Repository: UIHistories Project: Board of Trustees Minutes - 1884 [PAGE 130]

EXTRACTED TEXT FROM PAGE:

134 Genus MELAMPSORA, Cast. Teleutospores one or more celled, when divided, the septa mostly vertical, sometimes horizontal or oblique, sessile, densely compacted in a firm, flat or slightly convex layer; uredospores single-celled, sessile upon the hymenium, the sori usually covered by a membrane which is finally irregularly ruptured. This genus, as here defined, includes not only what has been uniformly assigned to it, but the species which have been by different authors assigned to Galyptospora, Melampsorella, Phragmospora Thekopsora. Admitting all these as genera of equal rank, the characteristics may be given as follows: Teleutospores produced beneath the cells of the epidermis. Teleutospores one-celled Melampsora. Teleutospores divided , Phragmopsora. Teleutospores produced in the cells of the epidermis. Teleutospores one-celled, colorless Melampsorella. Teleutospores divided, colored— Sori small, with uredo Thekopsora. Sori broadly confluent or effused, without uredo—Galyptospora. With the single exception of Melampsora Goeppertiana (Galyptospora Goeppertiana, Kiib.n,) on various species of Vaccinium, no supposed seeidium form has been found; in this case the almost universal association of the teleutospore form on Vaccinium and one or more species of Peridermium on Pinus and Abies seems to strongly indicate their genetic relations. Other observations corroborate the supposed connection, so that in Europe at least we may accept the matter as a fact that this species of Melampsora and JEcidium (Peridermium) columnare, Alb. & Schw., are alternate forms. In America Peridermium balsameum, Pk., seems to be associated with the teleutoform, but whether P. balsameum and P. columnare are specially identical has not been determined. See Farlow Appalachia, Vol. III. (1884), p. 241, et seq. M. epilobii, (Pers.) Fkl. II and III. Hypogenous; uredosori scattered, minute hemispherical, opening by a circular stoma; uredospores obovate, sometimes varying to subglobose and oblong, epispore thin, sharply echinulate, each produced on a pedicel, orange-yellow, 12-15 by 14-18 ii; teleutosori irregular, scattered, often confluent in irregular, crust-like areas, .becoming chestnut-brown, or at length darker; teleutospores mostly one-celled, often divided by a septum which is horizontal, oblique or vertical, cuboidal or elongated epispore thin, smooth, 21-39 ta long. On Epilobium coloratum. Persoon described (Syn. Fung. p. 219) Uredo pustidata var. epilobii, and DeCandolle wrote Uredo epilobii (Flore Franc. II, p. 226) and Fuckel described the teleutoform and referred the uredo to the same species. The name, Uredo pustulata, Pers., has been used for various species.