Revision of the South American Genus Otachyrium (Poaceae: Panicoideae)

Sendulsky, Tatiana, and Thomas R. Soderstrom. Revision of the South American Genus Otachyrium (Poaceae: Panicoideae). Smithsonian Contributions to Botany, number 57, 24 pages, 7 figures, 1984.—A review of this genus of seven species is provided with descriptions and illustrations of each. Of these species, four are described as new: 0. aquaticum, 0. grandiflorum, 0. piligerum, and 0. seminudum. Two, 0. pterigodium and 0. versicolor, are already known in the literature, and one, 0. succisum, is a new combination. In addition to its short, subequal glumes, remarkable peculiarities of this panicoid genus are the enlarged palea of the lower staminate floret and the chartaceous, dark and shining or sometimes opaque and greenish, upper hermaphrodite floret, both of which are united at maturity. Official publication date is handstamped in a limited number of initial copies and is recorded in the Institution’s annual report, Smithsonian Year. Series cover design: Leaf clearing from the katsura tree Cercidiphyllum japonicum Siebold 8c Zuccarini. Library of Congress Cataloging in Publication Data Sendulsky, Tatiana. Revision of the South American Genus Otachyrium (Poaceae: Panicoideae). (Smithsonian contributions to botany ; no. 57) Bibliography: p. Supt. of Docs, no.: SI 1 .29:57 1. Otachyrium—Classification. 2. Botany—South America—Classification. Thomas R. II. Title. III. Series. QK1.S2747 no. 57 [QK495.G74] 581s [584'. 9] 84-600087 I. Soderstrom,