66 Bulletin 313 



spots, which become grayish with reddish borders at maturity, about 

 3-10 mm. in diameter. Pycnidia grouped or scattered, globcse- 

 lenticular, ohve-black, erumpent; conidia hyaline, oval or ovate to 

 oblong, granular, 14-16 x 5.5-6.5 fi. 



337. Infected leaf of Smilacina racemosa. 338. Pycnidium, 2/3. 339. Spores, 

 1/12. 



Phyllosticta grossulari^ Sacc. — On the leaves of the goose- 

 ber^\^ Causes more or less circular, dry, grayish-white spots with 

 darker margins. P3xnidia scattered; conidia ovoid or ellipsoid, 

 hyaline, 5-6 x 3 /x. 



340. Infected leaf of Grossularia sp. 341. Pycnidium, 2/3. 342. Spores, 

 1/12. 



Phyllosticta halstedii E. & E. — On living leaves of Syringa 

 vulgaris. Causes reddish spots between larger veins, becoming 

 brown and wrinkled. Spots on both surfaces of the leaves % to 

 154 cm. in diameter and with definite narrow dark border. P>x- 

 nidia on both sides of leaf, few, lenticular, 100-150 /» in diameter, 

 spores broad, fusoid-oblong, straight, granular, rounded at the ends, 

 15-20 X 5-7 fx. 



343. Part of infected leaf of Syringa vulgaris. 344. Pycnidium, 2/3. 345. 

 Spores, 1/12 from two sources. 346. Germinating spores, 1/12. 



Phyllosticta hibisci Peck. — On leaves of Hibiscus moscha- 

 tus var. crimsoni. Causes oval, circular or irregular, ashy-gray 

 spots with narrow inner black and broad outer reddish borders, 

 about 4-8 mm. in diameter. Pycnidia on the upper surface of the 

 leaf, erumpent, ostiolate, brown to black, conidiophcres single or 

 branched, 10-20 /x long; spores oblong, oval, irregular, sometimes 

 slightly curved, 1-2 guttulate, 7.5-10 x 3-4 fi. 



347. Portion of infected leaf of Hibiscus moschatus. 348. Spores, 1/12. 



Phyllosticta hortorum Speg. — On the eggplant. (See Pho- 

 mopsis vexans (Sacc. & Syd.) Harter, page 74.) 



Phyllosticta labrusc^ Thiim. — (See Guignardia hidwclli, 

 page 44.) 



Phyllosticta maculicola Hals. — On the leaves of Dracccna 

 termhialis and other species of Dracccna. Causes small, brown, 

 ovate, somewhat angular spots with yellowish borders. P>-cnidia 

 borne on both surfaces, ostiolate, black and about 32.5 ^L in diameter ; 

 spores ovate-oblong, frequently cur\xd, hyaline. 



349. Infected leaf of Dracaena terminalis. 350. Pycnidium. 351. Spores, 

 1/12. 



