253 My flo\«;erinfi; plant of this species has only two growths upon 

 It, each vdth one flower. The first tlo\"er v/as of a decided pink- 

 ish-mauve tinge and the second almost pure v.'hite. Then the first 

 flower, howeve-", expanded during very dull, sunless weather, v/hile 

 the second one had several days of bright sunshine upon it, so 

 that it is TDOssible that the change in the amount of light was the 

 cause of the change in colour, ^^y only other plant did not develop 

 its flowers. 



Fig. 128 represents at A^ one of the two growths on the plant. 

 B, a mature flower-bud nearly reedy to open, showing the prominent 

 chin-like base of one of the calyx-lobes. G^ p flov:er as it ap- 

 peared in dull v/eather; in bright sunshine the petals and shorter 

 cal3nc-lobes are much more sr^reading, although the larger calyx- 

 lobes remain in the position I have represented, ^, a longitudinal 

 section through the flower, showing its structure, enlarged slight- 

 ly more than two diameters (all the other figures are of natural 

 size). E, a longitudinal section through a ripe fruit showing 

 that the ovary in ripening becomes half inferior. Probably this 

 is due to the enormous shrinkage of the central watery tissue of the 

 pedicel that takes r>lace during the ripening. ^, is a young seed- 

 line", showing the united cotyledons and the first pair of leaves, 

 which are minutely puberuloi^s. 



N. E, Brown 

 (To be continued, ) 



Iv!ESSMBRYANTHm?mi . 

 Gard. Ghron. HI, 81: 430. 1927. 

 (Continued from page 253.) 



430 5.— GIB3AEIM, HAW. 



The following matter relating to this genus is additional to 

 that already nublished in The Gardeners' Chronicle, and brings our 

 knovrledge of it up to date. 



G. album var. roseum, N. E. br,— Besides the typical form 

 with pure white flov-ers described in The Gf,rdenrs' Chronical, 1926, 

 vol. IXXIX, T>. 215, ^"'ig. 105, c. and G. ^ Dp. Kuir has discovered 

 a more robust form which has flowers varying "from pale to very 

 d^e^ rink," to v:hich the above var:'etal name may be given. But some 

 plants of the same robust form have pure white flov/ers. 



Riversdale I^ivisonJ In the Klein ^aroo, Muir, 3975. 



G. angulipes, N.E.Br, __ Stems procximbent or decumbent, with 

 very numerous growths or short branchlets crowded into a compact 

 mass of a silvery or greyish colour. Each growth in nature formed 

 of two uneoual leaves united for about 3 lines at the base, with 

 the free Dart of the larger leaf f-1 inch long, and of the smeller 

 leaf 4-10 lines long, 4-5 lines broad and 2-3^- lines thick near the 

 base, sllerhtly flattened-subterete or trlgonous-subterete, the 

 larger leaf being less convex on the face than the smaller one, and 

 its edi^es rather more distinct, sometimes slightly keeled on the 

 back at the anical part, apex obtuse or bluntly pointed; surface 

 smooth, velvety to the touch from being covered with a very minute, 

 hoary, adriressed pubescence, the hairs pointing dov;nwards; when at 

 rest naturally the leaves are pressed together, but when growing 



