MESEMP.RYANTriEMUiM 



A. Ei'apulosa: Plant nut bearing (/liitt' ri m/ papilla: <ir 



prvjeclioHs (speeios i-L'3). 



B. riiint xhtniess or nearly so. 



0. Lrs. 4-0, xviiii-ler.-te at the base, tliiekeni laj and 



(riiiuelrnit,i at the apex. 



1. tigrlnum, ITaw. Tkier's Jaw, Stenilc-is or fs^en- 

 tiully so: Ivs. cordate-ovate, 2 in. or less loui,', (glaucous 

 green and marbled with white, the \ipturning edges 

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

 nearly sessile, large, yellow. B.R, 3:2110. 



2. Jellnum, Haw. Fig. 1305. Lvs, fri((nctrous. rliom- 

 buid-huiceolate, 2 in. or less long, )iut narrower llian in 

 the last, somewhat glaucous, faintly dotted witli wl)ite, 

 the edges with « ciliate teeth; keel entire: Hs. nearly 

 sessile, yellow. 



CO. Ll'X. 4-G, triquetrous, Ihiekeaiil from the base to the 

 middle, but tapering to the apes. 



3. albinatum, Haw. Stemless: lvs. curved-tri.iuet- 

 rous upwards, with a recurved niucro or spine at tlio 

 upex, bearing elevated whitish dots : Us. sessile, yellow, 

 eoc. Lvs. half-ei/lindrieal, of varioas size.'^ or forms on 



the same plant, in alternate pairs, 

 i. an^stum. Flaw. Nearly or quite stemless, small : 

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

 apex, somewh.at unequal, one of them straight-acute 

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



ccoo. IJvs. tongue-shaped., with one marr/ia thiel-er 



than the other, of two or more forms, 2-ra>iked. 



D. Peduncle less than 1 in. long. 



.5. linguaefdrme. Haw. Lvs. unequally tongue-shai)ed, 



detlexed and somewhat falcate, becoming depressed 



when old, flatfish above, obliquely attenuati': fls. yellow. 



Index Kewensis makes the M. linguirforme of Haworth 



synonymous with 31. obi i(iiitiiii , \Vill(l.. and uses Liu- 



nfeus' M. lingultortne as a tenable name. 



DD. Pedunrle 1 in. or more long. 



6. cultritum, Salni-Dyck. Lvs. 2-rariked, thick, 

 tongue-shaped and curved like :i pruning-knife, blunt 

 at the apex: fls. yelb)\v, on a somewhat 3-angled pe- 

 duncle. 



7. deprtssum. Haw. Prostrate: lvs. narrow, t.mgii.- 

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

 petals somewhat recurved. 



S. pustuiatum. Haw. Lvs. 2-ranked, narrow, tomrue- 

 shaped, long and ascending, blunt, itfaring pustules near 

 the base: fls. yellow. 



BB. Plant u-ith a}t evident erert or prostrate strn). 



c. Foliage lvs. disfinri or ,ss,nh,i U i/ s,: {not trnlii p, r- 



folifile nor eonnol', I. 



D. stem or ea ude.r prosi rale . 



E. Pednnele with ~ braels. 



9. tricoldrum. Haw. [M.frieolor. Hort.). ytem 1 ft. 

 Iiiijg : lvs. cylindrical, acute, green. 2-3 in. louir, 

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

 petals acute, the anthers brown. On. 2-1, p. yi). — There 

 is a white-fld. form. 



10. acinacif6rme, Linn. Stem ai-ticulate, 2-3 ft. lone, 

 the young- growth compressed : Ivs. upjiosite, 2-3 in. 

 long, simitar-shaped (curved aiid 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. 



n. rubrocinctum, H:iw., is probably a form of the 

 last, differing in h:iving a retl line on the keels <.if the 

 lvs. B.R. 20:1732. 



12. asquilaterile. Haw. Differs from J/, ueinaeiforme 

 chiefly in tliinm-r lvs. and smaller fls.: Hs.. fragrant, 

 1^2 in. across. N;itive to .\nstrali;i, Tasinania, Chile and 

 S. Calif. 



EE. Pednnele without bracts. 



13. ^dule, Linn. Stem angular: lvs. opposite, .3-4 in. 

 long, tri(pietrons. cnrved. 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. 23.i, 

 with picture). 



04 



SII':SKMBKY.\NTHEMUM 



1007 



1.1.. Stem, or at least Ihr branches, erect or ji romineni 1 1/ 



ascending. 



E. Fls. ijelhiiv, orange oi eojiper-color. 



14. aurantiacum, Haw. Slem becoming 1 ft. or more 

 high, much branched, sometimes decumbent at base, the 

 branches s.imewhat compressed: lvs. 1 in. or less long, 

 smooth and glaucous, bluntly triquetrous: Hs. or.ange, 

 with petals ^4 in. long and in about 3 series. 



15. aureuiu, Linn. Larger: lvs. l'.j-2 in. long, cylin- 

 .Irically trii|uetr..iis, smooth and glaucous, mucronate: 

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

 2(12. — In tills and the hist, the hjwer lvs. are often nearly 

 connate ;it the base. 



EE. Fls. rose-color or purplish. 

 V. P'lals of lico unlike l.inds.-suhnlutc and linear- 

 lanceolate. 

 Ifi. mutabile. Haw. With .straw-color or reddish 

 tortuous, erci't lii-aiiidies: lvs. about ,'., iu. long, com- 

 pressed-triquetrous, incurve. I, the keel entiri3, .-qiex 

 acute: Hs. mostly solitary on an upwardly thickened ].e- 

 .luucle, rose-color, llie inner sli..rt. petals pale yellow. 



13yS Mebembr^a^themum fehnum (V )). 



17. inclaiidens, Haw. Distinguished from the last by 

 scimitar-shiiped Ivs. and br.)ader petals: Ivs. crowderl, 

 green, coniiiressi'd-triquetrous and scimitar-shaped 

 (thicker on one edge). 



FF. Petals of one hind. 

 IS. bldndum. Haw. T«.. ft., with numerous branches: 

 lvs. distant, 2 in. ..r less long, comi.ressed-triciuetrous, 

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

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

 7:582. L.B.C. (5:599. 



19. spectibile, Haw. Stem prostrate, but branches 

 ascending : hs. 2-3 in. h.ng, crowd.:.d, glaucous, in- 

 curved and spreading, tri.pietrous, attenuate and nni 

 cronate: fls. purplish ; petals I iu. long, the inniu' some- 

 what shorter. B.M. 396. 



20. mtiricatum, Haw. Stem suberect: plant bluish; 

 lvs. less tlnin ^-2 in. long, somewhat incurved, delt..i'l 

 and to.>tli.'d, very glaucous: lis. small ;u)d fr:igrant, the 

 petals acute. 



cc. Foliage Ics. Irnli/ connale or perfoliate. 

 D. Lvs. Icignetrous. 



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

 bran. dies procunil.etit : lvs. erect, glaucous white, the 

 cartilagin...us margins entire: fls. white (?). 



22. acutan^lum, Haw. Stem shrubby, with rigid and 

 erect braiiidies: Ivs. sheathing, ^-j in. long and about as 

 loiii: as the internoiles, glaucous green, tri(]uetrous, 

 coiiijir.-sse.l near the apex, somewhat incurved: fls. 

 white, sm;(li, iii a panicle. 



l.n. Lrs. , longah d . subulate or somewhat eyllndrieal . 



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

 branches: lvs. l'e-2 in. 1. nig. very slender, crowded, 

 spreading ;iiid reciir\"e.l, very glaucous: fls. in the axils, 

 mostly solitary, purplish. 



