Zizka et al. 2013 (Article) Puya
Taxonomic revision of the Chilean Puya species (Puyoideae, Bromeliaceae), with special notes on the Puya alpestris - Puya berteroniana species complex
Author(s):—G. Zizka, K.S. Schulte & P. Novoa
Publication:—Brittonia 65(4): 387-407. (2013)
Abstract:—The Chilean Puya species (Puyoideae, Bromeliaceae) constitute an early diverging group within the genus and thus are key taxa for the understanding of the early evolution and biogeography of Puya. However, a modern taxonomic treatment including information from molecular phylogenetic studies is still lacking. Here, a taxonomic revision of the Chilean species of Puya is presented based on morphological, molecular, and biogeographic data. A re-evaluation of the widely applied concept of P. berteroniana led us to the conclusion that the type of P. berteroniana is of hybrid origin and is maintained as Puya × berteroniana. Our studies revealed that the name P. berteroniana has been widely misapplied to what in fact is the northern metapopulation of P. alpestris, which is here described as a new subspecies, Puya alpestris subsp. zoellneri, a member of subgenus Puya. A lectotype is designated for Puya copiapina and a neotype for P. chilensis. Altogether, six Puya species, two subspecies, four varieties and one hybrid taxon are recognized for the Chilean flora in this revision: P. alpestris subsp. alpestris and subsp. zoellneri; P. boliviensis; P. chilensis; P. gilmartiniae; P. coerulea var. coerulea, var. intermedia, var. monteroana, and var. violacea; P. venusta; and P. × berteroniana. A key is provided for their identification.
Keywords:—Bromeliaceae, Chile, hybrid, Puya, Puyopsis.
Published names (2):Puya alpestris subsp. zoellneri
Puya alpestris subsp. zoellneri x venusta
Taxonomy:—Puya alpestris subsp. zoellneri authors as (Mez) Zizka, J.V. Schneid. & Novoa, but without basionym (p.393).—Puya alpestris subsp. zoellneri x venusta (p.8119).—Puya berteroniana x = P. alpestris subsp. zoellneri x P. venusta In 2006, a plant could be observed at Pichidangui (Zizka 8119 [CONC, FR]) that appeared to be intermediate between P. alpestris subsp. zoellneri and P. venusta, both occurring sympatrically in the area. The Pichidangui plant resembled the type specimen of P. berteroniana in having an inflorescence similar to P. alpestris but lacking the sterile terminal parts; Interestingly, the further investigation of this specimen revealed it to be genetically intermediate between P. alpestris and the P. coerulea group (Schulte et al., 2010). Nonetheless, for P. coerulea does not occur in the area of Pichidangui, considering it as one of the parental species is not yet convincing. There has been some confusion about the correct epithet of P. berteroniana. Stuessy and Marticorena (1990) proposed to change the original name to P. berteroana. However, P. berteroniana is the correct spelling according to the ICBN (McNeill et al., 2007), art. 60.6., ex. 14. (p.399).—Puya boliviensis Type: Chile, Region III (Atacama): Morro de Caldera, 1888, W. Geisse s.n. (lectotype, here designated: SGO 46420). (p.365).—Puya chilensis Type: Description (herbarium and types of Molina unknown [Stafleu & Cowan, 1981]); Chile. Región VIII: Prov. Concepción, Los Perones, acantilado frente al mar, detrás del Cerro Teta Sur, 30 m s. m., 36° 45’S, 73°11’W, 20 Nov 1975, M. Quezada 174 (neotype, here designated: CONC 45034, two sheets; photocopy of CONC specimens: FR-5364, FR-5365). (p.396).—Puya paniculata Placed the taxon under synonymy of Puya coerulea var. intermedia (L.B. Sm. & Looser) L.B. Sm. & Looser, instead of var. violacea (p.402).—Puya quillotana Considered a synonym of Puya chilensis Molina .