Monographs Details: Roupala brachybotrys subsp. cartilaginea (Cornejo & Bonifaz) Prance
Authority: Prance, Ghillean T., et al. 2007. Proteaceae. Fl. Neotrop. Monogr. 100: 1-218. (Published by NYBG Press)
Synonyms:Roupala brachybotrys subsp. cartilaginea (Cornejo & Bonifaz) Prance
Description:Subspecies Description - Lenticels inconspicuous. Leaves thick-cartilaginous. Petioles 3-5(-9) mm long. Tepals 8.5-10.5 mm. Inflorescences 6-11 mm long, overtopping leaves, the indumentum shortly puberulous to velutinous.

Discussion:The authors of this variety have been unable to find further material at the type locality, so this remains a poorly known but apparently distinct taxon.

The inflorescences are much more robust than in var. brachybotrys.

Roupala brachybotrys has very close affinities with R. montana var. montana and is found in the same localities but at higher altitudes. It clearly has a different habit, recognized by the narrower, more erect branches which are densely clustered together, and by the differently shaped leaves, usually broader towards the apex than the base and acute to rounded at the apex instead of attenuate as in R. montana var. montana. The tepals are completely glabrous, unlike those of R. montana var. montana.

Roupala brachybotrys is also similar to R. monosperma, particularly those plants at the extreme of the variety which occur in Antioquia, Colombia. While the flowers and fruit of R. brachybotrys are exactly the same as those of R. monosperma in terms of size, shape, and indumentum, the leaves have a thinner texture and show no tertiary venation, and the petioles are not robust as they are in R. monosperma. It is possible that with more collecting in the areas between the distributional limits of these two species, the morphological gap between them will close

Phenology. Flowering in Oct.

Distribution:Ecuador South America| Azuay Ecuador South America|