29'^ BECANDRIA TEl^TAGYWIA. 



Species. 1. L. Alpina. 



A dispersed genus, but principally European. 



320. OXALIS. X. (Wood-sorrd.) 



Calix 5 leaved, persistent. Petals 5, partly 

 connected at the claws. Stamina unequal, con- 

 nected at the base, 5 of them alternately shorter. 

 Caj)sule pentangular, 5-ceIlcd, bursting at the 

 angles. Seeds covered by an clastic arilius. 



Herbaceous plants with tuberous roots, caulescent or 

 scapose; leaves ag-gregated, alternate, temate, in a few- 

 species simp1r> nv hinatf, r] imitate, or mull ifid, in 1 pinnatft 

 ivitli the leaves sensitive as in Mimosa; leaves at first spi- 

 rally involute; scape 1-fiowexcd, or unibellate, and in- 

 volu crate. 



Species. 1. O. JlceloseUa. 2. violacea. This species 

 appears often to flower again late in the autumn, $nd is 

 then destitute of leaves. 3. Lyoni. Ph. 4. coniiculata. 

 5. stricta. 6, Billenii. These 2 last are scarcely distinct 

 species. 



This genus of more than 100 species is, with a few ex- 

 ceptions in Europe and America, peculiarly hidigenous 

 to the Cape of Good Hope. Tiie leaves of all the species 

 are more or less sensitive and nictitant. 



221. PENTHORUM. L. 



Calix 5 to 10 cleft. Petals 5 or wanting. 

 Capsule with 5 cusps, and 5 -cells, cells dividing 

 transversely, many-seeded^ seeds minute. 



fierbaceous, and subaquatic; leaves alternate, not suc- 

 culent, margin serrate; flowers terminal, cymosely spiked. 



Species. 1. F. sedoides. According to Mr Tursii 

 there is a second species of this genus in China, collect- 

 ted by Sir G. Staunton. 



S22. SEDUM. L. (Stonecrop.) 



Calix 5^cleft. Petals 5. Five nectariferous 

 scales at the base of the germ. Capmles 5, su- 

 perior, many-seeded, opening internally. 



Herbaceous and succulent; leaves alternate, sometimes 

 subverticillate; flat or cylindric; flowers cymose, mostly 

 terr.iinal, some^^imes solitary and axillary. 



Species. I. S. pulchelliim. Closely allied to the fol- 

 lowing. Commencing in Virginia about Harper's Fcrrv, 



