Crassulaceae 183 



Stamens .".-lit. Ovary 4-angled, 4-beaked. Capsule 

 4-sulcate, many-seeded, opening at the summit. 



1. O. glaucescens Camb. Annual or biennial; 15-30 cm. 

 bigb, branching at base, the branches ascending; leaves often 

 fascicled and somewhat fleshy, 1-2 cm. long; spikes elongated 

 terminal, the stem-like branches bracteate, densely flowered; 

 petals oblong, obscurely lobed, posterior; stamens 3, posterior; 

 capsule depressed globose, 3 mm. in diameter, -blobed, 4-cuspi- 

 date : seeds smooth. 



In low saline places. Portugese Bend : Elsinore; also at San Diego anil 

 Tia Juana. April-May. 



Family 38. CRASSULACEAE. Stone-crop Family. 



Mostly succulent or fleshy herbs with cymose or rarely 

 solitary, regular or symmetrical flowers. Stipules none. 

 Calyx persistent, free from the ovary or ovaries, 4-5-cleft 

 or 4-5-parted. Petals equal in number to the calyx- 

 lobes, distinct or somewhat united below, persistent. 

 Stamens of the same number or twice as many with fili- 

 form or subulate filaments and longitudinally dehiscent 

 anthers. Receptacle with a scale at the base of each 

 carpel. Carpels equal to the calyx-lobes in number, 

 distinct or united below, with subulate or filiform styles 

 and numerous ovules. Follicles membranous or coria- 

 ceous, 1-celled, dehiscent along the ventral suture. Seeds 

 minute ; embryo terete, imbedded in fleshy endosperm. 

 The descriptions of most of the species and genera are 

 adopted from Britton and Rose's recent article, "New or 

 Noteworthy North American Crassulaceae," Bui. X. Y. 

 Bot. Gard. 3:1-45. 1903. 



Plants not minute. 



Petals spreading, distinct at base; leaves not linear. 1. Sedcm. 

 Petals spreading, yellow, slightly united at base; leaves linear; peren- 

 nials by corms. 2. Hasseanthcs. 

 Petals spreading, united at base; leaves narrow; perennials by root- 

 stocks. 3. Stylophyllcm. 

 Petals erect, united at base; carpels erect. 4. Dcdleya. 

 Plants minute, succulent. 5. Tillaea. 



