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Philcoxia cachimboensis (Plantaginaceae): a new carnivorous species from Serra do Cachimbo, eastern Amazon, Brazil

Philcoxia cachimboensis (Plantaginaceae): uma nova espécie carnívora da Serra do Cachimbo, Amazônia oriental, Brasil

ABSTRACT

A new species of Philcoxia (Plantaginaceae) from Serra do Cachimbo, eastern Amazon, Brazil, is described and discussed. Philcoxia cachimboensis sp. nov. is mainly characterized by the corolla with asymmetrically obovate (liver-shaped) lateral lobes, with truncate to sub-emarginate apex. This is the first record of the genus in the Brazilian Amazon. A morphological description, illustration and photographs, conservation status assessment, an updated identification key for the recognized species of Philcoxia, and comparative taxonomic comments are provided.

KEYWORDS:
Botany; conservation; ecotone; taxonomy; white-sand vegetation

RESUMO

Uma nova espécie de Philcoxia (Plantaginaceae) da Serra do Cachimbo (Amazônia oriental, Brasil) é aqui descrita e discutida. Philcoxia cachimboensis sp. nov. é caracterizada pela corola com lobos laterais assimétricamente obovados (em formato de fígado), com ápice truncado a sub-emarginado. Esse é o primeiro registro do gênero para a Amazônia brasileira. Uma descrição morfológica, ilustrações e fotografias, avaliação do status de conservação, uma chave de identificação atualizada com as espécies de Philcoxia reconhecidas, e comentários taxonômicos comparativos são fornecidos.

PALAVRAS-CHAVE:
Botânica; conservação; ecótono; taxonomia; vegetação de areia branca

INTRODUCTION

Philcoxia P. Taylor & V.C. Souza is a genus of Plantaginaceae endemic to Brazil (Taylor et al. 2000Taylor, P.; Souza, V.C.; Giulietti, A.M.; Harley, R.M. 2000. A new species of Scrophulariaceae with three new species from Eastern Brazil. Kew Bulletin 55: 155-163.). All seven species recognized are carnivorous and grow on sandy soils, where their highly specialized leaves, disposed below the surface, trap and digest tiny nematodes (Taylor et al. 2000; Pereira et al. 2012Pereira, C.G.; Almenara, D.P.; Winter, C.E.; Fritsch, P.W.; Lambers, H.; Oliveira, R.S. 2012. Underground leaves of Philcoxia trap and digest nematodes. Proceedings of the National Academy of Sciences of the United States of America 109: 1154-1158.; Carvalho and Queiroz 2014Carvalho, M.L.S.; Queiroz, L.P. 2014. Philcoxia tuberosa (Plantaginaceae), a new species from Bahia, Brazil. Neodiversity 7: 14-20.; Scatigna et al. 2015Scatigna, A.V., Souza, V.C.; Pereira, C.G.; Sartori, M.A.; Simões, A.O. 2015. Philcoxia rhizomatosa (Gratioleae, Plantaginaceae): a new carnivorous species from Minas Gerais, Brazil. Phytotaxa 226: 275-280.; Scatigna et al. 2017Scatigna, A.V.; Silva, N.G.; Alves, R.J.V.; Souza, V.C.; Simões, A.O. 2017. Two new species of the carnivorous genus Philcoxia (Plantaginaceae) from the Brazilian Cerrado. Systematic Botany 42: 351-357.).

The genus was described based on three plants from open sandy areas in rupestrian grasslands (campos rupestres) of the Brazilian states of Bahia (Philcoxia bahiensis V.C. Souza & Harley), Goiás (Philcoxia goiasensis P. Taylor), and Minas Gerais (Philcoxia minensis V.C. Souza & Giulietti) (Taylor et al. 2000Taylor, P.; Souza, V.C.; Giulietti, A.M.; Harley, R.M. 2000. A new species of Scrophulariaceae with three new species from Eastern Brazil. Kew Bulletin 55: 155-163.). They were originally described as belonging to Scrophulariaceae, based on morphological features, and later assigned to Plantaginaceae, based on molecular data (Fritsch et al. 2007Fritsch, P.W.; Almeda, F.; Martins, A.B.; Cruz, B.C.; Estes, E. 2007. Rediscovery and Phylogenetic Placement of Philcoxia minensis (Plantaginaceae), with a Test of Carnivory. Proceedings of the California Academy of Sciences 58: 447-467.), a placement corroborated by Scatigna et al. (2018Scatigna, A.V.; Fritsch, P.W.; Souza, V.C.; Simões, A.O. 2018. Phylogenetic relationships and morphological evolution in the carnivorous genus Philcoxia (Plantaginaceae, Gratioleae). Systematic Botany 43: 910-919.).

