181 



425. Phoma Pittospori, Cooke § Hark. 



Pbomopsis Pittospori, Grove. 



Pycnidia gregarious, subglobose, obtuse, black, pierced by a 

 round pore, covered, then disclosed as to the upper third, about 

 200 /x diam. A-spores, fusoid or lanceolate, acute at the ends, 

 biguttulate, 6-8 x 15 ;i ; sporophores subulate, up to 20 x 1*5 

 p. : B-spores filiform, curved, hamate, or flexuous, 18-20 x 1 /x; 

 sporophores conical, very short. (Fig. 3). 



^ 



P. Pittospori. 



On twigs of Pittosporuvi, California (Hark. no. 2294!). 



The two kinds of spores occurred in the same pycnidium, the 

 B-spores most abundantly. The latter resemble closely the 

 sporophores of the A-spores; in situ they can, of course, be dis- 

 tinguished easily, but even when loose the sporophores are recog- 

 nisable by the subulate base, which often contains vacuoles and 

 tapers distinctly upwards. The pycnidium is not in the 

 slightest degree papillate, but verv obtuse, and ultimately the 

 upper part of it i<s laid bare. 



433. Phoma padina, Sacc. 



Phomopsis padina, Died. I.e. ix. 264. 



Under the name " Phoma palina" there is in the Herbarium 

 a specimen " on dead branches of Padus " (Koum. Fung. Gall. 

 sel. no. 493 !), which is stated on the label to be Sphaeria paliiia, 

 Fr. Syst. Myc. ii. 494. But there is evidently a confusion here 

 between S. palina and S. padina, which both occur on the same 

 page of Fries. On examination the specimen turns out to be 

 possibly the same fungus as Septomyxa padina, Allesch. in Ber. 



Bayer/Bot. GeselL 1892, ii. 6 (Sacc. Syll. xi. 573), though the 



spores are slightly longer and more acute at the ends than the 

 description states. But in Eoumesruere's exsiccatum there are 

 true pvenidia (which do not exist in Septomiixa), scattered, sub- 

 conical, erumpent, at length nearly free. In these were three 

 kinds of spores : 



A-spores, fusoid, 7-9 x 2*5-3 p., on rod-shaped sporophores 

 as long as or occasionally longer than the spore. 



B-spores, filiform, hooked, 25-30 x 06-0-7 /x, on rod- 

 shaped sporophores about' 15 x 2 jx. 



C-spores, fusoid, acute at both ends, curved, at length 



