472 
margin concolorous; hyphae amphigenous but more abundant 
below, cespitose, hyaline, simple, continuous, 10-12X3-3}2 /; 
conidia terminal, ovate-elliptical, uniseptate, scarcely or but 
slightly constricted, hyaline, 15-22X6-9 p. 
Much resembles Ramularia Astragali Ell. & Holw., but is read- 
ily distinguished by its very short, almost obsolete hyphae. ‘The 
Ramutaria referred to is a true Ramularia, the copidia becoming 
finally 2-3-septate. By a mistake of the printer the hyphae in 
Journ. Mycol. 1: 6, are made 8-4 » thick instead of 3-4 /# as — 
they should have been. 
RAMULARIA HELIANTHI E. & E. 
On leaves of Helianthus exilis, Jackson, Amador Co., Calif, 
1896. (Geo. Hansen, no. 1505.) 
Hypophyllous on reddish- or yellowish-brown spots 2-3 mm. 
diam., often subconfluent, prominent below on account of the 
thickening of the substance of the leaf; hyphae subfasciculate, 
short, 10-15X3, toothed above; conidia oblong-fusoid, or the 
shorter ones obovate, hyaline, 2-3-nucleate, subcatenulate, 10- 
20X 3-4 ps. 
Allied to R. Heraclet. 
RAMULARIA LopHantal E. & E. 
On leaves of Lophanthus scrophulanaefolius, Yosemite, Calif., 
June, 1895. ( Davis, no. Q511.) 
Spots amphigenous, irregular, subangular and partly limited 
by the veinlets, rusty brown above, paler beneath, subconfluent, 
definite, 3-5 mm. diam.; hyphae amphigenous, but more abun- 
dant below, cespitose, simple, continuous, hyaline, 20-30% 3 /4s 
toothed or sublobate at the apex; conidia oblong-elliptical, or 
fusoid-oblong, 15—30X5-7 4, hyaline, continuous or uniseptate. 
Has the general aspect of Peronospora sordida. 
. 
CLASTERISPORIUM SIGMOIDEUM E. & E. 
On dead limbs of Castanea, Nuttallburg, West Va., March, 
1896. (L.W. Nuttall, no. 8109. ) 
Hyphae effused, crooked, septate at intervals of about 15/4 _ 
forming an olive-black stratum on the bark for many cm. in €X" 
tent, subcespitose, 300-4006-7 »; conidia broad-fusoid, sigmoid — 
(ends curved in opposite directions ), 4-( exceptionally 5-) septate 
and slightly constricted at the septa, intermediate cells brown, end = 
cells hyaline, 40-70% 12-15 /, mostly subtruncate above. 