In the last decade, P. goiasensis and P. minensis, which were previously known only from their type-locality, were recorded, respectively, in two new localities in the state of Goiás, and as a new population in Minas Gerais, increasing their distribution range (Scatigna et al. 2016Scatigna, A.V.; Amaral, A.G.; Munhoz, C.B.R.; Souza, V.C.; Simões, A.O. 2016a. The rediscovery of Philcoxia goiasensis (Plantaginaceae): lectotypification and notes on morphology, distribution and conservation of a threatened carnivorous species from the Serra Geral de Goiás, Brazil. Kew Bulletin 71: 1-7.a; Scatigna et al. 2016bScatigna, A.V.; Carmo, J.A.M.; Simões, A.O. 2016b. New records of Philcoxia minensis (Plantaginaceae) and Mitracarpus pusillus (Rubiaceae): conservation status assessment and notes on type specimens of two threatened species from the Espinhaço Range, Minas Gerais, Brazil. Phytotaxa 243: 297-300.). Also, four new species were described [Philcoxia tuberosa M.L.S. Carvalho & L.P. Queiroz (Carvalho and Queiroz 2014Carvalho, M.L.S.; Queiroz, L.P. 2014. Philcoxia tuberosa (Plantaginaceae), a new species from Bahia, Brazil. Neodiversity 7: 14-20.), Philcoxia rhizomatosa Scatigna & V.C. Souza (Scatigna et al. 2015), Philcoxia courensis Scatigna and Philcoxia maranhensis Scatigna (Scatigna et al. 2017)], all registered in white-sand patches in the semi-arid Caatinga and savanna Cerrado biomes. Despite the occurrence of areas of open, white-sand vegetation in the Amazon (Adeney et al. 2016Adeney, J.M.; Christensen, N.L.; Vicentini, A.; Cohn-Haf, M. 2016. White-sand Ecosystems in Amazonia. Biotropica 48: 7-23.), no records of Philcoxia existed so far in this biome.

Recently, efforts of botanical collection in the mountainous range of Serra do Cachimbo (eastern Amazon, Brazil) added more information on the flora of the region, with several records of species previously not cited for the region, including two new species of woody bamboos (Poaceae) (Lopes-Neto and Viana 2022Lopes-Neto, R.B.; Viana, P.L. 2022. Flora of the Serra do Cachimbo (Eastern Amazon, Brazil): Bambusoideae (Poaceae), including the description of two new species. Phytotaxa 550: 99-129. ), and a new species of Philcoxia (Plantaginaceae), which is here described, illustrated and discussed.

MATERIAL AND METHODS

The description of the new species is based on the analysis of herbarium material collected in 2005 and specimens collected during an expedition in 2021 in Serra do Cachimbo. This region is a mountainous range with an elevation between 300 and 700 m located on the limits of the states of Mato Grosso (MT) and Pará (PA), Brazil. It is an ecotone area between the Amazon and Cerrado biomes, and the predominant soil is composed of whitish quartzite sands (RADAMBRASIL 1980RADAMBRASIL. 1980. Folha Juruena SC.21: Geologia, geomorfologia, solos, vegetação e uso potencial da terra. DNPM/MME Projeto RADAMBRASIL, Rio de Janeiro, 464p.).

