TWO VAEIETIES OF CALAMAGROSTIS 255 



simplici, debili, panicula laxa. Tota planta tenera. Calyx corollam 

 superans. Valvulse acute longeque mucronatii) ut fere aristatai 

 appareant, albicantes. Pappus longus, copiosus, corollam cingens." 



C. Gaudlniana Reichb. (Fl. Germ. Excurs. 27, 1830) is another 

 synon^aii given by Ascherson & Graebner (/. c.) as equalling ^j^Z/k/^, 

 but the figure in Ic. Germ. i. t. Ixxxii, f. 150 is not very like the 

 Norfolk form, and the original description, given below, indicates that 

 it is a slender delicate plant having a long narrow pale panicle and 

 very acuminate glumes with a smooth awn, and type- specimens in Hb. 

 Mus. Brit, seem to confirm this. However, Dr. Stapf reports that 

 a Lausanne example scarcely differs from var. pallida bej^ond that the 

 glumes are a trifle more pointed and smoother : — 



" O. Gaiuliniana Rchb. ; panicula stricta tenuissima, bracteis 

 acuminatissimis, arista terminali brevissima laevi, pilis bracteola lon- 

 gioribus. A. CalamagrosHs Gaud, e loco a nob. cit. A sequente 

 \_C. lanceolata^ diversissima, gracillima specierum et mollis, tenera, 

 compressibilis, ligula suprema duplo longior et angustior, panicula 

 longissima angustissima pallens, bracteae angustiores, longiores, arista 

 brevior Isevis. — Lausanne au bois de Sauvabelin : v. Charpentier — Jul." 



2. Calamagrostis epigeios Roth, var. i^s^termedia Grecescu. 



Another Reed, gathered in Wanborough Wood, Surrey, in 1896, 

 was determined hj Dr. Stapf as C. epigeios c. intermedia Asch. & 

 Graeb. This is founded upon Aruiido intermedia Gmelin, which 

 Grecescu (Consp. Fl. Roman. 607, 1898) reduced to a variety. 



Gmelin's full description (Fl. Badensis, i. 266, 1805) is here 

 given : — 



" Arundo intermedia cal3"cibus unifloris, panicula patente ovato- 

 lanceolata, culmo stricto simplici .... 



" Differt a praecedenti specie \_A. epigejos\ ; Habitu pra?sertim. 

 Cuhno demissiore quatuor pedali, strictiore, 1-5 articulato, infra 

 paniculam magis aspero. Foliis ex viridi-canescentibus, margine 

 magis retrorsum asperis, secantibus. Panicula fiorente ovato-lanceo- 

 lata, e viridi-canescente. Fedunculis duplo brevioribus, patenti- 

 erectiusculis. Ghimis calycinis canescente-viridibus, margine et apice 

 dilute rubellis, perfecte sequalibus, mucronatis. Corollce valvula 

 exteriore infra dorsi medium semper aristata : Arista longiore. 

 Pappo in basi corollse copioso, calyce sublongiori. 



" Nota. Habitus a pra^cedente et sequente specie [A. Calama- 

 grostis^ quam maxime diversus, dictitat separationem .... 



" Affinis Arundini Leersii f. Calamagrosti Arundo. Roth. fl. 

 germ. 2. p. 88. a qua dift'erre videtur : culmis non binodibus." 



Ascherson & Graebner (Syn. Mittel. FL ii. 215, 1899) give but 

 the following very short desci'iption of their c. intermedia — "Outer- 

 glumes green, with narrow violet border. In similar places as the 

 preceding [b. Ileiclienhacliiana~\.'''' 



It is for monographers of the genus to weigh and calculate the 

 real value of the plants noted above and to decide whether they are 

 stable varieties or, as would appear from a superficial examination, 

 merely colour " states." 



