absent; inflorescence 2.5 - 7.0 (9.5) cm long, axillary to leaves or to small deciduous bracts, 
cymose-paniculate, conspicuosly villous to glabrescent, flower pedicel (3.0) 4.5 - 7.5 (9.0) mm 
long, sparsely villous or glabrous; flowers 2.2 - 2.7 mm long, urceolate, greenish yellow, tepals 
1.6 - 2.4 mm long, and 1.5 - 2.1 mm wide, ovate to widely ovate, sparsely villous to glabrous 
outside, sericeous inside, stamens of whorls I & II 1.1 - 1.9 mm long, their filaments villous or 
glabrous adaxially, villous abaxially, anthers glabrous except on connective base abaxially, 
stamens of whorl III 1.2 - 1.8 mm long, their filaments densely sericeous abaxially on the base, 
densely to sparsely sericeous adaxially, anthers glabrous except on connective and base of lower 
sporangia adaxially, sporangia four in all stamens, glands ca. 0.5 mm long, elliptic or rounded, 
staminodes 0.7 - 1.3 mm long, their filaments densely sericeous, apex dense to sparsely sericeous 
abaxially, hypanthium 0.4 - 0.5 mm deep, sparsely villous to glabrous outside, sericeous inside, 
sometimes only partially pubescent or almost glabrous, reddish hairs usually present inside, 
ovary and style glabrous; fruit 9.5 - 14.0 mm long, and 9.0 - 11.5 mm wide, rounded or ellipsoid, 
seated on the persistent tepals, pedicel turbinate, reddish. 
C. salicifolium is a common species in the inland slopes in central eastern Sierra Madre in 
Mexico, in places with limestone outcrops where oak and pine forests grow. Sometimes it is 
found in wetter sites, like those with oak-pine mixed deciduous forest. It is known from places 
between 1000 - 1900 m of altitude. Flowers are produced from March to June, and mature fruits 
from August to November. 
Type material available of C. salicifolium for study was scarce and fragmentary. 
However, even in the fragment filed at F, the typical appressed sericeous hairs on the leaf 
155 
