dcsimg

Comprehensive Description

provided by North American Flora
Dicaeoma virgatum (Ellis & Ev.) Kuntze, Rev. Gen. 3 3 : 471
1898.
Caeoma Andropogi Schw. Trans. Am. Phil. Soc. II. 4: 290. 1832. Not Dicaeoma Andropogonis
Kuntze, 1898. Puccinia virgaia Ellis & Ev. Proc. Acad. Phila. 1893: 154. 1893. Puccinia clavispora Ellis & Barth. Erythea 4: 79. 1896. Uredo alabamensis Dietel; Atk. Bull. Cornell Univ. 3: 22. 1897.
O and I. Pycnia and aecia unknown.
Uredinia amphigenous, crowded and often confluent, narrowiy oblong or linear, 1-3 mm. long, early naked, chestnut-brown, ruptured epidermis conspicuous; paraphyses numerous, clavate or sometimes capitate, 19-23 by 55-80 /x, straight or curved, the wall cinnamonor chestnut-brown, 2-3 fx thick, 5-9 y. at apex, smooth; urediniospores obovoid, oblong or ellipsoid, 21-31 by 26-42 jx; wall chestnut-brown above, paler below, 2-3/* thick, usually thicker at apex, 3-5 ,u, moderately verrucose, the pores 4, equatorial.
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bibliographic citation
Joseph Charles Arthur and Fred. Denton Fromme. 1920. (UREDINALES); AECIDIACEAE (continuatio); DICAEOMA ON POACEAE. North American flora. vol 7(4). New York Botanical Garden, New York, NY
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