Tas. 8872. 
MESEMBRYANTHEMUM picHRovum. 
South Africa. 
Ficomwear. Tribe MESEMBRYEAE. 
MesemMBRYANTHEMUM, Linn.; Benth, et Hook. f. Gen. Plant. vol. i. p. 853. 
Mesembryanthemum (§ Calamaformia) dichroum, Rolfe; species novae grege _ 
Calamiformium foliis triquetris et petalis dichrois facile distinguendum. 
Herba breviter caulescens. Caules simplices vel parce ramosi, suberecti, 
8-9 cm. longi. Folia 4-6, patentia, lineari-oblonga, acuta, triquetra, 
crassa, supra concava, subtus obtuse carinata, glauca, crebre et minute 
puncticulata, 4-6 cm. longa, 0°6-0°9 cm. lata, margine minutissime denti- 
culata. lores subsessiles, expansi 3°5-4 cm. diametro, albo-rosei. Calyx 
late campanulatus; lobi deltoideo-ovati, acuti. Petala numerosissima, 
patentia, circiter 1-8 cm. longa, basi alba, apice rosea. Stamina numerosa, 
erecta, circiter 1°5 cm. longa; filamenta albidula, infra medium villosa ; 
antherae ovato-oblongae, obtusae, flavae. Stigmata 6, subclavata, brevia. 
—hK. A. Roure. 
This distinct and striking Mesembryanthemwn was 
presented to Kew in 1910 along with various other 
_ succulent plants by Mr. G. H. Simpson Hayward, Icomb 
Place, Stoke-on-the-Wold. It has thriven satisfactorily 
under the treatment given to other species of the genus 
in a warm greenhouse, where it flowered in November, 
1918, when our figure was prepared. Beyond the fact 
that it is South African nothing is known of its history, 
for there is no record of the district in which it was 
collected, and no very near affinity can be found or 
claimed for this species, which is new alike to horti- 
culture and to science. In most respects M. dichroum 
accords with the members of the section Calamiformia, 
though it is at once distinguishable from all of these 
by having distinctly triquetrous in place of subterete 
leaves and in having petals with bright pink apices. 
It appears on the whole more satisfactory to include our 
plant provisionally among the Calamiformia, though as a 
somewhat anomalous member of the section, than to 
regard it as the type of a distinct section, though this 
OcroBER—DECEMBER, 1920. ; 
