185 



same locality, on dry branches of R. Alaternus. But this par- 

 ticular exsiccatum showed nothing but Diplodia clandestina, 



I). & M. Fl. Alg. p. 575 (Sacc. Syll. iii. 333) with spores 

 measuring 25-30 x 10 fx. 



530. Phoma Diospyri, Sacc. 

 Phoma Diospyri, Grove. 



Pycnidia gregarious, immersed at the base among the whitish 

 fibres of the wood, then nearly superficial, oblong, hysteriiform, 

 rough, black, up to 400 fx long. Spores fusoid, acute at both 

 ends, sometimes biguttulate, 8-10 x 2 fx; sporophores crowded, 

 subulate, 12-16 x 2 /x, rising from a yellowish proliferous 

 stratum. 



On bare wood of large branches of Diospyros Lotus, Padua 

 (Sacc, Mycoth. Ven. no. 1209!). 



In Sydow, Mycoth. March, nos. 25841 and 2797! on twigs of 



Diospyros virginiana, from Berlin, the pycnidia are immersed in 

 the bark of younger branches, but the spores and sporophores are 

 the same. 



544. Phoma imperialis, Sacc. 



Phomopsis imperialis, Grove. 



Phoma Paulowniae, Sacc. & Bourn, in Mich. ii. 330 (non 

 Thtim.) 



Pycnidia gregarious, globose-depressed, black, about 300 jx 

 long, covered by the epidermis, which is blackened over and 

 around it and at length pierced by the subpapillate pore. Spores 

 oblong or subfusoid, scarcely acute but usually obtuse at the 

 ends, sometimes biguttulate, 7-8 x 2*5 fx; sporophores subulate, 

 12-15 x 1-5-2 ix. 



On petioles of Paulownia imperialis, France (Eoum. Fung. 



Gall. no. 1018!). 



This is one of those striking species which (if it be known that 

 the spores are continuous and hvaline) can be assigned to 

 Phomopsis at merely a naked-eye view. 



560. Phoma Ailanthi, Sacc. 

 Phomopsis Ailanthi, Trav. I.e. i>. 196. 



Pycnidia gregarious, subglobose, immersed, convex, pustular, 

 black, 330-500 fx diam., long covered by the unchanged epi- 

 dermis which is at length burst at the summit by a small 

 irregular pore. Spores elliptic-fusoid or sublanceolate, acute 

 at both ends, not often biguttulate, 7-8 x 2-2*5 /x; sporophores 

 subulate, straight, 10-15 x 2-2*5 /x. 



On dead branches of Ailanthus glandulosa, New Jersey (Ell. 

 & Ev. N. Anier. Fung. no. 27G7 !). The pyenidium of Diaporthe 



(Chorostate) Ailanthi, Sacc. 



The dimensions of the sporophores, seen in situ, are as given ; 

 the filiform arcuate "basidia," mentioned by Saccardo (25 x 

 0-5 /x), must be the B-spores, but none of these were discovered. 



B 



