Memoirs of the Torrey Botanical Club Volume 14-15 (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 Excerpt: ... abruptly incurved hairs. The asci were cylindrical, with their spores arranged in a single row. According to Cocconi experiments with cultures of this plant demonstrated on the one hand the formation of a pycnidial stage which produced two-celled spores, and on the other, the formation of branched conidiophores bearing spores in a clump at the tips of the branches. In 1902 Massee and Salmon (59) published a diagnosis of Ch. arachnoides. At first sight mounted specimens of this form, which were received from the Royal Botanic Gardens at Kew, may be easily mistaken for a Chaetomium, but with more careful examination characteristics appear which are sufficient to exclude it from this genus. At the top of the perithecium is a long neck resembling that of a Melanospora, and it is from the neck that the hairs arise which form at maturity a tangled mass, and which closely resemble the hairs of Ch. murorum Cda. The spores at maturity are honey-yellow in color, a characteristic unusual for Chaetomium spores. There are three scattered nomina nuda which have been found in literature unaccompanied by description or figures, and regarding which little is known. Material under the name of Ch. Bromelliae Schw. has been found in the Curtis herbarium, but no further mention or description has been published. The plants here included are evidently not Chaetomia, for they consist of spherical or elongated, black pustules, firmly attached to the substratum by a broad base. There are no hairs with the exception of a few bases of stout hyphae at the sides of the fruiting body. No spores could be obtained. The material in the Curtis herbarium which, according to a note, came from the herbarium of Schweinitz, and which undoubtedly represents authentic specimens, appears to be an ...