MESEMBRYANTHEMUM 



MESEMBRYANTHEMUM 



1007 



A. Epafui.osa: Pin iit not bearing gUdering papiUw or 



projt'i'flons (species 1-23). 



B. Plant stemless or nearly so. 



c. Lvs. 4-G, semi-terete at the base, tJiickening and 



triquetrous at the apex. 



1. tigrlnum, Haw. Tiger's Jaw. Stemless or essen- 

 tially so: Ivs. cordate-ovate, 2 in. or less long, glaucous 

 green and marbled with white, the upturning edges 

 with long, soft, ciliated teeth, the keel entire: fls. 

 nearly sessile, large, yellow. B.R. 3:2G0. 



2. felinum. Haw. Fig. 1395. Lvs. triquetrous, rhom- 

 boid-lanceolate, 2 in. or less long, but narrower than in 

 the last, somewhat glaucous, faintly dotted with white, 

 the edges with 8 ciliate teeth; keel entire: fls. nearly 

 sessile, yellow. 



cc. Lvs. 4-6. triquetrous, thickened from- the base to the 

 middle, but tapering to the apex. 



3. albinitum, Haw. Stemless: Ivs. curved -triquet- 

 rous upwards, with a recurved raucro or spine at the 

 apex, bearing elevated whitish dots: fls. sessile, yellow, 

 ccc. ii's. half-culindrical, of various sizes or forms on 



the same plant, in alternate pairs. 



4. angiistum, Haw. Nearly or quite stemless, small : 

 lvs. 2-ranked, linear, tongue-shaped, long, keeled at the 

 apex, somewhat unequal, one of them .straight-acute 

 and the other hooked: fls. nearly sessile, yellow. 



cccc. Lvs. tongue-shaped, with one margin thicker 



than the other, of two or more forms, 2-ranked. 



II. Peduncle less thanl in. long. 



"i. linguaeSorme, Haw. Lvs. unequally tongue-shaped, 



di-Hexed and somewhat falcate, becoming depressed 



when old, flattish above. <>blic|ui'ly iittenuate: fls. yellow. 



Index Kewensis makes tlic ^r . Innimiforme of Haworth 



svnonymous with M. iihlniini ii, . Willd., and uses Lin- 



n£Bus' iV. lingnifonne as a tenable name. 



DD. Peduncle 1 in. or more long. 

 0. cultr4tum, Salm-Dyck. Lvs. 2-ranked, thick, 

 tongue-shaped and curved like a pruning-knife, blunt 

 at the apex: fls. yellow, on a somewhat 3-angled pe- 

 duncle. 



7. depr^ssum, Haw. Prostrate: lvs. narrow, tongue- 

 shaped, recurved-depressed, acute: fls. yellow, with 

 petals somewhat recurved. 



8. pustul&tum, Haw. Lvs. 2-ranked, narrow, tongue- 

 shaped, long and ascending, blunt, bearing pustules ne.ar 

 the base; fls. yellow. 



BB. Plant with an evident erect or prostrate stem. 

 0. Foliage lvs. distinct or essentially so {not truly per- 

 foliate nor connate). 

 D. Stem or caudex prostrate. 

 E. Peduncle with 2 bracts. 



9. triooldrum. Haw. {M. tricolor, Hort.). Stem 1 ft. 

 long : lvs. cylindrical, acute, green, 2-3 in. long, 

 minutely punctate: fls. yellow, blood-colored inside, the 

 petals acute, the anthers brown. Gn. 24, p. 89. — There 

 is a white-fld. form. 



10. acinaciffirme, Linn. Stem articulate, 2-3 ft. long, 

 the young growth compressed : lvs. opposite, 2-3 in. 

 long, simitar-shaped (curved and thicker on one edge), 

 the keel dilated: fls. purple, about 4 in. across, "the lar- 

 gest in the genus," the stigmas 14: fr. size of a goose- 

 berry, and eaten by Hottentots. — Handsome. 



