In:
Systematic Botany, American Society of Plant Taxonomists, Vol. 45, No. 2 ( 2020-05-13), p. 349-360
Kurzfassung:
Abstract— We describe and illustrate Stenandrium diamantinense and Stenandrium eustachyum , two new species from campos rupestres in a region of high endemism in southeastern Brazil. Stenandrium diamantinense is differentiated
from other congeners by its unique indurate, small leaves with revolute margins. Stenandrium eustachyum is most similar to Stenandrium villosum , the only congener with which it shares the combination of oval bracts and caulescent habit; it can be distinguished from the
latter species by its ovate to widely ovate leaves (vs. lanceolate in S. villosum ). Stenandrium eustachyum differs from other species of Stenandrium from the Serra do Espinhaço by its oval (vs. linear in all other regional species) bracts. Photographs of
living plants in the field are supplemented by scanning electron micrographs of pollen, seeds, and trichomes. A distribution map and a key to the Stenandrium species of the southern Serra do Espinhaço are provided. S tenandrium diamantinens e is informally
and provisionally assessed as Endangered and S. eustachyum as Critically Endangered. The distribution of Stenandrium in the Serra do Espinhaço supports proposed centers of endemism and key biodiversity areas.
Materialart:
Online-Ressource
ISSN:
0363-6445
DOI:
10.1600/036364420X15862837791357
Sprache:
Englisch
Verlag:
American Society of Plant Taxonomists
Publikationsdatum:
2020
ZDB Id:
2052625-8
SSG:
12
