July, 1887.] 
SEPTORIAS OF NORTH AMERICA. 
79 
156. Seftoria Xanthii, Desm. Sylloge III, p. 554. 
Spots light brown, round or oblong, 3—5 millim. broad, border yellow- 
green, broad, indefinite; perithecia black, subglobose, few, scattered, 
prominent, epiphyllous, 75—80 P in diameter; sporules hyaline, linear, 
straight or curved, guttulate or obscurely 3-septate, 33—40 x 14 P. On 
leaves of Xantliium Strumarium. Delaware. 
157. Septoria xanthiifolia, E. & K. Am. Nat. XVII, p. 1164; 
Ellis, N. A. F., No. 1123. 
Spots light brown, irregular, scattered, one millim., border indefi¬ 
nite ; perithecia black, minute, slightly prominent, rather numerous, 
epiphyllous, 70 p in diameter ; sporules hyaline, yellowish, linear, slightly 
curved, faintly nucleolate, 20—35 x IF—2 p. On leaves of Iva xanthiifolia. 
Kansas. 
158. Septoria Yucc^e (Schwz.) Sacc. Sylloge III, p. 572. ( Sp/ice - 
via Yuccce-gloriosce , Schwz.) 
“Perithecia globose, innate, covered by the gray, separating epider¬ 
mis, ostiola punctiform ; sporules hyaline, linear, entire, 25—45 ! J - long.” 
On dead leaves of Yucca gloriosa. Pennsylvania. 
159. Septoria Melandrii, Pass. 
Spots amphigenous, orbicular, 2—3 millim. in diameter, yellow rust 
color, becoming whitish and with a darker border, the greater part of 
the leaf becoming rusty yellow ; perithecia innate, opening above, but 
scarcely prominent and easily overlooked ; sporules filiform, nucleolate, 
nearly hyaline, 60—70 x 2 P. On Lychnis vespertina. Racine, Wis., July, 
1886. Dr. J. J. Davis. 
160. Septoria acerella, Sacc. Syll. Ill, p. 479. 
Spots amphigenous, minute, subangular, numerous, white, bordered 
with reddish brown ; perithecia few (1—4) on a spot, black, minute, len¬ 
ticular, visible on bot h sides of the leaf; sporules curved, subcontinuous, 
hyaline, 25—30 x IF—2 P. On Ncgundo aceroides. Missouri. B.T.Galloway. 
161. Septoria caricinella, Sacc. & Roum. 
Spots amphigenous, white, with a rusty-colored border, orbicular or 
subelongated, 2—3 millim. in diameter; perithecia black, lenticular, 
500—150 p in diameter; sporules linear, 45—55 x 1£ P. On leaves of 
Carex ccphaloidia (?). Racine, Wis., July, 1886. Dr. J. J. Davis. 
In the Sylloge, the sporules are said to be 60—70 x H t 1 , but in two 
perithecia examined, on Roumeguere’s specimen in Fungi Gallici, none 
were found over 50 p long. 
162. Septoria polemoniicola, E. & M. On leaves of Polemonium 
reptans. Perryville, Mo., July, 1885. Rev. C. II. Demetrio. 
Spots amphigenous, but more distinct above, small (i—1 millim.), 
white, definite, numerous ; perithecia epiphyllous, minute, sublenticular, 
dark brown, mostly only a few on a spot; sporules filiform, nearly straight, 
yellowish-hyaline, nucleolate, mostly 25—35 x 1 P. The leaves have a 
sickly, yellow look. 
S. Polemonii , Thum., is said to be on “large, pale, ochraceous spots,” 
with sporules 24—30 x 2 p. 
