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Colonies grow rapidly, and a hyaline mycelium covers the agar in a petri dish in 3-5 da at 24, 28, 35, and 38 C. Some ascocarps are produced on Difco PDA, CMA, and LBA agars. Maximum production takes place on MY agar at 28-29 C in 1 mo. The MY agar consisted of 1% malt extract, 0.4% yeast extract, and 0.4% dextrose. Ascocarps are produced on full-strength and 4-strength medium. Perithecia produced in culture are similar to those produced in cantaloupe root tissue. In culture some perithecia are so small that they contain only one or two asci, while others reach 500 /% in diam. The perithecium is nearly globose, nlembranous, cream to light brown, with a well-defined dark periapical ring (FIG. 2). Within the ring, a short, rounded neck may protrude (FIGs. 3, 4). The several-layered perithecial wall (FIG. 3) is transparent, and the dark ascospores can be seen through the wall (FIG. 1). The inner wall layers are flattened plectenchyma. The more external layers are also plectenchymatous, with pigment irregularly distributed in the walls of the outermost layers. The perithecium ruptures by a tear within the dark periapical ring (FIG. 2). Asci (FIG. 5) are clavate to pyriform, stipitate, unitunicate, thick walled, persistent, 5690 x 30-55 /u including the stipe. Asci are released from the perithecium i , J. 1931. M nographia Pezizinearum Riograndensium. Broteria, Sir. Bot. 346

(1974). Mycocentrospora Verrucosa, The Cause of Foliar Shot—Hole of Euonymus. Mycologia: Vol. 66, No. 1, pp. 170-173.

Gloiosphaera clerciana (Boudier) v. Hohnel, a rare Hyphomycete, has been collected in western North America. Its development is described and its nomenclature reviewed.

Colletogloeum fouquieriae is described from Arizona as a new species causing leaf lesions on Fouquieria splendens. It differs from C. sissoo, the type species, in conidium morphology and is briefly...

1. Urediniospores mostly 42-56 A long; teliospores mostly 30-36 ,a wide ..... Puccinia tillandsiae 1'. Urediniospores mostly less than 35 A long; teliospores mostly less than 30 ,t wide or unknown 2 2. Urediniospore wall mostly 1.5-2 t thick; telia unknown.... Uredo nidularii 2'. Urediniospore wall 2.5 a or thicker 3 3. One-celled teliospores common to predominant Puccinia pitcairniae ssp. pitcairniae 3'. One-celled teliospores none or rare........ P. pitcairniae ssp. chapalensis

On February 8, 1946, plant quarantine inspectors intercepted in the cargo of an American steamer from China a portion of a dried tuber of Colocasia esculenta. Although the material appeared to be in a state of advanced desiccation, the fungus on it grew readily when transferred to corn-meal and malt agars. On corn meal it produced circular to irregular colonies which were white and cottony, with growth which was not heavy or dense. Within a week the fungus fruited abundantly over the surface of the colony, producing at length long chains of conidia which in mass were "dark greenish olive" to "olivaceous black." 1 Conidia size, shape, and color in culture were identical with that observed on the original specimen. The fungus was tentatively determined as Dendryphium sp. An examination of the species of Dendryphium in the Mycological Collections of the Bureau of Plant Industry, Soils, and Agricultural Engineering revealed the presence of a culture of Dendryphiumtz sp. determined by V. K. Charles and A. E. Jenkins in 1920 which had been isolated from dead cotton roots in Texas by J. J. Taubenhaus. This specimen is identical with the fungus on Colocasia. A third collection of the fungus was made in April, 1946, on Irish potato tuber intercepted from Mexico. This hyphomycete is here described as new.

(1969). Arthrinium Japonicum and Notes on Arthrinium Kamtschaticum. Mycologia: Vol. 61, No. 1, pp. 187-190.

(1971). Cercospora Uromycestri, Hyperparasite of Rust on Cestrum Diurnum. Mycologia: Vol. 63, No. 3, pp. 689-693.