BEGONIACE^l. 303 



umbilicated top. " Cotyledons foliaceous." — Shrubs or trees with developed leaves : areolte 

 spiny ; flowers terminal, in racemiform cymes or solitary. 



17. P. aculeata, Mill. Stem armed with fascicled, straight spines : branches trailing ; 

 leaves oblong-elliptical : 2-1, short, recurved spines at the downy base of the petiole ; flowers 

 in a lax cyme, white ; berry leafy with narrow sepals. — Besc. Fl. 4. t. 294. — Cactus Peres- 

 kia, L. — About 15' high; leaves H"-l", petiolar spines l'"-3'" long ; petal* oval. — Hab. 

 Jamaica (Marf.) ; Antigua!, Wullschl. 



P. portulacifolia, Haw., with solitary, purple flowers, and the berry devoid of exterior 

 sepals, is cultivated in Jamaica {Mac/.). 



LXXXV. CRASSULACES. 



Stamens definite, usually perigynous. Carpels distinct, or connected at the base, usually 

 furnished with hypogynous scales. Albumen thin, or none. — Leaves succulent, exstipulate. 



1*. BRYOPHYLLUM, Salisb. 



Calyx campanulate, inflated, shortly 4-fid. Corolla sympetalous, elavate above a broader, 

 prismatical base, shortly 4-fid. Stamens 8, inserted into the corolla-hase. Carpids 4. — A 

 succulent, suffrutescent herb ; leaves opposite, impari-pinnate, or simple : leaflets 1-5, ovate, 

 crenate ; flowers reddish-yellow, in a terminal panicle. 



1*. B. calycinum, Salisb. — Bot. Mag. t. 1409. — Calyx 1£"-1" long, shortly exceeded 

 by the corolla. — Hab. Naturalized in Jamaica !, March ; Antigua !, Wullschl. ; S. Vincent !, 

 Guild. ; [an Asiatic weed, ranging now from Mexico ! to Guiana !]. 



LXXXVI. SAXIFRAGES. 



Stamens usually definite and perigynous. Carpels usually 2, connected, mostly many- 

 ovulate •. styles distinct, rarely combined. Pericarp capsular. Seeds minute : embryo 

 small, usually enclosed within copious endosperm. — Leaves exstipulate, or if opposite, often 

 with interpetiolar stipules. 



1. WEINMANNIA, Z. 



Calyx 4-5-partite. Petals 4-5. Stamens 8-10, inserted into the calyx-base outside of 

 the hypogynous disc. Ovary 2-celled : styles diverging. Capsule birostrate : seeds several, 

 or 00 , hairy : embryo axile. — Woody plants ; leaves usually impari-pinnate with a winged 

 rhachis, opposite : intrapetiolar stipules deciduous ; racemes with the small flowers usually 

 fascicled. 



1. W. pinnata, L. Branchlets hirsute with short down ; leaflets 3-7-jugal, elliptical- 

 oblong, bluntish, serrate above the base, hispid on the midrib beneath, or glabrescent : 1 ha- 

 chis-wings spathulate : stipules broadly ovate-roundish ; flowers fascicled-racemose ; stamens 

 8, exserted ; capsule ovoid, twice as long as the styles : seeds several, ovoid, long-comose. — 

 Lam. 111. t. 313./. 1.— W. glabra, L.fll. W. alpestris, Macf.—A tree ; leaflets 4"'-8'" 

 long ; flowers white. — Hab. Jamaica !, Pd., common on the summits of the Blue Mountains ; 

 Dominica !, Imr. ; S. Vincent !, Guild. ; [Cuba !, French islands ! ; Mexico to Guiana !]. 



2. W. hirta, Sw. Branchlets villous-hirsute ; leaflets 3-4-jugal, elliptical, bluntish, 

 serrate above the base, pilose-pubescent chiefly beneath : rhachis-wings rhomboid-obovatc : 

 stipules reniform ; flowers fascicled- racemose ; stamens 8, exserted ; " capsule oblong, with 

 short styles."— A tree or shrub j leaflets 6"'-10'" long. — Hab. Jamaica !, A I., rare in the 

 forests near the summit of the Blue Mountains. 



LXXXVII. BEGONIACKE. 



Flowers unisexual. Sepals coloured, distinct. Stamens indefinite, central. Ovary in- 

 ferior 3 (-2-5) -celled : styles connected below, with papillose stigmas. Pericarp capsular. 



