310 



NATURAL HISTORY OF PLANTS. 



Bryopliyllum calycinum. 



ltional forms of Cotyledon proper with a cylindrical corolla of restricted 

 gamopetaly. Hence these points will allow ns to divide Cotyledon 



only into sections, 1 which are often ill-defined. 

 Thus constituted it contains at least threescore 

 species, 2 especially abundant in the warm and 

 temperate regions of Africa, less so in Eastern 

 and Central Asia, Mexico, and South and West 

 Europe. They are herbs or undershrubs of 

 most variable habit. The leaves, differing in 

 thickness and succulence, may be alternate or 

 opposite, distant as in Sedum, or approximated 

 into a rosette as in Sempervivmn, and are some- 

 times even peltate. The flowers are erect or 

 pendulous, racemose spicate or cymose. 



Kcdanchoe 3 and BryojjJtyll/rm, closely allied to 

 Cotyledon, have tetramerous flowers. In the 

 former the sepals are nearly or quite free, and 

 the corolla is tubular hypocrateriform, often 

 The genus comprises herbs and undershrubs 

 from Asia, tropical Africa, and the Cape, where there are a 

 score, and one species is found in Brazil. 4 Their leaves are 

 opposite and fleshy ; their flowers form racemes of cymes. Brj/o- 

 phyllum 5 has the corolla of Kalanclioe (fig. 344) ; but the calyx is 

 garaosepalous, cylindrical or tetragonal, with four teeth or rather 



Fig. 344. 

 Flower. 



tumid at the base. 



Garienz., ix. 9 ; in Link, Kl. et Ott. Ic. PI. 

 Bar., ii. 43. Herbs or shrubs ; calyx often well 

 developed, and urceolate foliaceous fleshy ; corolla 

 urceolate, rounded or angular. Mexico, Peru, 

 Japan ? (DC, Mem., ii. 28, t. 5, 6.— Cat., Icon., 

 t. 170. — J acq. f., Eclog., t. 17. — Sweet, Brit. 

 Ft. Gard., iii. 275.— Hot. Beg., t. 1247; (1810), 

 57; (1844), 1; (1842), 22, 29; (1845), 27; 

 (1847), 57.— Bot. Mag., t. 3570.— Walp., Bep., 

 ii. 259, 935 ; v. 794 ; Ann., i. 323 ; ii. 669.) 

 l 



/ 1. Umbilicus (DC). 

 Cotyledon. 2. Eucotyledon. 

 Sect. 4. ' 3. Echeveria (DC). 

 , 4. Pistorinia (DC). 

 2 Ledeb., Ic. Fl. Boss., t. 57, 395.— Geen. 

 & Godb., Fl. de Fr., i. 630.— Webb., Phyt. 

 Canar., i. t. 26. — Haev. & Sond., Fl. Cap., ii. 

 370.— Bot. Mag., t. 321, 2518, 2601, 4098.— 



Bot. Beg., t. 915.— Walp., Sep., ii. 257, 258 ; 

 v. 792 ; Ann., i. 323 ; ii. 668. 



3 Adans., Fam. des PI., ii. 248. — DC, Prodr., 

 iii. 394.— Endl., n. 4616.— B. H., Gen., 659, n. 

 7. — Calanchoe Pees., Syn., i. 445. — Kalenchoe 

 Haw., Syn., 109. — Vereia Andb., Bot. Bepos., 

 t. 21. — Verea W., Spec, ii. 471. 



4 Vent., Malm., t. 49.— DC, PI. Gr., t. 64, 

 65, 100.— Wall., PI. As. Bar., t, 166, 167.— 

 Wight, 111., t. Ill; Ic, t. 1158.— Haev. & 

 Sond., Fl. Cap., ii. 378. — Hook. p. & Thoms., 

 in Joum. Linn. Soc, ii. 91. — TfL., in Ann. Sc. 

 Nat., ser. 4, viii. 149. — Walp., Sep., ii. 256 ; 

 Ann., i. 323; ii. 667. 



5 Salisb., Par. Lond., t. 3. — DC, Prodr., iii. 

 295; Organogr., t. 22, fig. 2. — Endl., Gen., n. 

 4617.— B. H., Gen., 658, n. 6. — Crassouvia 

 Commees., mss. (ex Endl.). — Physocalyiium 

 Vest, in Flora (1820), 409. 



