Lectotypifications, neotypification, and nomenclatural observations for species of Hieracium subg. Chionoracium sect. Piloselliformia (Asteraceae: Cichorieae)

Abstract

As part of studies on South American Hieracium subg. Chionoracium, sect. Piloselliformia (Asteraceae: Cichorieae) in the present work are proposed four lectotypifications, one neotypification, and comments regarding previous nomenclatural decisions within the group.

Keywords:
compositae; South America; typification

Resumo

Como parte dos estudos sobre Hieracium subg. Chionoracium sect. Piloselliformia (Asteraceae: Cichorieae), no presente trabalho são propostas quatro lectotipificações e uma neotipificação, e atualizações sobre decisões nomenclaturais anteriores dentro do grupo.

Palavras-chave:
compositae; América do Sul; tipificação

Zahn (1922: 1093) established the section Piloselliformia within subgenus Chionoracium Sch.Bip (under subgenus Stenotheca) of Hieracium L. (Asteraceae: Cichorieae). This name was first used by Fries (1848: 134) to refer to some South and Central American species treated. Zahn (1922) included 13 species in this section from the Andes of South America and Patagonia, which were characterized by the following features: perennial herbs, mainly without stem leaves (or with only a few reduced leaves); basal leaves lanceolate, efloccose; capitula few-flowered; involucre lightly subglandular, pilose, floccose or glabrous; corollas barely longer than the involucre, with glabrous lobes; and cypsela with subturbinate base and truncate apex.

Sleumer (1936: 117) added a new species from Peru to this section, Hieracium infravillosulum Sleumer. Also, in his studies on the genus in Argentina (Sleumer 1956: 127), he included in the key to section Piloselliformia three additional species: Hieracium apoloensis Rusby and H. mapirense Britton from Bolivia, and H. fulvipes Wedd. from Argentina and Bolivia.

As part of studies on South American Hieracium, I herein present new lectotypes, a neotype, and some nomenclatural observations for section Piloselliformia.

Nomenclatural decisions for the names treated are based upon the analysis of protologues, related bibliography, herbarium material, and following the ICN (Turland et al. 2018). Type specimens and original materials lodged at herbaria BM, GH, K, LD, P. PH, S, US, WIS (Thiers continuosly updated) were studied from images on the JSTOR Global Plants data base (JSTOR 2021).

Four names are lectotypified. One name typified by Sleumer (1956: 131) is recognized here as a first-step lectotypification, which was followed by a further designation of Ariza Espinar & Cerana (2015: 37), now regarded as a second-step lectotypification. A neotype is also designated. Accepted names and synonyms are provided.

Hieracium austroamericanum Dahlst. Ark. Bot. 7(2): 51. 1907. TYPE: ARGENTINA. SANTA CRUZ, Lago Argentino, in campo, Jan. 1905, P. Dusén 5609 (first-step lectotype, selected by Sleumer 1956: 131: S; second step lectotype, selected by Ariza Espinar & Cerana 2015, 37: S [S-R-2881 digital image!]; isolectotype, S [S- 10-41317 digital image!] US [US00119688]). Accepted name: Hieracium patagonicum Hook. f.

According to the protologue of Hieracium austroamericanum, Dahlstedt (inDusén 1907: 51) based the description of this species on two syntypes collected by Dusén during his stay in southern South America. Both collections were made in the western portion of Santa Cruz province (Argentina): the first collection was made in Lago Argentino, while the second consists of a collection from Lago San Martín. Sleumer (1956: 131) referred to a Dusén collection (number 5609) at S as the lectotype of the name. However, two duplicates are found at S in agreement with the protologue, and both determined by Sleumer as ‘lectotypus’. Thus, Sleumer’s (1956) choice is here considered as a first-step lectotypification. Ariza Espinar & Cerana’s indication of the specimen S-R-2881 as the lectotype of name is here interpreted as a second-step lectotypification according to the ICN (Art. 9.17, Turland et al. 2018).

