Flowers are produced in September, and fruits are found in November (young) and 
January. This species grows in the cerrado and forest patches intermixed with it; between an 
altitude of 1300 - 1400 m. The geographic distribution goes from around Belo Horizonte toward 
the northeastern part of Minas Gerais state, and adjacent Bahia in Brazil. 
C. tomentulosum is variable on its vegetative morphology; size, shape, and pubescence of 
leaves. The gradation, however, does not have clear gaps between the several morphotypes and 
so, no seggregates are considered proper to create. C. duartianum is considered here a glabrous 
form of C. tomentulosum. 
At some point, C. tomentulosum comes very close to some extremes of variation of the 
also variable C. haussknechtii. The best combination of characters to separate them includes 
hairs on lower leaf surface rather erect and abundant, leaf undersurface not glaucous, and leaf 
apex acute to long acuminate in the former species, while the latter one combines hairs on lower 
leaf surface usually spreading, leaf undersurface glaucous, and leaf apex acute to obtuse. 
Specimens examined. BRASIL. Bahia. Morro do Chapéu, EF. Pereira 9943 (RB). Minas 
Gerais. Without precise locality, Riedel 2462 (BR, G); Serra da Caraga, Riedel 522 (US, NY); 
Estr. Diamantina-Curvelo, a 17 km de Diamantina, N. L. Menezes et al. 22147 (MO, SP); 10 km 
SW of Diamantina, H. S. Irwin et al. 22448 (MO, NY); Diamantina, A. P. Duarte 9943 (MO); 
Diamantina, A. P. Duarte 8930 (RB); Chapada de Pirapora, FE. P. Heringer & L. R. Guimarais 
9817 (RB(2 dups), SP); Serra de Ouro Preto para Belo Horizonte, A. P. Duarte 8626 (RB(2 
dups)); Serra da Piedade, aprox. 6-7 km ao NE de Belo Horizonte, F. Lorea 5590 (FCME). 
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