TY - JOUR
T1 - Taxonomic revision of the Andean genus Xenophyllum (Compositae, Senecioneae)
AU - Calvo, Joel
AU - Moreira-Muñoz, Andres
N1 - Funding Information:
We are grateful to the curators and staff of the herbaria mentioned in the text. We would like to express our gratitude to the late Vicki Funk (US) for research support and for sharing worthy information and material that she compiled over a long period of time. Special thanks are also addressed to Carol Kelloff (US) for herbarium assistance, Alice Tangerini (US) for the nice illustrations, and Carlos Aedo (MA) for advice on taxonomic issues. We are indebted to Luvo Magoswana and to another anonymous reviewer for their insightful comments during the review process. The first author was a Short-Term Visitor Program Fellow at the Smithsonian Institution and was granted the Robinson Award of its Department of Botany. This work has been funded by FONDECYT from Chile by means of a postdoctoral fellowship to the first author (project N?3170270) and supported by the project N?1180211 of the second author.
Funding Information:
We are grateful to the curators and staff of the herbaria mentioned in the text. We would like to express our gratitude to the late Vicki Funk (US) for research support and for sharing worthy information and material that she compiled over a long period of time. Special thanks are also addressed to Carol Kelloff (US) for herbarium assistance, Alice Tangerini (US) for the nice illustrations, and Carlos Aedo (MA) for advice on taxonomic issues. We are indebted to Luvo Magoswana and to another anonymous reviewer for their insightful comments during the review process. The first author was a Short-Term Visitor Program Fellow at the Smithsonian Institution and was granted the Robinson Award of its Department of Botany. This work has been funded by FONDECYT from Chile by means of a postdoctoral fellowship to the first author (project N°3170270) and supported by the project N°1180211 of the second author.
Publisher Copyright:
Copyright Joel Calvo, Andres Moreira-Muñoz.
PY - 2020
Y1 - 2020
N2 - The Andean genus Xenophyllum (Compositae, Senecioneae) is distributed along the high-Andes from northeastern Colombia to northern Chile and northwestern Argentina, mainly thriving in the paramo and puna ecoregions. It comprises suffruticose plants forming dense mats, hummocks, or clumps of erect stems. They are characterized by displaying involucral bracts fused at the base, supplementary bracts absent, and mostly radiate capitula with white ray corollas, seldom yellow or pink (disciform in one species). Traditionally, Xenophyllum species were treated as members of the genus Werneria, a morphologically close genus that includes rosettiform or scapiform perennial herbs. As currently circumscribed, Xenophyllum mostly differs from Werneria in having elongate stems. Herein, the first modern and comprehensive revision of the genus recognizing twenty-two species and two subspecies is presented. Werneria decumbens is synonymized with X. weddellii, as well as X. fontii with X. humile and X. oscartovarii with X. dactylophyllum. Likewise, four varietal names and two sectional names are proposed as new synonyms. Seven names are lectotypified, the name X. sotarense is epitypified, W. decumbens neotypified, and the supraspecific name W. sect. Integrifoliae Rockh. is typified. The combination X. crassum subsp. orientale comb. nov. is made. Descriptions and distribution maps are provided for all accepted species, in addition to an identification key. Ten species are illustrated, three of them for the first time.
AB - The Andean genus Xenophyllum (Compositae, Senecioneae) is distributed along the high-Andes from northeastern Colombia to northern Chile and northwestern Argentina, mainly thriving in the paramo and puna ecoregions. It comprises suffruticose plants forming dense mats, hummocks, or clumps of erect stems. They are characterized by displaying involucral bracts fused at the base, supplementary bracts absent, and mostly radiate capitula with white ray corollas, seldom yellow or pink (disciform in one species). Traditionally, Xenophyllum species were treated as members of the genus Werneria, a morphologically close genus that includes rosettiform or scapiform perennial herbs. As currently circumscribed, Xenophyllum mostly differs from Werneria in having elongate stems. Herein, the first modern and comprehensive revision of the genus recognizing twenty-two species and two subspecies is presented. Werneria decumbens is synonymized with X. weddellii, as well as X. fontii with X. humile and X. oscartovarii with X. dactylophyllum. Likewise, four varietal names and two sectional names are proposed as new synonyms. Seven names are lectotypified, the name X. sotarense is epitypified, W. decumbens neotypified, and the supraspecific name W. sect. Integrifoliae Rockh. is typified. The combination X. crassum subsp. orientale comb. nov. is made. Descriptions and distribution maps are provided for all accepted species, in addition to an identification key. Ten species are illustrated, three of them for the first time.
KW - Andes
KW - Asteraceae
KW - Neotropics
KW - Werneria
KW - nomenclature
KW - taxonomy
KW - typification
UR - http://www.scopus.com/inward/record.url?scp=85096829827&partnerID=8YFLogxK
U2 - 10.3897/phytokeys.158.50848
DO - 10.3897/phytokeys.158.50848
M3 - Article
AN - SCOPUS:85096829827
VL - 158
SP - 1
EP - 106
JO - PhytoKeys
JF - PhytoKeys
SN - 1314-2011
ER -