11. rubrocinctam, Haw., is probably a form of the 

 last, difi'ering in having a red line on the keels of the 

 lvs. B.R. 20:1732. 



12. sequilaterile, Haw. Differs from M. acinaciforme 

 chiefly in thinner lvs. and smaller fls.: fls.. fragrant, 

 1 % in. across. Native to Australia, Tasmania, Chile and 

 S. Calif. 



EE. Peduncle without bracts. 



13. idule, Linn. Stem angiiKar: lvs. opposite, 3—1 in. 

 long, triquetrous, curved, the keel serrate: fls. large, 

 yellow or purple, the stamens 8: fr. edible, being one of 

 the Hottentot Figs. Grows well on the sea cliffs in S. 

 England, making long, hanging masses (Gn. 55, p. 2,35, 

 with picture). 



fi4 



DD. Stem, or at least the branches, erect or prominently 



ascending. 



E. Fls. yellow, orange or copper-color. 



14. aurantiacum. Haw. Stem becoming 1 ft. or more 

 high, much branched, sometimes decumbent at base, the 

 branches somewhat compressed: lvs. 1 in. or less long, 

 smooth and glaucous, bluntly triquetrous: fls. orange, 

 with petals % iu. long and in about 3 series. 



15. aOreum, Linn. Larger: lvs. VA-2 in. long, cylin- 

 drically triquetrous, smooth and glaucous, niucronate: 

 fls. golden, 2 in. across, the petals in many series. B.M. 

 2(i2. — In this and the last, the lower lvs. are often nearly 

 connate at the base. 



EE. Fls. rose-color or piirpUsh. 

 F. Petals of two unlike kinds, -subulate and linear- 

 lanceolate. 



16. mutibile, Haw. With straw-color or reddish 

 tortuous, erect branches: lvs. about Ji in. long, com- 

 pressed-triquetrous, incurved, the keel entire, apex 

 acute fls mostlj solitarj onanupwardh thickened pe- 

 duncle rose color the inner short petals pale yellow. 



/y/m 



1395. Mesembryanthemum felinum {XH). 



17. inclatidens. Haw. Distingnished from the last by 

 scimitar-shaped lvs. and broader petals: lvs. crowded, 

 green, compressed-triquetrous and scimitar-shaped 

 (thicker on one edge). 



FF. Petals of one kind. 



18. blAndum, Haw. Twoft., with numerous branches: 

 lvs. distant, 2 in. or less long, compressed-triquetrous, 

 but with equal sides, narrow, minutely dotted, acutish: 

 fls. 2 in. across, pale rose, the petals toothed. B.R. 

 7:582. L.B.C. 6:599. 



19. gpect&hile. Haw. Stem prostrate, but branches 

 ascending : lvs. 2-3 in. long, crowded, glaucous, in- 

 curved and spreading, triquetrous, attenuate and mu- 

 cronate: fls. purplish; petals 1 in. long, the inner some- 

 what shorter. B.M. 396. 



20. muricitum. Haw. Stem suberect: plant bluish: 

 lvs. less than Vi in. long, somewhat incurved, deltoid 

 and toothed, very glaucous: fls. small and fragrant, the 

 petals acute. 



cc. Foliage lvs. truly connate or perfoliate. 

 D. Lvs. triquetrous. 



21. geminitum, Haw. Dwarf: stem subshrubby, the 

 branches ])^ol■uIlIl>^■nt : lvs. erect, glaucous white, the 

 cartilaginous margins entire: fls. white (!). 



22. acut&ngrulum. Haw. Stem shrubby, with rigid and 

 erect branches; lvs. sheathing, K in. long and about as 

 long as the internodes, glaucous green, triquetrous, 

 compressed near the apex, somewhat incurved : fls. 

 white, small, in a panicle. 



DD. Lvs. elongated, subulate or somewhat cylindrical. 



23. Btipuliceum, Linn. Dwarf, with erect, decussate 

 branches: lvs. lV,-2 in. long, very slender, crowded, 

 spreading and recurved, very glaucous: fls. in the axils, 

 mostly solitary, purplish. 



