PENICILLIUM. 301 



Penicillium hypomycetis. Sacc. 



Effused, white, fertile threads erect, septate, 2-3 times 

 forked at the apex, branches short, erect, the terminal ones 

 bearing short chains of elliptical conidia, 3-4 X 2 /x. 



Penicillium hyphomyceiis, Sacc, SylL, n. 382. 



Described and figured as the conidial stage of Hypomyces 

 aiireo-nitens, Tub, in Grevillea, vol. xi. p. 49, t. 150, 

 figs, c, d. 



On Stereum hirsutum, accompanying the ascigerous condition 

 of Hypomyces aureo-intens. 



Allied to P. candidum, differing in the greater regularity of 

 branching, and elliptical conidia. 



Penicillium subtile. Berk. 



Very minute, snow-white ; mycelium very delicate, 

 creeping ; fertile hyphae erect, simple or ternately divided ; 

 conidia in short chains, broadly elliptical, apiculate at both 

 ends, 20 x 8-10 fx. 



Penicillium subtile^ Berk., Ann. Nat. Hist., n. 241, t. xiv. 

 f. 25 ; Sacc, Syll., iv. n. 385. 



In the interior of a dead willow. 



The chains of conidia are few in number; the elliptic 

 form of the conidia is unusual in the genus. 



Var. ramosius, Grove, Journ. Bot. 



Sterile hyphae creeping ; fertile, erect, often ternate at the 

 apex, branched below the apex ; conidia in short chains of 

 4-8, hyaline, broadly elliptical, apiculate at both ends> 

 16-20 X 10 fx. 



On rotten wood. Entirely pure white and very thin and 

 delicate. 



Penicillium megalosporum. B. & Br. 



Pure white, short, hyphae fasciculate, conidia globose or 

 oblong, smooth, 13-15 yu, diameter. 



Penicillium megalosporum^ B. & Br., Ann. Nat. Hist. 1875, 

 p. 34, n. 1457 ; Sacc, Sylh, iv. n. 386. 



In an old chicken-coop. 



There is no specimen of the present species in Berkeley's, 

 herbarium, consequently I cannot supplement the original 

 meagre description. 



