COMMELINACE. 389 
13. Commelina scabra, Benth. Pl. Hartw. p. 26; C. B. Clarke in DC. Monogr. 
Phanerog. iii. p. 153. 
Commelina ehrenbergiana, Otto in Link, Klotsch, & Otto Ic. Pl. Rar. Hort. Bot. Berol. p. 75, t. 30 
(C. scabra in textu). 
Commelina carnea, Schl. Ind. Sem. Hort. Halens. 1839, p. 9, adn. 
Sourp Mexico, Aguas Calientes (Hartweg), near Regla (Ehrenberg), without locality 
(Parkinson). Ub. Kew. 
14, Commelina tuberosa, Linn. Sp. Pl. ed. 1, p. 41; C. B. Clarke in DC. 
Monogr. Phanerog. iii. p. 149; Andr. Bot. Rep. t. 399; Schnizl. Iconogr. t. 48. 
Commelina parviflora, Reichb. Fl. Exot. u. p. 17, t. 142, non Link. 
Commelina undulata, Lodd. Bot. Cab. t. 1558, non R. Br. 
South Mexico, Pedregal and region of Orizaba (Bourgeau, 647, 649, 2806). Hb. 
Kew. 
15. Commelina virginica, Linn. Sp. Pl. ed. 2, p. 61; C. B. Clarke in DC. 
Monogr. Phanerog. iii. p. 182 (varietates w—-e); A. Gr. Man. Bot. Northern U. 8. ed. 5, 
p. 546. 
Commelina elegans, H. B. K. Nov. Gen. et Sp. i. p. 259; Seub. in Mart. Fl. Bras. iii. 1, p. 263, t. 37. 
fig. 2. 
Commelina caripensis, H. B. K. Nov. Gen. et Sp. i. p. 260. 
Commelina sulcata, Hoffmannsegg in Link, Jahrb. iti. p. 74, ex Roem. et Schult. Syst. Veg. i. Mant. 
p- 94. 
Commelina deficiens, Hook. Bot. Mag. 2644. 
Commelina auriculata, KH. Meyer in Presl, Reliq. Henk. i. p. 137. 
An exceedingly common species, ranging from New York, I..nois, and MICHIGAN, 
southward through Mexico, CenTraL America, and the West Inpigs to Paraguay and 
Urvevuay. Hb. Kew. 
[The large and widely-spread genus Aneilema does not appear to be represented 
within our geographical limits. | 
3. DICHOBISANDEA. 
Clarke in 1 Monogr. Phanerog. iil. p. 272, 
This genus is restricted to America and chiefly to Brazil, ranging from Mexico to 
South Brazil. ‘Twenty-eight species are described by Clarke. 
1. Dichorisandra aubletiana, Rem. et Schult. Syst. Veg. vii. p. 1181; ©. B. 
Clarke in DC. Monogr. Phanerog. iii. p. 273 (varietates ae). 
Commelina hexandra, Aubl. Pl. Guian. i. p. 35, t. 12. 
Tradescantia divaricata, Vahl, Eclog. Amer. i. p. 34. 
e. persicarizfolia, C. B. Clarke, 1. c. p. 274. 
Costa Rica (Hoffmann).—Cotomaia to Norta Braziu. 
