Biology Pamphlets Volume 664 (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. 1890 Excerpt: ...umber, rather darker than in S. ealifornicum Hark., which this much resembles, but from which it differs in its larger spore masses and spores not so distinctly roughened. SPH.a3ROPSIDE.aS. Phyllostiota tenerrima E. & E. On living leaves of Saponaria officinalis, London, Canada. Aug., Sept., 1892. (Dearness, No. 1,999.) Spots small (1-2 mm.), thin, round, white and transparent and finally deciduous, numerous but mostly not confluent. Perithecia epiphyllous, depressed-hemispherical, thin-membranaceous, 60-100/ diam., few on a spot. Sporules elliptical or oblong-elliptical, hyaline, 4-6 x 2-2 J/, abundant. Easily recognized by its thin, white, transparent spots. Phyllosticta astericola E. A E. On leaves of Aster umbellatus, Kenosha Co., Wisconsin. Aug., 1892. (Davis, No. 9,212.) Spots suborbicular, 1-2 mm. diam., dark brown, margin mostly subrepand and surrounded with a yellowish discoloration, often confluent, paler below. Perithecia epiphyllous, prominent, black, 150200/ diam. Sporules abundant, almond-shaped, hyaline, mostly 2-nucleate, 8-11 x 4/. Phyllosticta perforans E. & E. On leaves of Solanum dulcamara, London, Canada. (Dearness.) Spots amphigenous, small (2-3 mm.), thin and transparent, round or subangular, with a narrow, yellowish, slightly raised border on both sides. Perithecia mostly epiphyllous, few, sublenticular, black, perforated, 100-120/'. diam. Sporules elliptical, subolivaceous (smoky-hyaline), 32-5J x 2h/i. Differs from Ph. dulcamarce Sacc., in its thin white, mostly smaller spots and subolivaceous sporules. The spots are sometimes confluent and finally deciduous and are sometimes seen partly enclosed in the larger brown spots of Ph. dulcamarce. Phyllosticta niootiana E. & E. On leaves of tobacco, North Carolina. Oct., 1891....