— 244 — 



15. Branches and leaves glabrous. Petals glabrous 16 



Branches puberulous. Leaves sometimes glabrous. Petals pubescent 



outside 17. 



16. Leaves leathery, veins hardly visible, apex usually obtuse. Stamens 



ordinarily free C. Sasanqua. 



Leaves rather thin. nervature imprinted froni above, apex acuminate. 

 Stamens halfway united . . *C. Grijsii. 



17. Leaves pubescent. Stamens nearly free. Three short styles. C. ôrev/s/y/a. 

 Leaves glabrous. Stamens more or less united 18. 



18. Leaf size 4'/2 — 10 to 3 cM., nervature prominent on the upper side. 



Petals 4 cM. long C. Pitardii. 



Leaf size 4V2 to 2 cM., nervature prominent on both sides. Petals 

 1-2 cM. long C. gnaphalocarpa ') (E D). 



19. (6). Leaves small with long acuminate apex. Flowers short-stalked. 



Perianthium more or less hairy. Stamens now and then partly 



united. Ovary usually glabrous 20. 



Leaves small or large, acuminate or not. Flowers long-stalked, pen- 

 dulous. Perianthium scarcely ever pubescent. Stamens united at 

 their base only. Ovary sometimes glabrous 27. 



20. (Sectio Theopsis.)^) Sepals pubescent outside 21. 



Sepals glabrous, with membranaceous margin 23 



21. Ovary and style hirsute C. parvifolia (E D). 



Ovary and style glabrous 22. 



22. Petals pubescent on their outer surface, emarginate, usually red. 



Pedicel short *C. rosiflora. 



Petals glabrous, obovate, white. Pedicel rather long, bracteate. 



*C. euryoides. 



23. Ovary pubescent. Stem spotted with white *C. piinctata. 



Ovary glabrous 24. 



24. Branches more or less pubescent 25. 



Branches glabrous 26. 



25. Leaves ovate, 2 V2 — 3 cM long. Petals 8-9 mM. long. Sepals 



ciliated C. Forrestii. 



Leaves ovate, 9—10 cM. long. Petals 30 mM. long. Sepals glabrous, 



with membranaceous edge C. Henryana. 



Leaves elliptic, 2-2'/2 cM. long. Petals 7—10 niM long. Sepals 



glabrous C. lutchuensis. 



26. Petals emarginate or obovate. Stamens nearly free. Leaves stiff, rather 



large C. cuspidata. 



Petals obovate. Stamens halfway united Leaves thin, very small. C. Costei. 



') The différence with C. Pitardii should be ascertained by direct comparison of the 



plants. 

 ^) It seems to nie that the several authors hâve finaily too much split up this group, 



which is, apparently, very much polymorphic. As however ail species are properly 



distinguished from each other, I leave them nnchanged, although they are hardly 



fit for practical use. 



