84 Bulletin 313 



nidia central, black, 5-7 ^ ; spore mass pink to flesh-colored, conidia 

 oblong, slightly constricted at septum, 12-16 x 4-6 fx.. 



481. Infected stem and leaves. 482. Infected pod. 483. Pycnidinm, 2/3. 

 484. Spores, 1/12. 485. Germinating spores, 1/12. 



AscocHYTA vici^* Lib. — On the leaves of Vicia. Causes leaf 

 spots. Spots circular, reddish to orange red, margins elevated. 

 Pycnidia minute-clustered, black, 90-100 ^; spores oblong, obtuse, 

 12-15 X 4-5 fj., exuding in white mass. 



486. Infected leaflets and fruit pod of cultivated vetch. 487. Pycnidia, 2/3. 

 488. Spores, 1/12. 



Darluca filum (Biv.) Cast. ^ — On Uredinia sori. Pycnidia 

 grouped, small conical to globose, ostiolate, dark, spores oblong 

 fusoid, straight, 1 -septate, usually slightly constricted, hyaline. 



489. Pycnidia in sorus of Puccinia sp., 2/3. 490. Cross-section of leaf show- 

 ing pycnidium in sorus, 2/3. 491. Pycnidium removed from host, 2/3. 492. 

 Spores, 1/12. 



AcTiNONEMA Ros^ (Lib.) Fr. (= Diplocarpon rosce Wolf, page 

 34). — On the leaves of the rose. Causes black spots of irregular 

 sizes and with radiating boundaries, frequently confluent and some- 

 times covering the entire leaf ; pycnidia black, scattered or grouped ; 

 conidiophores short ; conidia 2-celled, constricted, 18-20 x 5 /i. 



493. Infected rose leaf. 494. Acervuli, 2/3. 495. Cross-section of same, 

 1/12. 496. Spores, 1/12. 



Note. — The apparent radiating hyphse are in reality wrinkles on 

 the cuticle. .Therefore, this species should be placed in the genus 

 Marsonina (Marsonia), Diedicke, H. — Die Abteilung Hyalodidymse 

 der Sphaerioideen. In Ann. Mycol., v. 10, 135-152 (1912). 



DiPLODiA longispora C. & E. — On the twigs of Quercus coccinea, 

 Q. prinus, Q. alba and Castanea dentata. Causes cankers, a blighting 

 and death of the infested parts. Pycnidia grouped, partly immersed, 

 globose to sub-globose, ostiolate, dark-brown or black, 95-145 /x; 

 spores oval or ovoid, often slightly smaller at one end, 1-septate, 

 hyaline to yellow or dark-brown, depending on age, 29-35 x 7-11 /x. 



497. Pycnidia rupturing epidermis, 2/3. 498. Pycnidium and emerging 

 spores, 2/3. 499. Conidiophores and im.matiu-e spores in various stages of de- 

 velopment, 1/12. 500. Immature spores, 1/12. 501. Mature spores, 1/12. 



■■^Probably the same as Ascochyta pisi [Stone, R. E.— The Life Histor\' of 

 Ascochyta on some Leguminous Plants. In Ann. Mycol. v. 10, p. 564-592 

 (1912).] 



