168 NEW OR NOTEWORTHY FUNGI. 



simplicibus v. pancis ramis longiusculis alternis subpatentibus 

 instructis ; conidiorum cateniilis curtis, pateutibus, secundum 

 ramos et prope apicem stipitis spicatis, oppositis v. verticillatis ; 

 conidiis in catenula quaque teniis v. quaternis, diplococcoideis 

 (li. e. oblongis, ad septum constrictis) olivaceo-pellucidis, 9-10 ju, x 

 4i-5 ix. (Tab. 257, fig. 7). 



In ligno putrido, " Sutton " (Wk.), Oct. Etiam in peritheciis 

 socife Ceratostomclhg vestita; Sacc, cujus pilos stipites steriles 

 imitantur, et cujus status conidicus videtur. LlipJuHpuiio nit/rcscenti 

 Link (Sp. PI. i. 04) subsimile, at Cladotrichu stricto Sacc. affinius. 

 Hoc immo, auctore ipso mouente, Diplococcio adscribenduni, 



70. Helmintliospormm, ci/lindricwn Corda, Sturm, xi. 21, pi. 11 

 (1831); Fries, Syst. Myc. lii. 357 (1832); Eab. Krypt. Fl. p. 109 

 (1844); Sacc. Fung. Ital. 829 (1881). 



Efi'used, broAvn, velvety. Hypbae long, simple, slender, acute, 

 straight, black, opaque ; conidia narrow, cylindrical, acute or 

 obtuse, 3-4-septate, diaphanous. 



On dead hazel, AVitton (Wk.), March. My specimens differ 

 from Corda's description and figure in some respects, but resemble 

 closely that of Saccardo. The hypliae are shorter and semipellucid, 

 the septa being plainly visible ; conidia 20-30 /x x 3-4 {jl, of exactly 

 the same width as the flocci, and 3-8-septate, septa indistinct. 

 Saccardo gives the size as 14-15 /x x 2^ n, and figures one spore 

 with about six septa. 



71. Hclminthosporiwn incnnspicuum C. & E., Grevillea, vi. 88, 

 pi. 99, fig. 19 (1878). Var. britannicum mihi. 



Effusum, brunneolum ; hyphis subflexuosis, vix nodulosis, 4-5- 

 septatis, pallide brunneis, 160-180 /x x 10 /x ; conidiis oblongis, 

 diaphanis, endochromate brunneolo diviso, dein 3-5-septatia, 

 60-100 p X 18-22 /x. 



In foliis languidis gramineis, " Salford Priors" (Wk.), Aug. 

 A typo differt hyphis brevioribus, conidiis obtusis, et eo quod oculo 

 inarmato non omnino inconspicuum ; ab H. tcreti Sacc. (Fung. 

 Ital. 833), quocum conidia figura perfecte congruunt, macularum 

 defectu, conidiis non obscure olivaceis. Inter hoc ac illud medium. 



72. Acrothecium tenebrosiivi Sacc, Mich. i. 74 (1877); Fung. 

 Ital. 6 a (1877). — Cacumisporium tenchrosum Preuss, Sturm. 35, 

 p. 117, pi. 59 (1861) ; Bon. Handb. p. 285 (1851). 



Tufts broad, black; flocci erect, septate, simple, black-brown, 

 thickened below, pallid above, 200 /x x 5-6 /x ; conidia clustered at 

 the apex, large, oblong, rounded at each end, curved, sub- 

 diaphanous, broAvn, 3-septate, 18-20 /'. x 5-6 /x. (Tab. 256, fig. 7). 



On dead wood, Keuilworth ; Sutton (Wk.), July, December. 

 Spores at first hyaline, guttulate, then pale brown, immersed in a 

 little mucus. It does not difler much from IhbinntJuisporiuni 

 apicdir B. & Br., except in the more numerous and uniformly- 

 coloured spores. 



73. Pachnocybe clavulata, n. sp. — Stipite erecto, rigido, 

 filiformi, nitido, fusco, infra deuigratt) ; capitulo stipitem tequante 