The collection expedition was conducted in two protected areas located in the portion of Serra do Cachimbo located in Pará: Campo de Provas Brigadeiro Velloso (CPBV, a base camp of the Brazilian Air Force) and Reserva Biológica Nascentes da Serra do Cachimbo (Nascentes da Serra do Cachimbo Biological Reserve). For a detailed location of the study area, see Lopes-Neto and Viana (2022Lopes-Neto, R.B.; Viana, P.L. 2022. Flora of the Serra do Cachimbo (Eastern Amazon, Brazil): Bambusoideae (Poaceae), including the description of two new species. Phytotaxa 550: 99-129. ). The habitat of the new species was classified using RADAMBRASIL (1980)RADAMBRASIL. 1980. Folha Juruena SC.21: Geologia, geomorfologia, solos, vegetação e uso potencial da terra. DNPM/MME Projeto RADAMBRASIL, Rio de Janeiro, 464p. and Lopes-Neto and Viana (2022).

The terminology of the morphological description follows Taylor et al. (2000Taylor, P.; Souza, V.C.; Giulietti, A.M.; Harley, R.M. 2000. A new species of Scrophulariaceae with three new species from Eastern Brazil. Kew Bulletin 55: 155-163.). The distinction between petioles and stems is difficult in species of Philcoxia that present rhizomes (Fritsch et al. 2007Fritsch, P.W.; Almeda, F.; Martins, A.B.; Cruz, B.C.; Estes, E. 2007. Rediscovery and Phylogenetic Placement of Philcoxia minensis (Plantaginaceae), with a Test of Carnivory. Proceedings of the California Academy of Sciences 58: 447-467.; Scatigna et al. 2015Scatigna, A.V., Souza, V.C.; Pereira, C.G.; Sartori, M.A.; Simões, A.O. 2015. Philcoxia rhizomatosa (Gratioleae, Plantaginaceae): a new carnivorous species from Minas Gerais, Brazil. Phytotaxa 226: 275-280.), therefore, in our measure estimates, we considered petioles to be the segment of horizontal, wiry and delicate structure between the last branching point and the insertion to the leaf blade. The conservation status was assessed following the guidelines of the IUCN Red List Categories and Criteria (2012)IUCN. 2012. IUCN Red List Categories and Criteria : Version 3.1. 2nd ed. IUCN, Gland, 32p..

The distribution map was produced with the QGIS v3.18.2-Zürich program (QGIS Development Team 2009QGIS Development Team. 2009. QGIS Geographic Information System. Open-Source Geospatial Foundation. ( (http://qgis. org/ ). Accessed on 28 May 2023.
http://qgis. org/...
) using species occurrence data compiled from the Specieslink database (https://specieslink.net/). The specific identity of the Specieslink records was verified using the photographs of the specimens available on the website and the aforementioned literature on the genus. The specimens that could not be confirmed as Philcoxia were excluded and the specimens used to compose the distribution map are listed in the Supplementary Material, Table S1.

RESULTS

Philcoxia cachimboensis Scatigna & Lopes-Neto sp. nov. (Figures 1 - 3).

Figure 1
Philcoxia cachimboensis sp. nov.: A - habit; B - detail of the corm-like stems and peltate leaves; C - leaf in abaxial view (left) and adaxial view (right), with adherent sand grains and nematodes; D - detail of inflorescence with indument sparsely glandular-pubescent and triangular bract subtending the pedicel; E - flower in lateral view; F - corolla in front view; G - artificially opened corolla; H - gynoecium in front view (left) and lateral view (right); I - capsule in lateral view; J - seed. Credit: Klei Sousa, based on the isotype Lopes-Neto et al. 666 (UEC).

Figure 2
Philcoxia cachimboensis sp. nov.: A - Habitat; B - Population in natural habitat; C - Habit, showing the leaves below; D - Inflorescence with a lilac flower in lateral view (left) and an immature fruit (right); E - Detail of the flower, lateral view; F - White flower in frontal view, showing lower lib bilobate; G - Inflorescence with white flowers in lateral view (left) and frontal view (right); H - Detail of lilac flower in frontal view, showing lower lip trilobate. Photos by Pedro Lage Viana. This figure is in color in the electronic version.

Figure 3
Geographic distribution of Philcoxia cachimboensis sp. nov. and all known other species of Philcoxia.

