409 Haw. SuDT^l. Pi. Succ, r. 89 (ISIO), and Rev. tl. 3ucc., p. 103; 

 Splm Vck, I-^es.g7, f. 1; Berger, Mes. und Port. p. 231, f. 49, 

 conied from Sglm %ck; N. E^ Br. InnJourn. Linn. 3oc. ^ot. Vol. 

 XLV, p. 125. J--, bigibberatum. Haw., in i'hil -^g. , 1826, p. 328 

 (not nj,. 338 as I previously quoted, nor 1824, p. 3S9 , as quoted in 

 Indev.' ■'^ev/ensis) ; Salm ^yck, Mes. I 7, f. 4; Berger, Mes. und Port., 

 p. 233. 



Jansenville Division^ Mouht Stewart, Pole Evens, 5579. This 

 •vms in cultivation before. 1732, 



This is one of the oldest knovm species in cultivation, end seems 

 to vary very considerably in the size and shape of its leaves, as 

 indicated in '^iet, 186. In my previous account of it I vj&s under the 

 impression that the plant figured by Saim iJyck under the names M. 

 semicylindricura, M. difforme and M. bigibberatum represented a dif- 

 ferent species; but in taking this view I v/as wrong, for l<^st year 

 my plant of G, semicylindricum produced leaves typical of that spe- 

 cies and others like those of the Plant 3e.lra %"ck has figured .under 

 those three names, for as cJ- have previously stated, those differ- 

 ent three figures might all have been drawn from the very same 

 Individual in different years. 



Ther can, I think, be no question that H. semicylindricum, i^i. 

 bidentatum and M. bigibberatum are specifically identical, but wheth- 

 er this species is really distinct from. G, difforme is a point that 

 has yet to be conclusively decided. I have never seen G. difforme, 

 as it appears to have died out of cultivation, and from the descrip- 

 tions of it the only character that appears to distinguish it from 

 G. semicylindricum is that the pedicel is shorter and quadrangular; 

 when re-discovered possibly other characters may be foun. 



^-3^ drawine; (Fig, 186) represents the upper pert of five leaves, 

 all from the same plant, and part of one leaf (the long, lovrer one) 

 from another plant raised from seed out of the same seed-pod as 

 that bearing the other five leaves. 



4. G. subditum, H. S. Br. (l^ig. 187).-- Leaves unequal, the 

 pairs obliquely crossing one another, lr-3 inches long, 4-5 lines 

 broad, and 3-3t lines thick, the larger leaf of a pair slightly con- 

 cave above, very convex on the back, the shorter of each pair acute, 

 and the longer i^rolone^ed beyond the ridge ^^t the end of the flat 

 T^art Q-^ the face into a compressed and keeled blunt point ^-^^ inch 

 long, v/hich is slightly incurved, and both leaves are usually curved 

 edgeways to one side, green, pullicid-dotted. -^edioel 5-7 lines 

 long. Calyx compressed, 3-angled, 4-lobed, with the tv/o longer 

 lobes keeled and ciliate on the keel, and the two shorter lobes v/ith 

 membranous margins. Corolla 2-24: inches in diameter; petals in 



1-2 series, linear, very obtuse and minutely tooted at the apex. 

 Stamens yellov*. Stigmas 10, short, plumose, yellowish, 



Mesembryanthemuiii praepingue, Salm ^ck, ^--es. , 7, Fig, 5^ 

 Berger, I-'es. und Port., p. 237, and all other modern authors, but 

 not of Hawoth, 



Fig, 187 represents the apical r^ortion o''' tv/o of the large and 

 one of the smaller leaves of each pair, adapted from Salm %"ck's 

 figure, about natural size. 



5. G, crucirtum, N, E, Br, in The Gardeners' Chronicle, 1922, 

 Vol, LX^CI, n, 9 (Fig. 188). — Leaves usuallj'' pointing four v.^ys, 

 from, the f»airs obliquely crossing one another, 2>--3 inches long, 

 7-8 lines broad, dilating to 1 inch broad at the very base, curved 



