Flowers present from August to November. Vegetation type: campo, campo rupestre, 
cerrado. Altitude 1000 - 1100 m. Growing in white sand soils. So far only known from a small 
area in around the border of Minas Gerais and Bahia states in Brazil. 
Presence of red hairs on vegetative organs, besides their common occurence on the inner 
parts of flowers, is not a particularity of C. rubrinervium alone. They are seen from time to time 
on the edge of cataphyls in shoot buds, axillary buds, along stems, or also on veins on the leaves 
of several species. However, they never get to the point found in the leaves and stems of this 
species, where consistently they are abundant and visible with a hand lens (or to the naked eye). 
It is also separate from its closest morphological relative (C. se/lowianum), by the absence of 
domatia, leaves never obovate or oblanceolate, and tepals (that seem to be) partially persistent. 
Paratypes. BRAZIL. Bahia: Candido Sales, along highway BR-116, (fl), G. Hatschbach 
50030 (FCME, MBM, MO); Morro do Chapéu, (fl), E. Pereira 10008 (HB); Rodovia BR-4 
divisa dos Estados de Minas Gerais e Bahia, (fl), R. Belém 1635 (IAN, NY, UB); Serra de Agua 
de Rega, ca. 23 km N of Seabra, 1000 m, (fl), /rwin et al. 30868 (ENCB, MG, MO, NY). Minas 
Gerais: Jequitinhonha, Serra de Areia, ca. 47 km S of Pedra Azul, 1100 m, (fl), R. Harley et al. 
25261 (MO, SP); km 200 on road between Diamantina and Virgem da Lapa, (young fr), A. 
Duarte s/n (MO); Pedra Azul, para divisa da Bahia, (fl), A. Duarte 10538 (MO, RB); Serra 
Sapucaia, 1000 m, (fl), 1 Magalhdes 17282 (RB); Divisopolis, between Divisopolis and 
Joaima, (fl), M Magalhdes s/n (RB). 
The /rwin et al. 30868 collection is suspected to be conspecific with C. rubrinervium, but 
153 