Type material: Brazil. Pará. Novo Progresso, Serra do Cachimbo, Campo de Provas Brigadeiro Velloso, BR-163, entrada por área de savana a 73 km a sul do Distrito de Cachoeira da Serra, 09°11’01”S, 54°54’17”W, 560 m, 24.v.2021 (fl., fr.), R.B. Lopes-Neto, P.L. Viana, A.S.B. Gil and J.B. Cardoso 666 (holotype: MG244553!; isotypes: SLUI8655!, UEC211926!).

Diagnosis: Philcoxia cachimboensis sp. nov. is characterized by the unique asymmetrically obovate (liver-shaped) lateral corolla lobes. It is similar to P. minensis in the presence of slender horizontal rhizomes that give rise to new upright stems, but differs from it in the presence of corm-like, root-borne buds (vs. absence in P. minensis), pedicel trichomes ca. 0.25 mm, composed of a multicellular, uniseriate stipe and unicellular head (vs. ca. 0.07 mm long, composed of a unicellular stipe and pluricellular head, in P. minensis), sepals ca. 1 mm long, sparsely glandular-pubescent (vs. sepals ca. 0.5 mm long, glabrous to sparsely glandular-puberulent in P. minensis), and in the stigma with clearly unequal lobes (vs. equal lobes in P. minensis).

Description: Perennial herbs, 7-19 cm tall. Tap root up to 3 cm long, vertical, frequently with slender secondary roots, slightly sinuous and contorted, bearing 0-2(-3) globose root-borne buds. Rhizomes horizontal, white to reddish in vivo, slender, emerging from the upright stem, unbranched or rarely branched, frequently giving rise to a new upright stem, nodes inconspicuous. Upright stems globose to cylindrical, corm-like, 2.5-4.5 × 1.5-1.9 mm, sometimes short-branched, then branches ascending. Leaves not arranged in a rosette, frequently peltate, underground; petioles 1.5-29.5 mm long, emerging from the upright stems or from petiole-like rhizomes, subterranean; blade suborbicular when peltate to cordiform, 0.7-2.1 mm diam., adaxial surface glandular-pubescent, abaxial surface glabrous, margin entire, revolute, usually covered by a thin layer of sand. Inflorescences green in vivo, simple or branched, 7-19 cm long, ascending to erect, sparsely glandular-pubescent, trichomes composed of a multicellular, uniseriate stipe and unicellular head, ca. 0.25 mm long; pedicels green in vivo, 0.8-3 cm long, shortening towards the apex of the inflorescence, sparsely glandular-pubescent, trichomes same as in inflorescence; bracts triangular, conduplicate, patent, ca. 0.4 mm long, basifixed, persistent, glabrous, enclosing an axillary bud that may develop into a secondary inflorescence axis. Flowers solitary, resupinate; sepals lanceolate, subequal, ca. 1 mm long, sparsely glandular-pubescent, with trichomes same as in inflorescences; corolla bilabiate, pale lilac to lilac with darker veins, rarely white, in vivo, tube infundibuliform, abruptly widened towards the throat, slightly inflated at base, ca. 3.5-3.9 mm long, externally glabrous, internally glandular-puberulent at middle length, glandular pubescent around filaments insertion, yellow at middle length in vivo; throat internally sparsely glandular-pubescent, white to lilac in vivo; lower lip. ca. 3.1 mm long, usually bilobed, lobes oblong, ca. 1.5 × 1 mm, apex sub emarginate to round, sometimes a third, smaller, central triangular lobe is present, ca. 1 mm long, upper lip trilobed, central lobe broadly obovate, ca. 2 × 2.5 mm, apex truncate, lateral lobes asymmetrically obovate (liver-shaped), ca. 2 × 2 mm, apex truncate to sub-emarginate. Stamens 2, adaxial, inserted on corolla tube, included, filaments curved, glabrous. Ovary superior, carpels 2, syncarpous, 2-locular, ovoid, ca. 0.8 × 0.3 mm; placentation axillary, ovules numerous; style terminal, solitary, caducous, base filiform, ca. 1.5 mm long, apex obdeltoid, strongly upcurved, ca. 0.6 mm long; stigma bilobed, clearly unequal lobes, the upper lobe larger. Capsule globose, ca. 2 mm diam, 4-valvate. Seeds trigone, ca. 0.3 × 0.3 mm, black, glossy, reticulate-foveolate.

