120 MISSOURI BOTANICAL GARDEN. 
Crercospora STACHYTARPHETAE FE. &E. n. sp. 
On leaves of Stachytarpheta Jamaicensis Vahl. Nas- 
sau. Nov. 1890. 
Spots small, scattered, round, white, with a dark margin, 1-2 mm. 
diam. Hyphae epiphyllous, cespitose, 40-60>< 4”, pale brown, spread- 
ing, undulate, and subgeniculate above, continuous, not effused. Co- 
nidia cylindrical, smoky-hyaline, obtuse, 5-9-septate, 50-65 < 4-5 
Crrcospora Catotroripis E.& E. n. sp. 
On Calotropis procera (Ait.) R. Br. Fortune Island. 
Nov. 1890. 
Spots 4-1 cm. diam., dirty brown, with the margin darker. Hyphae 
not abundant, tufted or spreading, pale, continuous, 15-30 8 #, sub- 
undulate and nearly entire. Conidia cylindrical, yellowish-hyaline, 
30-40 X 3 4, nearly straight. The tufts of hyphae are thickly scattered 
over the spots on both sides of the leaf, and are very minute so as to be 
seen with difficulty without the lens. 
PERONOSPORACEAE. 
(MR. J. B. ELLIS. ) 
Cystopus canpipus (Pers. ) Ley. 
On a mustard ( Cakile maritima Scop?). Nassau. 
Cystorus ConvoLvuLAcEaRuM Speg. 
On Ipomoea Pes-caprae (L.) Sweet. Grand Cayman. 
