443 



no. 789 !) yielded various irregular spores, but none like those 

 described. Berkeley sketched some " spores ,? on tbe sheet, it is 

 true, from which the account may be taken, but they do not look 

 like real spores, and in the absence of all knowledge of the host 

 the fungus can never be recognised again. 



853, Phoma minutissima, Cooke. 



H 



This specimen, on leaves of Liatris odoratissima. South Caro- 

 lina (Ravenel, no. 1920!), consists of a dematioid mycelium, 

 chiefly on the upper side of the leaf, forming greyish-black 

 oblong or oval patches, 10-11 mm. across, often confluent into 

 large irregular blotches and dotted over with innumerable little 

 black lumps of mycelium which are the beginnings of pycnidia 

 or perithecia, but in which no spores could be found anywhere, 

 although there is ample material. It cannot be recognised unless 

 one should find it again, with the same external facies and on 

 the same host, in a more advanced state. Meanwhile, if it is 

 worth keeping in memory, Aster own Liatridis B. & C. is the 



correct name : it is certainlv no Phoma. 



861. Phoma Vioiae, Westd. 



The pycnidia in Westd. Crypt. Belg. no. 525 ! on examination 

 are seen to be situated in sori of Puccinia Vioiae containing both 

 uredo and teleutospores. They have exactly the same structure 

 and texture as Darluca Filwn, Cast., but produced no real spores, 

 though the contents appear to be what Westendorp described as 

 " spores ." The fungus is evidently the Darluca, immature, and 

 with the cavity filled witli subsclerotioid tissue. 



895. Phoma arctica, Sacc. 



Sphaeropsis arctica, Berk. & Curt, in Proc. Anier. Acad. Arts, 



Sci. iv. 1858, p. 125, no. 124. 



Pycnidia few, scattered, erumpent, convex, black, irregular in 

 shape, often compressed. Spores numerous, fusoid, acute at both 

 ends, hyaline, often biguttulate, straight in front view, curved 

 and narrower in profile, 10-12*5 x 1-2 /*; sporophores straight, 

 linear, hyaline, 7-8 /j. long. 



On outer surface of cone-senles of Picea ajanensis, Fisch. ex 

 Trautvetter & Meyer. Kamtchatka (Herb. Berk.). The host 

 was wrongly given in the original description as " Pinus 

 ajanensis." 



Neither a true Phoma, nor a Phomopsis. Pycnidia! wall 



minutely parenchymatous, opening in the upper half. It is most 



x likely that this is a form or variety of Sporonema strobilimtm, 



f Desm., the spores being very similar to those of that species. 



But the material is too small in quantity for perfect certainty. 



903. Phoma brunneotincta, Berk. § Curt. 



Berkeley gave the name Phoma brunneotincta to specimens in 

 his herbarium on a Sweet Chestnut (Castanea) from $"ew England. 



gave tne same name 



r 



Hors 



ft 2 