Additional specimen examined: Brazil. Pará, Altamira, Serra do Cachimbo, xii.2005 (fl), M. Sobral and A.G. Oliveira 10646 (ESA154280!).

Distribution and habitat: This species is known from two collection sites in Serra do Cachimbo, Pará state, Brazil, in the municipalities of Altamira and Novo Progresso (CPBV). It was found on sandy soil in grassland vegetation (campo limpo). Philcoxia cachimboensis is the first species of the genus to be recorded in Pará, expanding its occurrence to the Brazilian Amazon (Figure 3).

Phenology: The species was collected with flowers and fruits in May and December.

Etymology: The epithet refers to the type-locality, Serra do Cachimbo.

Conservation status: According to the IUCN Red List Categories and Criteria (2012)IUCN. 2012. IUCN Red List Categories and Criteria : Version 3.1. 2nd ed. IUCN, Gland, 32p., P. cachimboensis sp. nov. should be listed as Data Deficient (DD), because appropriate distribution data of the species are currently lacking. Despite its known occurrence in two distinct municipalities in Serra do Cachimbo (Altamira and Novo Progresso, Pará state, Brazil), the specimen from Altamira [Sobral and Oliveira 10646 (ESA)] does not have geographical location coordinates, preventing the calculation of area of occupation and extent of occurrence.

A specimen of Philcoxia was listed in the floristic checklist in the management plan of REBIONSC (ICMBIO 2009ICMBIO. 2009. Plano de Manejo da Reserva Biológica Nascentes da Serra do Cachimbo. Ministério do Meio Ambiente, Instituto Chico Mendes de Conservação da Biodiversidade, Brasília, 332p. ( (https://www.gov.br/icmbio/pt-br/assuntos/biodiversidade/unidade-de-conservacao/unidades-de-biomas/amazonia/lista-de-ucs/rebio-dnascentes-da-serra-do-cachimbo/arquivos/rebio_nascentes_da_serra_do_cachimbo.pdf ). Accessed on 27 Oct 2023.
https://www.gov.br/icmbio/pt-br/assuntos...
), but without a voucher designation. REBIONSC is located east of the BR-163 highway, and covers the municipalities of Altamira and Novo Progresso. We have not been able to verify whether the specimen listed in the management plan corresponds to the voucher of Sobral and Oliveira 10646 (see additional material examined) or another voucher. Therefore, new expeditions are needed in both CPBV and REBIONSC to expand the knowledge regarding the distribution of the species in white sand vegetation in the Serra do Cachimbo and adjacent areas to properly estimate its conservation status.

Updated identification key for the species of Philcoxia (adapted from Scatigna et al. 2017Scatigna, A.V.; Silva, N.G.; Alves, R.J.V.; Souza, V.C.; Simões, A.O. 2017. Two new species of the carnivorous genus Philcoxia (Plantaginaceae) from the Brazilian Cerrado. Systematic Botany 42: 351-357. )

1. Rhizomes absent; leaves organized in a rosette ...............2

1’. Rhizomes present, horizontal; leaves not organized in a rosette ................................................................................5

2. Stem reduced, inconspicuous; root-borne buds slender .....3

2’. Stem globose to cylindrical, conspicuous; root-borne buds globose ..............................................................................4

3. Leaf blade cordiform to reniform, never peltate; bracts glandular-pubescent; corolla lower lip slightly bilobed ...................................................................Philcoxia maranhensis

3’. Leaf blade orbicular to reniform, usually peltate; bracts glabrous; corolla lower lip deeply bilobed .........................................................................................Philcoxia goiasensis

4. Corolla with veins strongly marked; bracts glandular-pubescent, 1.0-1.5 mm long; sepals 1.5-2.0 mm long ....................................................................... Philcoxia bahiensis

