450 rilr^nts, in The '^•Frdeners* Chronicle, 1922, vol. LiKII, p. 124 v/cs 

 in type (but not published) that I res informed by i-^r. G. 3chv;&nted 

 thr-t he hgd pub? is he. "l several species in the ^^onatsschrift fur 

 JlekteenT-'unde efter the w?r, and he very Icindly sent me copies of 

 his •'T^-'-'cles, for no copies of this vrark published after the v/cr 

 be- • , ■ -^s contained in the Kev Library until the spring of 1922, 

 lonp- ^-""ter my account of the genus ves in type, so that until then 

 I vTiS quite unav/are that an^" other species had been published 

 belons'inp' to the gtouds I ?iave dealt with, other than those I have 

 enn.^nerated. As some of ^-r. '^chv/antes ' naiaes v/ere published at an 

 earlier date than my ov;n, a fev/ changes of nomenclature rre neces- 

 s'=r'"'. These changes I have made in the follov/ing enumeration, 

 and have also added some further references, as v.-ell as descrip- 

 tions of th'^' -0--.1S up-to date. The species are arranged alphabet- 

 ically for lience of reference, but numbers are added to in- 

 dicate their position in the arrangement adopted in ray previous 

 account of the genus. 



Althoup'h several nevr species have been described by German 

 authors, they do not reco?Tnise this genus as distinct from I'-^esem- 

 brvanthemum, nor '"o -^hev describe the structure of the flov/ers and 

 fruit. 



In the correspondence about these plants some ^'.Titers have 

 mentioned that the su?'face of many of these plants when viewed 

 '.vith a strong lens is seen to be covered with minute v/hitish dots, 

 ^•"hich T have not mentioned in ray descri^'tions. The reason T have 

 not done so is because these minute specks ere the stoma ta of the 

 plants, which it is unnecessary to mention. 



Those who are interested in the micro spo]-is structure of 

 pl'^-nt^ .=■! T ■• ^■^v,.-' ^V\e epidermis of these species very interesting to 

 study. 



As stated in The G-o^deners' '-'hronicle, vol. LavLIj . p. 198, 

 these plants ere wantlnp- ir •"■^-^-icters th? t can be set.dov;n in 

 vrriting in definite terms, re, therefore, scarcely to be iden- 

 tifier' "''rom descriptions alone, end, unfortunately, owing to the 

 i'^lness of my daughter, I am no longer able to illustrate these 

 articles bv the aid of her excellent photographs, that often had to 

 be made bet'-een 8 and 10 p.m., b' gaslight, as many species only 

 fully expand their flowers at night. But as an aid to the identifi- 

 cation of the n^w species I have seen, "^ have indicated under each 

 o^ the t^^pe of form assumed b" the grov/ths vvhen viev^ed sidev'7a3''s, 

 ^s indicated in the outline sections (^ig. 18?) reproduced from my 

 ''ormer article in The Gardeners ' -"hronicle, vol. LiCCI, , p. 214. 



The di-fficu.ltv of naming these plants correctly is very great, 

 as is clearly evidenced by the fact that at the horticultural shov/s 

 where I have seen them exhibited, I have noticed that the names are 

 rarely correct, and continental nurserymen are selling some species 

 V7D th my names attached to them that are b y no means correct. 

 As for an examrle, I have seen a plant bought from a continental 

 dealer as being "■>. pictur/i, i''. ^. -^r., " v;hich it_^certainly is not, 

 but appears to be S. signatum, '^h^'. -^r. -pother ^ have seen bears 

 the name "C cibdelum K.^I.Bp. In the first place, it is a mystery 

 to me how the dealer could have possibly obtained this name, for 

 it h^s hitherto remained unpublished, existing only in my own man- 

 uscript, and I have never distributed any portion of my plant ar 

 far as T am aware, under that name, nor have I so named a plant for 

 another person. Secondly, the plant sold under the name ". cibdelum" 

 is not at all like the plant I have so named, and which v;ill be 

 found described below. I possess the plant, and think it probable 



