:34 



CXLJIT. COMMELINACE^ (cLARKE). 



\Coin7)mlina. 



10. 

 11. 



12. 

 13. 

 14. 



C. violacea. 



C. trilohosperma. 



C. purpurea. 

 C. nyasensis. 



C, cceleslis. 



C. crass icauUs. 



C. Schtoeiiifurtkii. 



Heeds ovoid or ellipsoid. 



Spathes shaggy with multicellular 



hairs . . . . . 7, C. angustissima. 

 SpatheB glahrous, with ciliate mar- 

 gins 



Seeds nearly flat, 3-lobed . 



Roots thick ; stems thicker, hardened at the 



base. 



Spathes I in. long; leaves narrowly linear. 



Spathes shaggy, with a nearly straight 



tip ...... 



Spathes glabrate, with a deflexed tip . 

 Spathes IX in. long; leaves long linear- 

 lanceolate ..... 



Leaves ovate ...... 



§§§Seeds smooth ...... 



IJSpathe having its margins connate near the base, so 

 that the -snathe is b )oded or obliquely funnel- 

 shaped. (See also 14. C, Schweinfurthii.) 

 Peduncle of spathe hardly longer than the leaf- 

 sheath. 

 Leaves triangular at the tip, not very acute. 

 Spathes obliquely fnnnel-shaped 

 Spathes with tlie keel much curved 

 Leaves acumijiate to an acute tip. 



Leaves lanceolate, glabrate .... 



Leaves elliptic-laTiceolate, hairy 

 Peduncle of the spathe much longer than the 

 leaf-sheath. 

 Spathe hirsute ; seeds subglobose, smooth . 

 Spathe glabrous; seeds elongate, transversely 

 wrinkled . . . . • « • 



■^\I[eterocarpus. — Capsule 3-celled, 2-valved ; the dorsal valve deciduous with the 

 included seed, indehiscent, the seed very intimately attached to the pericarp. 

 Ventral cells with 2 ovules in each cell ; both usually withering (without pro- 

 ducing a fertile seed) ; in a few species the capsule is frequently 3-seeded. 

 Margins of spathe connate at the base ; capsule often 

 3-seeded ; corolla blue . . . . . 



Spathe simply folded, the margins free at the base ; 

 corolla yellow. 

 Leaves small, at most 1\ in. long 

 Leaves, or many of them, li in. long or more. 

 Leaves linear or linear-lanceolate. 

 Leaves nearly glabrous 

 Loaves puberulous ; seeds ^ in. long 

 Leaves lanceolate or broader (elliptic or ovate). 

 Mature leaves nearly glabrous. 

 Spathes 1-2 in. long, acuminate 

 Spatiies f in. long, shortly acute 

 Spathes up to 3 in, long, elongate-acuminate 

 Matuj'e leaves pubescent. 

 Leaves lanceolate. 



Spathes 1-2 in. long . . . . 25. C. Icrehsiana. 



Spathes up to 2\ in. long . . .24. C. involucrosa. 



Leaves ovate, subcordate at the base . . 26. C. cordifolia. 



21. C. For.skalcei. 



30. C. Mannii. 



seeds -^^ in. long 



28. 

 29. 



22, 

 23. 



27. 



C. Kirkii. 

 C. boehmiana. 



C africana. 



C. edulis. 



C. Buchanani. 



I 