4’. Corolla with veins weakly marked; bracts glabrous, 0.5-0.7 mm long; sepals up to 1.3 mm long .........Philcoxia courensis

5. Rhizomes yellowish in vivo, thickened, nodes conspicuous; leaf blades 2-7 mm diam.; inflorescences, pedicel and calyx entirely glabrous .................................Philcoxia rhizomatosa

5’. Rhizomes white to reddish in vivo, slender, nodes inconspicuous; leaf blades 0.7-2.1(-2.5) mm diam.; inflorescences, pedicel and/or calyx glandular-pubescent .......6

6. Underground tubers present; corolla tube dark purple in vivo ...........................................................Philcoxia tuberosa

6’. Underground tubers absent; corolla tube lilac or yellowish in vivo ................................................................................7

7. Corm-like root-borne buds absent; calyx glabrous to sparsely glandular-puberulent; corolla with symmetrical obovate lateral lobes; stigma with equal lobes .....................Philcoxia minensis

7’. Corm-like root-borne buds present; calyx sparsely glandular-pubescent; corolla with asymmetrical obovate lateral lobes (liver-shaped); stigma with clearly unequal lobes …. ……………..…………..Philcoxia cachimboensis sp. nov.

DISCUSSION

Philcoxia cachimboensissp. nov. is the only species of the genus to possess a corolla with asymmetrically obovate (liver-shaped) lateral lobes of approximately 2 × 2 mm and truncate to sub-emarginate apex (Figure 1, f, g. Figure 3, f, g, h). The new species features slender horizontal rhizomes that give rise to new upright stems, resembling P. minensis. However, P. minensis can be distinguished by the absence of root-borne buds (vs. corm-like root-borne buds in P. cachimboensis sp. nov.), the pedicel trichomes are approximately 0.07 mm long, composed of a unicellular stipe and pluricellular head (vs. pedicel trichomes approximately 0.25 mm long, composed of a multicellular, uniseriate stipe and unicellular head in P. cachimboensis sp. nov.), the sepals about 0.5 mm long, glabrous to sparsely glandular-puberulent (vs. sepals about 1 mm long, sparsely glandular-pubescent in P. cachimboensis sp. nov.), and stigma with equal lobes (vs. stigma with unequal lobes in P. cachimboensis sp. nov.). We only analyzed the structure of trichomes in the inflorescence of these two species, because they are the morphologically closest species in the genus, but it is likely that this character may be useful to identify other species of the genus. Philcoxia tuberosa also exhibits slender rhizomes, but is easily recognized by the unique presence of underground tubers, while P. rhizomatosa has thickened rhizomes and conspicuous nodes (vs. slender rhizomes and inconspicuous nodes in P. cachimboensis sp. nov.) (Table 1). Although P. bahiensis and P. courensis may present well-developed underground stems, these are usually condensed and in an upright position (Scatigna et al. 2017Scatigna, A.V.; Silva, N.G.; Alves, R.J.V.; Souza, V.C.; Simões, A.O. 2017. Two new species of the carnivorous genus Philcoxia (Plantaginaceae) from the Brazilian Cerrado. Systematic Botany 42: 351-357., pers. obs.), in contrast to the rhizomes of P. cachimboensis sp. nov., which are generally filamentous and horizontal (Table 1). The complex underground structure of Philcoxia has been used as an important diagnostic character (Scatigna et al. 2017), but anatomical and morphological studies are still required to better understand the true nature of the rhizomes as interpreted by Scatigna et al. (2018).

Table 1
Main diagnostic characters of Philcoxia cachimboensis sp. nov. and other Philcoxia species with rhizomes (adapted from Carvalho and Queiroz 2014Carvalho, M.L.S.; Queiroz, L.P. 2014. Philcoxia tuberosa (Plantaginaceae), a new species from Bahia, Brazil. Neodiversity 7: 14-20.; Scatigna et al. 2015Scatigna, A.V., Souza, V.C.; Pereira, C.G.; Sartori, M.A.; Simões, A.O. 2015. Philcoxia rhizomatosa (Gratioleae, Plantaginaceae): a new carnivorous species from Minas Gerais, Brazil. Phytotaxa 226: 275-280.; Scatigna et al. 2016b).

