Repository: UIHistories Project: Board of Trustees Minutes - 1884 [PAGE 111]

EXTRACTED TEXT FROM PAGE:

115 Lecythia and is much like that of Melampsora on willows. The teleutosori on the upper side of the leaf are compact—the spores crowded together on the under side; the spores are diffusely associated in the sori. P. prmii-spinosce, Pers. II and III. Hypophyllous. Spots above small, scattered or confluent, for II. yellow, for III. purple; sori scattered, small, rounded, teleutosori purplish brown; uredospores oblong or clavate-elliptical, smooth, 15-18 by 32-39 /J. ; paraphyses pedicel-like, then swollen at the end and often curved; teleutospores deeply constricted, the segments often globose, easily separable or more closely united and irregular, strongly echinulate, 21-24 by 24-39 p.; pedicels hyaline, very fragile, about the length of the spore; the paraphyses numerous, much enlarged above and brown. On leaves of Prunus Americana, P. Virginiana and P. serotina. The uredoform is Uromyces prunorum, Fckl. The shape and attachment of the cells of the teleutospores varies on different hosts. On Primus Americana the cells are nearly or quite globular and easily separable, while on P.. serotina they are well joined and variable. Nees (Syst. d. Pilze Schwamme [1816]) under the generic name of Dicceoma, separated the Puccinia species in which the spores spontaneously divided at the septum before germination. P. prunispinosce belongs to this group. P. Peckiaiia, Howe. III. Hypogenous; sori small, scattered, few or many, sometimes sparingly confluent, cinnamon-brown, powdery; spores in one view more or less triangular, in the other at right angles to the first, elliptical, not constricted at segment, upper segment triangular with a small, hyaline, obtusely rounded apiculus, lower segment in side view somewhat quadrate with two basal projections, to one of which the pedicel is attached, and the other is terminated with a hyaline apiculus similar to that of the upper segment, 22-28 (base) by 36-45 //; pedicel hyaline, fragile. On Rubus villosus: Urbana, July 24th, 1884, T. J. Burrill. P. tiareUa, B. & C. III. Amphigenous, spots small, distinct, reddish-brown; sori scattered, circular, prominent, on the petioles more or less elongated and sometimes confluent, chestnut-brown, spores elliptical, constricted at the septum, vertex much thickened and usually prominently pointed, base mostly obtusely rounded, epispore rather thin, smooth, 12-18 by 21-36 /i; pedicel nearly hyaline, very slender, once to twice as long as the spore. On Mitella diphylla. Thanks are due to Professor W. G. Farlow for the comparison of this with original specimens.