80 timn of stpnens 2|— 3-1 lines lonp;, v^hite v.-ith yellov; anthers. -op 

 of the overy flat. -tyle absent; stigmas 5, filiforhi, revolute 

 at the tir»s, light yellow. — M. damaranum, N.S.Bp.^ in Journ. I-inn. 

 3oc. ■Bot.", vol, '45, p. 67. 



"^smnreland, locality and collector unknown. 



I received specimens of this plant some years ago without 

 information, exce-^t that the3'- cpme frori ^aiaeraland. Subsequently 

 some rlants were sent to me from Oraaruru and Aus and arrived in a 

 very shrive!' led condition, so thct I mistook them for the same 

 species as the above, and, therefore, wronglj'- mentioned those pla- 

 ces 8s localities for I'-, demarenum, in the journal above quoted. 

 The Oniaruru plant died without rooting, b\it I believe it to have 

 been the same as that from Aus, v/hich, now that I have it in plump 

 condition, proves to be quite distinct from L, damarana, and is 

 described pbove as L. bella. I am under the impression that Irof . 

 Pearson sent ^. damarana to Kew among the relents he collected on the 

 n-re^.'t K'erpsberg Hange, and that it died, but I have no note to 

 th?t e-f'fect and m&j be mistaken. N. S. Brov/n 



(To be continued.) 



l'esembr^''anthemumi and some new genera separated from it. 

 Gard. Ghron. HI. 71 : 92. 1922. 

 (Continued from page 80,) 



■ Argi'^roderne. , "-^.■^. Bp. 



92 Stenless succulent plants. 3c en plcnt or growth with two 

 or (v/hen a new pair i*!" forming) four (rarely six) short, thick, 

 ascending spreading leaves, united for about half their length at 

 the base, flpt above, very convex on the beck, and sometli.ies v/ith 

 the dorsal part prolonged beyond the flct face and very obtusely 

 rounded; with or without a faint keel; verj'- firm or hard in sub- 

 stance, v/ith a very smooth white or greenish-v/hite (or rarely 

 rosy-tinted) skin, without dots or markings. Calyx produced fbove 

 the ovary into a short tube, 6-lobed. -Petals numerous, free. 

 3tprr'ens ver^'' numerous, erect, arranged in a dense ring at the base 

 of the petals, Stigme sessile on the top of the ovary, circular, 

 entire or faintly crenate. Ovar^r inferior, 10-24 celled. Capsule 

 10-2<! valved. Seeds nume^^ous in each cell. 



This genus is distinguished from all its allies by its ses- 

 sile entire stigma., and the very smooth white skin of the short 

 broad leaves, the latter characters serving to distinguish these 

 plants at a glance v.'hen out of flov'/er. The generic name is deriv- 

 ed -^rom the words argyros, silver, and derma, skin, 



"^erp-er associates the type of this ^enus (j^. testiculare) 

 with I-'esembrvanthemum Bolusii, but in the nature of the leaves and 

 structure 



93 of the flov-^ers the two nls nts are entirely different. 



The srecies of this genus are easy to diseriiTiinate at sight 

 v'hen seen grov/ing together, yet I find it very difficult to define 

 them in words so th^t they cen be determined from description, es- 

 T^ecially as I have seen flowers of only two species. Thei'' are 

 not difficult to cultivate if properlv attended to and not over- 

 watered, Lik^ most of their allies they attempt to grow and flov/ 

 er between October end --arch, vrhich is their summer see son in 

 their native country; durinr this period the rrinfall of that 

 rec:' on "i-ekes r^l^ce, so that under cultivation it is necessary to 