CONCLUSIONS

The new species described here, Philcoxia cachimboensis sp. nov. is the first of its genus to be recorded in the Brazilian Amazon. The estimated conservation status of the new species according to IUCN criteria is Data Deficient (DD) due to its being known only from two localities in Serra do Cachimbo, Pará state, Brazil.

ACKNOWLEDGMENTS

This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001. AVS thanks the Fundação de Amparo à Pesquisa e ao Desenvolvimento Científico e Tecnológico do Maranhão (FAPEMA; code PDCTR-00123/20) and the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq; code 301691/2021-5) for the research fellowship. The Fundação Amazônia Paraense de Amparo à Pesquisa (FAPESPA) financed the projects “Bamboos (Poaceae: Bambusoideae) in the Brazilian Amazon: state of knowledge, taxonomy and conservation” (ICAAF 016/2018) and “Cyperaceae Juss. from the state of Pará: increment of collections, taxonomy and conservation” (CAPES/FAPESPA No. 006/2015), which allowed the collection expedition. The CPBV authorized the collections in its area and helped with logistical support. We also are thankful to Dr. Vinicius C. Souza (ESA) and the curatorial staff of UEC for allowing access to the specimens, Pedro Viana for the field photographs and Klei Sousa for the illustration. RBLN thanks Caroline Oliveira Andrino, Juliene de Fátima Maciel da Silva and Rafael Barbosa Gomes da Silva for their suggestions. Finally, we would like to thank the reviewers for their contributions to the manuscript.

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  • Scatigna, A.V.; Carmo, J.A.M.; Simões, A.O. 2016b. New records of Philcoxia minensis (Plantaginaceae) and Mitracarpus pusillus (Rubiaceae): conservation status assessment and notes on type specimens of two threatened species from the Espinhaço Range, Minas Gerais, Brazil. Phytotaxa 243: 297-300.
  • Scatigna, A.V.; Fritsch, P.W.; Souza, V.C.; Simões, A.O. 2018. Phylogenetic relationships and morphological evolution in the carnivorous genus Philcoxia (Plantaginaceae, Gratioleae). Systematic Botany 43: 910-919.
  • Scatigna, A.V.; Silva, N.G.; Alves, R.J.V.; Souza, V.C.; Simões, A.O. 2017. Two new species of the carnivorous genus Philcoxia (Plantaginaceae) from the Brazilian Cerrado. Systematic Botany 42: 351-357.
  • Scatigna, A.V., Souza, V.C.; Pereira, C.G.; Sartori, M.A.; Simões, A.O. 2015. Philcoxia rhizomatosa (Gratioleae, Plantaginaceae): a new carnivorous species from Minas Gerais, Brazil. Phytotaxa 226: 275-280.
  • Taylor, P.; Souza, V.C.; Giulietti, A.M.; Harley, R.M. 2000. A new species of Scrophulariaceae with three new species from Eastern Brazil. Kew Bulletin 55: 155-163.
  • CITE AS:

    Lopes-Neto, R.B.; Cardoso, J.B.; Scatigna, A.V. 2024. Philcoxia cachimboensis (Plantaginaceae): a new carnivorous species from Serra do Cachimbo, eastern Amazon, Brazil. Acta Amazonica 54: e54bc23171.

Data availability

The data that support the findings of this study were published in this article.

SUPPLEMENTARY MATERIAL

Lopes-Neto et al. Philcoxia cachimboensis (Plantaginaceae): a new carnivorous species from Serra do Cachimbo, eastern Amazon, Brazil

Table S1
List of specimens of Philcoxia used in the preparation of the distribution map. Datum: SIRGAS 2000.

Edited by

ASSOCIATE EDITOR:

Ricarda Riina

Publication Dates

  • Publication in this collection
    18 Mar 2024
  • Date of issue
    Apr-Jun 2024

History

  • Received
    01 June 2023
  • Accepted
    23 Oct 2023
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