XX. CBASSULACE.E. 



Sedum Telephium (Orpine). 



Fig. 331. 

 Habit. 



The most complete type of this 

 order is not the genus Crassida, 

 to which it owes its name, but 

 some genus with diplostemonous 

 flowers such as Sedum 1 (figs. 

 331-337), wherewith we shall 

 commence its study. The recep- 

 tacle usually forms a depressed 

 cone. 2 The calyx usually con- 

 sists of five sepals, nearly free, 

 or united for a variable extent 

 below, valvate or imbricate in 

 the bud. There are as many 

 alternating petals, imbricate or 

 twisted in the bud. The andro- 

 ceum consists of two whorls, of 

 five stamens each, the outer 

 superposed to the sepals, the 

 inner to the petals. They may 

 be distinctly hypogynous, and 

 consist of a free filament 3 and a 

 subbasifixed anther, whose two 

 cells dehisce by an internal or 

 marginal longitudinal cleft. 4 

 The gynasceum, inserted near 

 the apex of the floral receptacle, 

 consists of five oppositipetalous 

 carpels, free or nearly so, each 

 with an entire bilobed or emarp-- 



1 T., Inst., 202, t. 140.— L., Gen., n. 579 — 

 Adans., Fam. des PL, ii. 248. — J., Gen., 307. — 

 G^rtn., Fruct., i. 313, t. 65. — PoiR., Bid., iv. 

 628 ; Suppl., iv. 206 ; III., t. 390.— DC, Prodr., 

 iii. 401. — Space, Suit, a Buffon, v. 90. — Endl., 

 Gen., n. 4622.— Payee, Organog., 365, t, 79.— 

 B. H., Gen., 659, n. 9. 



2 Sometimes flat or slightly concave. 



3 Their inner part is often covered with short 

 hairs or projecting papillaj. 



4 The pollen consists of ellipsoidal grains 

 with three folds, which when moistened, become 

 spherical, with three bands. H. Mohl (in Ann. 

 Sc. Nat., ser. 2, iii. 331) distinguishes two 



