Phoma.] 



FUNGI. 283 



who has paid particular attention to the genus, and made it appear all 

 but certain that the specimens figured by Dr. Greville were mixed with 

 Sph. macuUformis (S. cedema, Moug. & Nest. ! n. 880.) and that the 

 anaUsis, as far as the section and perithecia are concerned, belongs to 

 that species. 



6. C. imlverdcea^ Berk, {mealy Cytispora) ; growing on either 

 side of the leaf, disc pulverulent, cells subtriangular circinating, 

 sporidia while. 



On leaves of Viburnum Timis. May. Apethorpe, Norths., Bev. 

 M. J. Berkeley.— h very distinct and singular species, and though 

 growing on leaves, a true Cytispora. The cells are disposed like the 

 carpella of an orange ; I have not seen their contents discharged, but 

 they are white and consist of minute oblong sporidia as in other 

 Cytisjwrce. 



GO. Ceuthospor.a. Fr. Ceutbospora. 



Stroma innate, containing one or more nuclei; Sjioridia 

 minute, escaping from the dissolving nucleus — Name from 

 xsu^w, to conceal and tf-ro^o^, a seed, 



1. C. pliacidioides, Grev. (Plmcidiuni-like Ceiitfiospora) ; stroma 

 containing 3 — 5 cells orbicular plane black shining penetrat- 

 ing the matrix splitting into 3 — 5 plane short lacinise. Grev. ! 

 Sc. Crypt. Fl. t. 253. — Phacidiiun multivalve, Fr. Syst. Myc. v. 

 2. p. 576. Moug. ^ Nest! n. 560. — Xyloma midtivalve^ Dec. 

 Mem. du 3Ius. v. 2. p. 324. t. S.f. 8.— /S. bifrons, Soiv. ! t. 326. 

 Purt. V. 2 ^- 3. n. 1103. — Cryptospliceria? hifronsy Grev. FL 

 Ed. p. 361. 



On the leaves and young shoots of Holly. Common. — It seems to 

 me scarcely correct to consider the black spots as pc7-it/iecia ; they 

 appear rather to be a common stroma or receptacle to the cells. 

 Indeed there seems no sufficient ground for considering the genus 

 distinct from Phoma. 



2. C. Lduri, Sow. (^Cherry-laurel Ccuthosj^ora) ; unilocular 

 brownish-black obtusely conic splitting into 3 — 4 acute erect 

 lacinise. Grev. ! Sc. Crypt. Fl. t. 254. — Sph. Lauri, Sow. ! f, 

 371./. 4.—S. Hederce, (3. Lauri, Fr. Syst. Myc. v. 2. p. 521. 



On dead leaves of Pnuius Lauro-ccrasus (not Laurus nobilis as is 

 stated by Dr. Greville). Not so common as the foregoing s|)ecies ; 

 like that growing sometimes on the shoots of the foregoing summer. — 

 Stroma as in the last, opening occasionally on either side. This must 

 not be confounded with Phacidium Lauro-cerasi. 



61. PiioMA. Fr. Plioma. 

 Perithecium obsolete ; nucleus griunons, inchuled in a tuber- 

 cle formed from the matrix ; sporidia thrown out irregularly 

 from the simple ostiolum. — "Named from ^oj, a pustule." 



1. P. salifjnum, Ehr. {Willow-Uaf Phoma) ; uui-ninllilocular 

 convex brown-black hubumbonate in the centre. /V. Sy.^t. Myc. 

 V. 2. p. 546. Sclcr. Sued n. 283. — Sph. salicina, Soio. ! t. 372. 



