BRITTON: STUDIES OF WEsT INDIAN PLANTS—XII 3) 
6. DORSTENIA TUBUCINA R. & P. FI. Per. 1: 65 
Arima Savanna, Trinidad, collected by Purdie, according to 
Grisebach. 
7. DORSTENIA PETRAEA Griseb. Cat. Pl. Cub. 58.1866 
Mountains of southern Oriente, Cuba. 
8. DORSTENIA PELTATA Spreng. Neue Entd. 3: 22. 1822 
Santo Domingo, near Samana Bay. 
9g. DorSTENIA CRASSIPES C. Wright; Griseb. Cat. Pl. Cub. 
1866 
Near La Catalina, Oriente, Cuba (Wright 2224). 
10. DORSTENIA ERYTHRANDRA C. Wright; Griseb. Cat. Pl. Cub. 
58. 1866 
Rocks by the sea, Baracoa, Oriente, Cuba (Wright 2225). 
11. Dorstenia Roigii Britton, sp. nov. 
Rootstock stout, 8-10 cm. long, 5-6 mm. thick. Petioles 
rather stout, densely puberulent, 15 cm. long or less; ie blades 
ovate, peltate below the middle, chartaceous when dry, coarsely 
undulate- dentate all around, strongly vein fen on 
atk green and scabrous above, paler and densely puberulent 
beneath, the apex obtuse or acute, the base rounded; peduncle 
puberulent, 5-7 cm. long; receptacle orbicular, nearly flat, 
peltate, about 10 mm. in diameter. 
On rocks at the foot of Mogote de la Jagua, Consolacion del 
Norte, Pinar del Rio, Cuba, June 17, 1923 (Roig 2547). 
12. Dorstenia confusa Britton, sp. nov. 
agree slender, tuberiferous. Pe mae slender, tomentu- 
lose, 4-6 cm. long; leaf-blades broadly ovate, membranous, 
2.5-3 cm. ae g, nolale somewhat below eal gyre finely pubes- 
cent beneath, sepecteny on the veins, repand-crenate, the apex 
blunt, the base ounded; peduncle tomentulose, about 4 cm. 
long; ‘receptacle orbicular, cee discoid, 6 mm. in diameter, 
tomentulose, ciliate 
Monte Verde, ie Cuba (Wright 2226, in Gray Herb- 
arium). 
