292 CONTBIBCTIONS FROM THE NATIONAL HERBARIUM. 



Endosperm present, usually copious and 

 fleshy*; stipules usually wanting. 

 Herbs. 



Carpels as many as the sepals; 



plants succulent 58. CRASSULACEAE (p. 292). 



Carpels fewer than the sepals; 

 plants seldom or never suc- 

 culent. 

 Staminodia wanting; carpels 2 

 or rarely 3, distinct or 



only partly united 59. SAXIFRAGACEAE (p. 294). 



Staminodia present; carpels 3 

 or 4, wholly united into 



a 1-celled gynoecium....60. PARNASSIACEAE (p. 298). 

 Shrubs or trees. 



Leaves opposite; fruit a leathery 

 capsule, more or less adnate 



to the hypanthium 61. HYDRANGEACEAE (p. 298). 



Leaves alternate; fruit various. 



Fruit of thin-walled follicles, 

 free from the hypan- 

 thium. (Stipules pres- 

 ent. Opulaster) 64. ROSACEAE (p. 305). 



Fruit a berry; hypanthium 

 adnate to and prolonged 

 beyond the ovary 62. GROSSULARIACEAE (p. 301). 



58. CRASSULACEAE. Orpine Family. 



Succulent herbaceous annuals or perennials, 30 cm. high or less, with flowers in 

 cymes or I-sided racemes; flowers mostly perfect (except in one genus), symmetrical 

 and regular; sepals and petals 5, the former somewhat united at the base; stamens 10. 

 carpels 5; follicles 1-celled, dehiscent along the ventral suture. 



KEY TO THE GENERA. 



Inflorescence axillary 1. f lementsia (p. 292). 



Inflorescence terminal, cymose. 



Flowers yellow or purplish, never white, polygamous; 



plants usually 20 to 30 cm. high 2. Rhodiola (p. 293). 



Flowers white or tinged with pink, rarely yellow, per- 

 fect; plants usually less than 10 cm. high 3. Sedum (p. 293). 



1. CLEMENTSIA Rose. 



Perennial, 10 to 30 cm. high, glabrous, with usually numerous stems; leaves flat, 

 entire or toothed; flowers in axillary racemes or cymes, the petals rose or white, 

 twice as long as the calyx; follicles erect, with spreading tips. 



1. Clementsia rhodantha (A. Gray) Rose, Bull. N. Y. Bot. Gard. 3: 3. 1903. 

 Sedum rhodanthum A. Gray, Amer. Journ. Sci. II. 33: 405. 1862. 

 Type locality: Rocky Mountains of Colorado. 

 Range: Montana to Arizona and northern New Mexico. 

 New Mexico: Pecos Baldy (Bailey 014). Meadows, in the Arctic-Alpine Zone. 



