132 
limited, the living part of the leaf bordering the spots narrowly shaded 
with yellow. Perithecia innate, sunk in the parenchyma of the leaf, 
the dark apex barely visible and only very slightly prominent, epipliyl- 
lous, about 150 pi in diameter. Sporules narrowly and acutely elliptical, 
hyaline, continuous, often binucleate, 15-20x6-7 pi. 
Sph^eropsis albescens, n. sp .—On dead limbs of Negundo acero - 
ides. Brookings, S. Dak., September, 1891. (T. A. Williams.) Per¬ 
ithecia gregarious, globose, J mm in diameter, buried in the bark, but 
raising the epidermis into little pustules which are barely pierced by 
the papilliform ostiolum. Sporules oblong-elliptical, brown, continu¬ 
ous, obtuse, 15-20x8-10 pi. The perithecia are mostly found around 
the nodes of the smaller limbs, extending for a centimeter or more 
on each side of a bud, and the epidermis over these areas becomes 
whitened out. 
Stagonospora spinacijg, n. sp .—On spinach, Brookings, S. Dak., 
July, 1891. (T. A. Williams.) Spots amphigenous, round, dirty white, 
3—5 mm in diameter, without any very distinct border. Perithecia epi- 
phyllous, erumpent, rough, black, subhemisplierical, 75-100 pi in diam¬ 
eter, with a papilliform ostiolum. Sporules oblong-cylindrical, obtuse, 
often slightly curved, hyaline, 1-3 septate, 15-30x8-10 pi. 
Septoria elymi, n. sp .—On leaves of Elymus Canadensis. London, 
Canada, July, 1891. (Dearness, No. 808.) Perithecia subglobose, 100- 
120 pi in diameter, epiphyllous, mostly on narrow, dirty white spots 3- 
4 mm long by J mm wide, visible as black specks. Sporules clavate-cylin- 
drical, bent or curved, continuous, faintly nucleate, 15-25 xlJ-2 pi. 
Differs from 8. brorni Sacc., in its shorter sporules and narrow, elon- 
gated spots. 
Septoria Jackmani, n. sp .—On leaves of Clematis Jackmani in a hot¬ 
house, Geneva, N. Y., August, 1891. (D. G. Fairchild.) Amphige¬ 
nous. Perithecia large, conic-hemispherical, black, broadly perforated 
above, semi-immersed, the upper half projecting; gregarious on yellow¬ 
ish, indefi nite spots. Sporules, clavate-filiform, 40-70 x 2£-3 pi nucleate, 
but not visibly septate, thicker above, subattenuated below, only mod¬ 
erately curved. This is quite different from 8. Clematidis , Bab., which 
is on definite, brown spots, and has smaller perithecia and smaller spor¬ 
ules. It is much nearer 8. expansa , Niessl., but, besides the different 
host plant, that species is hypophyllous and has narrower (1J-2 pi) spor¬ 
ules. Saccardo in Sylloge gives the sporules as only 1 pi thick, but in 
the specimen in Babenliorst-Win ter Fungi Europaei, 2897, the sporules 
are, as just stated, 1J-2 pi thick. 
Septoria saccharina, n. sp. —On living leaves of seedling maples 
(Acer saccharinum) 1 Niagara, Canada, August, 1891. (Dearness, No. 
1812.) Spots amphigenous, scattered, small, definite, white, more ob¬ 
scure below, l mm in diameter. Perithecia few (J on a spot), epiphyllous, 
lenticular, brown, 200 pi diameter. Sporules clavate-cylindrical, nucleate, 
hyaline, 40-50 x 1J-2 pi. Distinguished from the other acericolous Sep- 
torias by the small, white spots. 
