41 



conidia; and this piocees is repeated several tinie?, a joii^t 

 or articulation being formed at each resting point which is 

 also marked by a ring of conidia surrounding the bundle 

 of hyphae at these points. This differs from A. sulfurea 

 Winter, of which we have a specimen, in its smaller septate 

 sporidia and the presence of conidia. The sporidia of A. 

 aurantiaca seera to be mature, and we do not think they 

 ever become 3-septatc as in A. sulfurea. 



Capnodium pelliculosum, B. & Rav — On leaves of 

 Magnolia glauca, February. Mycelium epiphyllous, forming a 

 thin, sooty- colored layer on the surface of the leaf and con- 

 sisting of closely septate, brown, subrectangularly branched 

 and interwoven threads, 5 — 8 f* thick, with each cell or joint 

 nucleate and bearing when well developed, stellately 3—4- 

 arted conidia, much like those of Triposporium , nearly 

 yaline at first, becoming brown, each arm 4 — 5 -septate 

 and nucleate, 7 — 9 /w thick at the base and 50—75 ^ long, 

 tapering to an obtuse point at the apex. Pycnidial perithecia 

 growing like thick branches from the sides of the pros- 

 trate threads, membranaceous, of rather coarse cellular 

 structure, oblong or flask-shaped 75—200 x 30— 50 f*, apex 

 subobtuse and suhfiinbriate, discharging countless, minute, 

 hyaline, oblong spores, 3—4 x 1 i^. Sometimes these peri- 

 thecia are quite globose and formed by the enlargement of 

 one of the component cells of a thread or hypha. There 

 are also produced from the mycelium cylindrical, brown, 

 multiseptate conidia, 70—80 x'6— 7 /", like the conidia of 

 Helrainthosporium. Ascigerous perithecia seated on the 

 mycelium, depressed -globose, membranaceous, 100 — 150 /< 

 diameter, with brown, septate appendages like those of an 

 Erysiphe 15-25 in number, 75 — 100 fi lonjr. Asci at first 

 oblong, becoming ellipsoidal and about 40 — 25 fi. Sporidia 

 crowded, broad-fusiform, hyaline, 1-septate at first, becoming 

 3 septate at maturity, and 15—22 x 4 — 7 ,«. 



Asterina stoma tophora, E. & M.— On living leaves 

 of Quercus laurifolia, February and March. Perithecia lenti- 

 cular, scattered, small, 170—185 /« diameter, with a thin, 

 reticulated margin and indistinctly perforated in the center, 

 texture cellular. Asci 30-35 x 6—8 /w, oblong and rather 

 below and abruptly contracted into a short, stipitate base. 

 Paraphyses none. Sporidia biseriate, oblong, 1- septate, 

 rather, narrower and more acute at the lower end, 7 — 12 x 

 2^/9—3 f*, hyaline. When a perithecium is removed from 

 the leaf, a piece of the epidermis often adheres to its bwer 

 surface so that under the microscope the stomata are visible 

 through the thin edge of the perithecium, appearing as if 



