AD FLOBAM INDICAM — CEASSULACEiE. 95 



very irregularly-developed petals ; the latter are variable in shape 

 in all the species. The number of parts in each iioral whorl varies 

 from 4-5 in most species, and the stamens from 8-10. In all, 

 the alternate stamens are inserted on the petals, never more than 

 half-way from the base, but to a very variable degree in many 

 species. 



In Sedum muUicaule the divaricating follicles appear slightly 

 connected at the base (as they are in S. pallidum, M.B.,and others), 

 which has made us very reluctant to propose the new genus Tri- 

 actina for one of the Eastern Himalayan species whose habit 

 agrees in many respects with that of S. multicaule. But the 

 consolidation of the carpels in Triactina is complete up to their 

 middle ; their number is constantly only 3, which, and its very 

 minute calyx and whorled leaves, together seem to indicate the 

 propriety of keeping it separate. It links the very different and 

 non-crassulaceous-looking American genus Pew ^^ or «m yNithSedum 

 in a very remarkable manner. 



A. E-HoniOLA. Flores dioici, v. polygami. Bhizoma suberectum, 

 crassum, squamatum. Bami suberecti, validi, foliosi, simplices. 

 Cymcd terminales. 



a. CymcB densiilorse, nudae ; ramis non aut vix bracteatis foliatisve. 



1. Sedum Rhodiola {I).C. Frodr. iii. 401). Foliis sessilibus obovatis 

 oblongisve serrato-dentatis, cyma congesta composita, floribus 4-5- 

 meris breve pedicellatis flavidis, squamulis hypogynis late lineari- 

 oblongis obtusis, stylo recurve, stigmate discoideo. — Led. Flor. Ross. 

 ii. 179. 



Hab. In Himalaya et Tibetia occidentali subalpina et alpina ; frequens, 

 a Garwhal! ad Kashmir! alt. 12,000-17,000 ped., Strachey Sf Win- 

 terbottom, &c. (fl. Jul.) (v. v.) 



Distr. Terris areticis totis ! et montibus Europae ! Asise ! et Ameriese 

 borealis ! 



Variat insigniter statura, latitudine foliorum et magnitudine florum. 

 Flores interdura gracile pedicellati. Calyx petalis brevier, interdum 

 brevissimus. Petala lineari-lanceolata v. anguste linearia. Stamina 

 petalis 2-3plo longioribus. Glandulce hypogynce interdum ebUque 

 trifidae. 



2. Sedum heterodontum {Hf. 8f T.). Ramis rebustis, foliis ses- 

 silibus basi retundatis cordatis v. auriculate-bilebis evatis grosse 

 irregulariter incise-dentatis, cyma densissime cengesta capitata, flo- 

 ribus 4-meris sessilibus roseis ?, squamulis hypogynis ut in S. Rhodiola, 

 stylo recurve, stigmate parvo. — An forma S. Rhodiolce ? 



Var. a. Foliis basi non aut vix cordatis profunde dentatis. 



