TY - JOUR
T1 - The taxonomic status of the Mexican oak Quercus undata (Fagaceae, Quercus, Section Quercus)
AU - Bacon, Jeffrey R.
AU - Dávila-Aranda, Patricia Dolores
AU - Spellenberg, Richard
AU - Socorro González-Elizondo, M.
PY - 2011/12
Y1 - 2011/12
N2 - Quercus undata Trel. (Fagaceae, Quercus, Section Quercus) has a complex taxonomic and nomenclatural history. Intensive sampling of oaks at the type locality of Q. undata Trel. in Durango, Mexico and evaluation of herbarium specimens and plants in the field indicate that Q. undata represents variation in Quercus chihuahuensis Trel. in white oak communities where introgressive hybridization among Q. chihuahuensis, Q. grisea Liebm., and a third white oak, Q. arizonica Sarg. made species identification difficult. Endlich's type specimen of Q. undata, as designated by Trelease, was apparently destroyed in bombing raids on Berlin during World War II, and we propose herein as lectotype the Trelease illustration of the type. An epitype is also designated in support of the lectotype, given that some features cannot be critically observed on the illustration. The long peduncles of the specimen illustrated by Trelease indicate a close relation to Q. chihuahuensis.
AB - Quercus undata Trel. (Fagaceae, Quercus, Section Quercus) has a complex taxonomic and nomenclatural history. Intensive sampling of oaks at the type locality of Q. undata Trel. in Durango, Mexico and evaluation of herbarium specimens and plants in the field indicate that Q. undata represents variation in Quercus chihuahuensis Trel. in white oak communities where introgressive hybridization among Q. chihuahuensis, Q. grisea Liebm., and a third white oak, Q. arizonica Sarg. made species identification difficult. Endlich's type specimen of Q. undata, as designated by Trelease, was apparently destroyed in bombing raids on Berlin during World War II, and we propose herein as lectotype the Trelease illustration of the type. An epitype is also designated in support of the lectotype, given that some features cannot be critically observed on the illustration. The long peduncles of the specimen illustrated by Trelease indicate a close relation to Q. chihuahuensis.
KW - Epitype
KW - Introgressive hybridization
KW - Lectotype
KW - Mexico
KW - Sierra Madre Occidental
UR - http://www.scopus.com/inward/record.url?scp=84855217154&partnerID=8YFLogxK
U2 - 10.22201/ib.20078706e.2011.4.691
DO - 10.22201/ib.20078706e.2011.4.691
M3 - Artículo
SN - 1870-3453
VL - 82
SP - 1123
EP - 1131
JO - Revista Mexicana de Biodiversidad
JF - Revista Mexicana de Biodiversidad
IS - 4
ER -