Planta Lindheimeriance. 153 



PORTULACACE^E (by Dr. Engelmann). 



(579.) Talinum aurantiacum (n. sp.) : radice tuberosa ; 

 caule adscendente herbaceo ramoso patulo piloso ; foliis 

 lanceolatis s. lineari-lanceolatis subsessilibus carnosis ; flori- 

 bus axillaribus singulis ; pedunculis supra basin articulatis 

 bibracteolatis, fructiferis reflexis ; sepalis ovatis acuminatis 

 tricarinatis, fructiferis subpersistentibus ; petalis ovatis mu- 

 cronatis; staminibus sub-25 ; seminibus lineis gyratis carina- 

 tis et striis tenuissimis transversis eleganter notatis. — On the 

 Sabinas, and more abundantly on the Liano, rare about New 

 Braunfels, on rocky soil or almost naked rocks ; in flower 

 principally in July and August, but also at other seasons, 

 always after heavy rains. — Root white, fleshy, tuberous, 

 often bifurcated. Stems 8-16 inches long, ascending, much 

 branched. Leaves l§-2oreven 3 inches long, 2-4 lines 

 wide. Peduncle 4-5 lines long. Sepals of the same length j- 

 petals 5 lines long and 3 wide, orange to red ; filaments 

 red ; style and stigma orange. Seeds elegantly marked, 

 black, larger than in any other North American species. — 

 Distinct from all other species described by De Candolle, by 

 the single flowers. 



(580.) Talinum sarmentosum (n. sp.) : radice crassa ; caule 

 prostrato; ramis debilibus sarmentosis ascendentibus foliosis ; 

 foliis carnosis late ovatis cuspidatis basi attenuatis subsessili- 

 bus; cymis axillaribus bracteatis subtrifloris (rarius compositis) 

 versus apicem laxe paniculatis ; floribus longe pedicellatis ; 

 sepalis ovatis cuspidatis membranaceis deciduis ; staminibus 

 sub-15; seminibus nigris nitentibus sub lente tenuiter tuber- 

 culatis. — New Braunfels, among shrubs on the banks of the 

 Guadaloupe. July, September. — Stems prostrate ; branches 

 weak, ascending, supported by the shrubs under " which the 

 plant grows, often 6-10 feet long ;" — the specimens before 

 me are 2-4 feet long. Lower leaves 2| — 3| inches long, 

 1 — 1| wide. Pedicels 6-12 and more lines long, thickened 

 at the apex. Sepals about one line long ; flowers apparently 



