30 ERYTHEA. 
Group II. Herbs; capsule circumscissile. 
2. PORTULACA, Tourn. Inst. 236. Calyx with short 
tube adnate to base of ovary; the lobes 2, deciduous. Capsule 
circumscissile near the middle. Petals 4 to 6. Stamens 
8to 20. Style 3 to 8-cleft. 
* Leaves flat. 
1. P. oneracea, Linn. Sp. Pl. 445. Prostrate; leaves 
obovate to spatulate, obtuse: calyx-lobes acute.—Widely 
distributed. 
2. P. retusa, Engelm. Pl. Lindh. 154. Stems somewhat 
ascending; leaves spatulate, retuse or emarginate: calyx- 
lobes strongly carinate-—Texas to Arizona. 
P. LANCEOLATA, Engelm. |. c. Suberect; lower leaves 
spatulate, obtuse; the upper lanceolate, acute: calyx-lobes 
searcely carinate.—Habitat of the last. 
* * Leaves terete or subterete. 
4. P. steLLirormis, Moc. & Sess.; DC. Prodr. iti. 353. 
Perennial by creeping tuberous-thickened and sometimes 
moniliform rootstocks: leaves terete, 1 inch long, surpassing 
the flower clusters: axillary hairs short and soft.— Western 
Texas to Arizona. 
5. P. waLimorpEs, Linn. Sp. PL 2 ed. 639. Perennial, 
fleshy-rooted: leaves oblong, somewhat compressed; axillary 
hairs copious.—Keys of Florida and West Indies. 
P. pinosa, Linn. Sp. Pl. 445. Annual; leaves linear- 
subulate, nearly terete, $ to 4 inch long, with copious axillary 
hairs.—Arizona to Florida, and widely dispersed in warm 
countries. 
P. parvuta, Gray, Proc. Am. Acad. xxii. 274. Annual, 
diffuse: leaves oblong-linear, obtuse, nearly terete; axillary 
hairs copious.—-Texas, New Mexico and the Mexican border. 
3. LEWISIA, Pursh, Fl. 368. Sepals 6 or 8, distinct, 