Hieracium fulvipes Wedd., Chlor. Andina 1(7): 224. 1857]. Pilosella fulvipes (Wedd.) F. W. Schultz & Sch. Bip., Flora 45: 436. 1862. TYPE: BOLIVIA, CHUQUISACA, Tomina, Dic 1845 - Jan. 1846, H. A. Weddell 3673bis (lectotype, selected by H. Sleumer [1956: 132], P, [P00707012 digital image!]). Accepted name.

The protologue of Hieracium fulvipes (Weddell 1857) includes a direct reference to a collection made by H. A. Weddell in Tomina, Bolivia but without collection number. Ariza Espinar & Cerana (2015: 28) referred to a specimen kept at P as the lectotype of the species name. This designation, however, is superfluous because Sleumer (1956: 132) implicitly lectotypified it when citing the “holotype” of the name at P (P00707012, Weddell 3673bis). Therefore, Sleumer’s use of holotype is an error to be corrected to lectotype.

Hieracium hieronymi Zahn, Pflanzenr. 4 (Heft 79): 1097. 1922. Replaced name: Hieracium ecuadoriense Hieron., Bot. Jahrb. Syst. 21: 376. 1896, nom illeg, non Arv. -Touv. (1881). TYPE: ECUADOR. Nono, in frustich steril, Aug. 1887, A. Sodiro 70-2 (neotype, selected here: P [P04026326, digital image!]). Accepted name.

In the description of this species, Hieronymus (1896) selected as type material a collection, Stübel 85a, made near Panecillo, Ecuador. According to Stafleu & Cowan (1979: 193), Hieronymus worked at B since 1892, thus, the type collection housed there was probably destroyed by the fire caused by the Allied bombing of Berlin-Dahlem in 1943 (Hiepko 1987), but a photograph of the destroyed B specimen from Berlin negatives (negative 16145) is available at F. Since all potential sources of original material have been checked, but nothing has been found, a neotype is here proposed (Art. 9.7 of the ICN) based on a specimen held at P (P04026326). The material selected is a specimen in agreement with the material studied and cited by Zahn (1922: 1097) when he published a replacement name for this taxon.

Hieracium infravillosulumSleumer, Repert. Spec. Nov. Regni Veg. 41: 117. 1936. TYPE: PERU. CUZCO, Quispicanchi. 15-16 Feb. 1929, A. Weberbauer 7779 (lectotype, selected here: US [US00119701 digital image!]). Accepted name.

In the protologue of Hieracium infravillosulum, Sleumer (1936) cited the collection Weberbauer 7779 from Peru, and he explicitly stated that the material he used to describe the species was studied at B (“Typus in Herb. Berolin.”). During the Second World War (Hiepko 1987), this sheet as many others housed at this herbarium were destroyed. One isotype of the collection made by Weberbauer, however, is housed at US (US00119701). Given that this specimen is in agreement with the protologue, it is here selected as lectotype of the species name.

Hieracium mapirenseBritton, Bull. Torrey Bot. Club 19: 371. 1892. TYPE: BOLIVIA. Mapiri, 10000 ft., H. H. Rusby 1694 (lectotype, selected here: NY [NY00180072 digital image!]; isolectotypes: BM [BM000799998 digital image!], GH [GH00009082 digital image!], K [K001097515 digital image!], NY [NY00180073 digital image!], P [P00707025 digital image!], PH [PH00014837 digital image!], S [S-R-2904, fragment, digital image!], US [US00119709 digital image!], WIS [WISv0256904WIS digital image!]). Accepted name.

Britton (1892) described Hieracium mapirense for Bolivia based on the collection Rusby 1694, but he did not provide a herbarium indication. According to Stafleu & Cowan (1976: 332), Britton´s herbarium and types are lodged at NY. In the collection at NY there are two specimens in agreement with the locality and the diagnosis in the protologue. Furthermore, nine duplicates of this gathering were found at BM, GH, K, NY, P, PH, S, US and WIS. In this context, the sheet at NY barcode NY00180072 that is the most complete plant and with Britton´s annotation on the main label is here selected as a lectotype of the name.

