British Clavariae. A. D. Cotton & E. M. Wakefield. 185 



2. Plants solitary or in small groups, 

 {a) Plants white, 



20. C. ACUTA Fr., Syst. Myc. i. p. 485; Cotton in Trans. 



Brit. Myc. Soc. iii. 1907, p. 31. 



C. acuta Sow., Col. Fig. tab. 333 ; ? C.falcata Pers., Comment, 

 p. 81, tab. I, fig. 3. 



Illustrations: Sowerby, loc. cit. 



Plants imbranched, solitary or in small groups, 3-7 cm. 

 high, glistening white; smell none, taste distinct, pleasant. 

 Clubs slender, about 2-3 mm. wide, cylindrical or compressed, 

 smooth, becoming hollow, very brittle, apex acute or obtuse. 

 Stem more or less distinct from the club, variable in length, 

 1-2 cm., white. Internal structure of frequently septate hyphac, 

 running parallel to the long axis of the club, 5-12 (-30) /x in 

 diameter, average lOjit, pseudoparenchymatous in transverse 

 section. Basidia conspicuous, small, 30-35 x 7-8/u, contents 

 granular; sterigmata 2-4, slightly divergent. Spores sub- 

 globose, smooth, hyaline, minutely apiculate, 7-10 x 6-g/x 

 (average 8-9 x 7-8 /x), contents granular, guttulate when 

 young. 



Habitat. Amongst grass in woods, on shady lawns, etc., 

 and often on the soil of plant pots in greenhouses. Not common. 



Clavaria acuta has probably often been referred to C.'fragilis, 

 which is however in part a synonym of C. vermicularis. This 

 species is distinguished from C. vermicularis by its solitary 

 habit of growth, distinct stem, and large spores. Its frequent 

 occurrence in greenhouses has been noted by several writers. 



21. C. RUGOSA Fr., Syst. Myc. i. p. 473. 



C. rugosa Bull., Ch. Fr. p. 206, tab. 448, fig. 2; C. damicornis 

 Schrank, Baiersche Flor. ii. 1789, p. 666; C. elcgans Bolt., 

 Hist. Fung. tab. 115 ; C. laciniata Schaeff., Icon. Fung. tab. 291 ; 

 C. canaliculata Fr., Obs. Myc. ii. p. 294; ClaviiUna rugosa 

 Schroet., Pilz. Schles. i. p. 442. 



Illustrations: Bulliard, loc. cit.; Badham, Esc. Fung. tab. 

 15, fig. 4; Berk., Outlines, tab. 18, fig. 3; Bolton, loc. cit.; 

 Cooke, Plain and Easy Ace. Brit. Fung. Ed. i, tab. 17, fig. 3; 

 Ed. iii, tab. 6, fig. 2; Cooke, Brit. Edible Fung. tab. 9, fig. 32; 

 Greville, Scott. Crypt. Flor. tab. 328; Pers., loc. cit.; Sowerby, 

 Col. Fig. tab. 278, lower figs, (as C. coralloides). 



Plants simple or slightly irregularly branched, solitary or 

 gregarious, 5-10 cm. high, white or pallid, rather tough. Clubs 

 thickened upwards, up to i cm. thick, longitudinally wrinkled, 

 solid, apex blunt. Stem not distinct. Internal structure 



