May, 1887.] 
BOLETI OF THE UNITED STATES. 
53 
53. Seftoria gaurina, E. & Kellerman. Am. Nat. XVII, p. 1,165; 
Ellis, N. A. F., No. 1,133. 
Spots light, dusky brown, rather irregular, border definite, slightly 
raised ; perithecia numerous, brow T n, immersed, 100—140 y in diam., 
visible on both surfaces of the leaves, but expelling the sporulae in white 
threads upon the upper; sporules linear, curved, yellowish, granular, 
continuous or 1—3-septate, 50—75 x 24—3 /L On leaves of Gctura pani- 
jlora. Kansas. 
54. Septoria maculosa, Ger. Bull. Torr. Bot. Club IV, p. 64. 
Spots grey or tawny, subcircular or elongated, three millim. broad ; 
perithecia black, subglobose, innate, prominent, densely clustered in the 
center of the spot, epiphyllous, 84 p- in diam.; sporules hyaline, filiform, 
slightly curved, 25—40x 14 /'-. On leaves of Cupbua viscosissima. New 
Y ork and Pennsylvania. T.his species appears to differ in the arrange¬ 
ment of the perithecia and in the size and appearance of the sporules 
from S. maculosa , Lev.; Sylloge III, p. 513. 
(To be continued.) 
NOTES ON THE BOEETI OF THE UNITED 
STATES. 
BY CHAS. H. PECK. 
Fries, in Hymenomycetes Europcei, gives descriptions of ninety species 
of Boleti and adds, in an appendix, the diagnoses of ten more whose 
affinities are doubtful. ’Almost as many species have been recorded for 
this country, and probably when they shall have been as thoroughly 
collected and studied here as they have been in Europe the number of 
United States species will exceed the number of the European. 
Fries makes the remark, “ Nullum genus quam Boletorum magis me 
molestavit: ” “No genus has troubled me more than that of the Boleti;” 
and lie indicates in the context that one cause of the trouble was the 
imperfect manner in which many species had been described. In my 
efforts to write a monograph of the American species, I have encoun¬ 
tered the same difficulty and, unless more information can be obtained 
concerning some species than is afforded by the descriptions of them, it 
will be necessary to follow the example of Fries and add an appendix of 
species of doubtful affinity. Among these may be mentioned B. betula, 
Schw., B. Murraii, B. & C., and B. alboater , Schw r . Fries refers the first 
one to B. parasiticus , Bull., but the viscose pileus, the stem with a 
reticulated bark, separating like the bark of birches, and the habitat on 
lignose earth, cast a doubt on the accuracy of this reference. B. Murraii 
is said to have spores pale yellow, as in P. castaneus. This would 
indicate an affinity with the Cariosi , but the internal character of the 
stem is not indicated. If it shall prove to be stuffed or excavated, all 
doubt concerning its relationship will be removed. 
