MESEMBRYANTHEMITM 



MESEMBRYANTHEMUM 2041 



A. Epapulosa: Plaril not bearing gliUering papilke or 



projections (species l-io). 



B. Plant stemiess or nearly so. 



c. Lvs. 2, minute, united into a globe. 



1. minimuin, Haw. Stemiess, when cult, often some- 

 what caulescent, obconical, with confluent rather 

 branched dots: fls. whitish; petals connate at base; 

 ovarj' exserted. G. 1:437. 



cc. Lvs. distinct. 

 D. Fls. yellow (Nos. 2-12). 

 E. Lvs. 4-6, semi-terete at the base, thickctiing and triquet- 

 rous at the apex. 



2. tigrinum, Haw. Tiger's Jaw. Stemiess or essen- 

 tially so : lvs. cordate-ovate, 2 in. or less long, glacuovis 

 green and marbled with wliite, the upturning edges 

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

 nearlv sessile, large, vellow. B.R. 260. Gng. 16:227. 

 G.L. 19:138; 27:226. A.F. 30:376. 



3. felinum, Haw. Fig. 2364. 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 S ciliate teeth; keel entire: fls. nearly 

 sessile, yellow. 



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

 middle, but tapering to the apex. 



4. albinatum, Haw. Stemiess: lvs. curved-triquet^ 

 rous upward, with a recurved mucro or spine at the 

 ape.x, bearing elevated whitish dots: fls. sessile, yellow. 



EEE. Lvs. half -cylindrical, of various sizes or forms on 

 the same plant, in alternate pairs, 

 n. angustum, Haw. Nearly or quite stemiess, small: 

 Iv.s. 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. 



6. bigibberatum, Haw. Rather caulescent: lvs. 

 .small, scarcely tongue-shaped, very smooth, usually 

 with 2 gibbosities, subequal, one attenuated and acute, 

 the other keeled-dilated, obtuse at the apex: petals 

 denticulate. 



7. Salmii, Haw. Nearly stemiess: lvs. decussate, 

 attenuate, one acute, the other oblique and blunt, 6-8, 

 ■nith a white spot at the inside of base: fls. sessile. 



EEEE. Lvs. tongue - shaped, 

 with one margin thicker 

 than the other, of two or 

 more forms, 2-ranked. 

 F. Peduncle less than 1 in. 

 long. 



8. linguaeforme, Haw. 

 Lvs. unequally tongue- 

 shaped, deflexed and some- 

 what falcate, becoming de- 

 pressed when old, flatfish 

 above, obliquely attenuate: 

 fls. yellow. Index Kewensis 

 makes the M. lingua-forme 

 of Haworth synon>Tnou.s 

 with M. obliquum, Willd,. 

 and uses Linna!us' M. liinj'n- 

 forme as a tenable naim . 



9. uncatum, iSalm-Dyck. 

 Nearly stemiess: lvs. nar- 

 row tongue-shaped, 21-2 in. 

 long, thjck, incurvate-unci- 

 nate at apex: fls. yellow; 

 petals revolutc. 



FF. Peduncle 1 in. or more 

 long. 



10. cultrStum, Salm- 

 Dyck. Lvs. 2-rankfd, thick, 



tongue-shaped and curved like a prtming-knife, blunt at 

 the apex: fls. yellow, on a somewhat 3-anglcd peduncle. 



11. depressum, Haw. Prostrate: lvs. narrow, tongue- 

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

 petals somewhat recurved. 



12. pustul^tum, Haw. Lvs. 2-ranked, narrow, 

 tongue-shaped, long and iiscending, blunt, bearing 

 pustules near the base: fls. yellow. 



DD. Fls. wliite or reddish. 



13. pubescens, Haw. Almost stemiess: lvs. silky- 

 pubescent, semi-cylindrical, oblique at apex: fls. bright 

 rose-red. Gt. 59:1.579 and p. 13. 



14. calamiforme, Linn. St. 1-2 in. long, woody: lvs. 

 glaucescent, cylindric, with a much-thickened base: fls. 

 in short stout pedimcles, solitary, white with pink 

 tips, 2J2 in- across. B.M. 7775. 



BB. Plant with an evident erect or prostrate st. 

 C. Foliage-lvs. distinct or essentially so (not truly per- 

 foliate nor connate). 

 D. <S(. or caudex prostrate. 

 E. Branches angular: lvs. acinaciform with smooth angles. 

 F. Peduncle with 2 bracts. 



15. acinaciforme, Linn. St. articulate, 2-3 ft. long, 

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

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

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

 largest in the genus," the stigmas 14: fr. size of a 

 gooseberry, and eaten by Hottentots. Gn. 62, p. 362. 

 Gt. .59, p. "15. —Handsome. 



16. rubrocinctum, Haw., is probably a form of the 

 last, differing in having a red line on the keels of the 

 lvs. B.R. 1732. 



17. aequilaterale, Haw. Differs from M. acinaciforme 

 chiefly in thinner lvs. and smaller fls.: sts. several 

 feet "long, often fonning large mats: lvs. 3-sided, 

 thicker than broad, to 2 in. long: fls. fragrant, to 2 in. 

 across, bright rose-purple, showy and fragrant. Native 

 to Austral., Tasmania, Chile and Calif. Grows on dunes 

 and banks near the sea. 



FF. Peduncle without bracts. 



18. edille, Linn. Fig. 2365. St. angular: lvs. oppo- 

 site, 3-4 in. long, triquetrous, curved, the keel serrate: 





2365. Mesembryanthemum edule. — Hottentot fig. 