I would like to thank Pablo Moroni, Tod F. Stuessy, John McNeill and anonymous reviewers for valuable comments on the manuscript- Also to the Curators of the herbaria B, BR and G for their assistance about type specimens. This work was supported by the Consejo Nacional de Investigaciones Científicas y Técnicas, Argentina.

References

• Ariza Espinar L & Cerana MM (2015) Asteraceae: Subfamilia Cichorioidea. Tribu Lactuceae: Género Hieracium In: Zuloaga FO & Anton A (eds.) Flora argentina: flora vascular de la República Argentina. Vol. 7(2). Dicotyledoneae. Asteraceae: Cichorieae, Helenieae a Mutisieae. Estudio Sigma, Buenos Aires. Pp. 15-42.
• Britton NL (1892) An enumeration of the plants collected by Dr. H. H. Rusby in South America. Bulletin of the Torrey Botanical Club XXII 19: 371-374.
• Dusén P (1907) Neue und seltene Gefässpflanzen aus Ost- und Südpatagonien. Arkiv för Botanik 7: 1-62.
• Fries E (1848) Symbolae ad Historiam Hieraciorum. Vol. 14. Leffler et Sebell, Uppsala. 134p
• Hiepko P (1987) The collections of the Botanical Museum Berlin-Dahlem (B) and their history. Englera 7: 219-252.
• JSTOR (2021) Global plants. Available at <Available at https://plants.jstor.org >. Accessed on 01 July 2021.
  » https://plants.jstor.org
• Sleumer H (1936) Vermischte Diagnosen IV. Repertorium Specierum Novarum Regni Vegetabilis 41: 117-128.
• Sleumer H (1956) Die Hieracium Argentiniens unter Berücksichtigung der Nachbarländer. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 77: 85-148.
• Stafleu FA & Cowan RS (1976) Taxonomic literature: a selective guide to botanical publications and collections with dates, commentaries and types. Vol. 1. Bentham, Britton. Scheltema & Holkema, Utrecht, Bohn. DOI: <https://doi.org/10.5962/bhl.title.48631>
  » https://doi.org/https://doi.org/10.5962/bhl.title.48631
• Stafleu FA & Cowan RS (1979) Taxonomic literature: a selective guide to botanical publications and collections with dates, commentaries and types . Vol. 2. Hieronymus. Scheltema & Holkema, Utrecht, Bohn. DOI: <https://doi.org/10.5962/bhl.title.48631>
  » https://doi.org/https://doi.org/10.5962/bhl.title.48631
• Thiers B [continuously updated]. Index Herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available at <Available at http://sweetgum.nybg.org/science/ih/ >. Accessed on January 2022.
  » http://sweetgum.nybg.org/science/ih/
• Turland NJ, Wiersema JH, Barrie FR, Greuter W, Hawsworth DL, Herendeen PS, Knapp S, Kusber W-H, Li D-Z, Marhold K, May TW, McNeill J, Monro AM, Prado J, Price MJ & Smith GF (eds.) (2018) International code of nomenclature for algae, fungi, and plants (Shenzhen Code). Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten. DOI: <https://doi.org/10.12705/Code.2018>
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• Weddell HA (1857) Chloris Andina. Essai d'une Flore de la Région Alpine des Cordilleres de l'Amerique du Sud. Vol. 1(7). P. Bertrand, Paris. Pp. 185-232.
• Zahn KH (1922) Compositae-Hieracium: Subgenus Stenotheca In: Engler A (ed.) Das Pflanzenreich 4: 1075-1142.

Edited by

Area Editor: Dr. Luiz Menini Neto

Data availability

Data citations

JSTOR (2021) Global plants. Available at <Available at https://plants.jstor.org >. Accessed on 01 July 2021.

Thiers B [continuously updated]. Index Herbariorum: a global directory of public herbaria and associated staff. New York Botanical Garden’s Virtual Herbarium. Available at <Available at http://sweetgum.nybg.org/science/ih/ >. Accessed on January 2022.

Publication Dates

• Publication in this collection
  06 Jan 2023
• Date of issue
  2022

History

• Received
  07 Mar 2022
• Accepted
  22 June 2022