English

Abstract

Wilson, K. L. (National Herbarium of New South Wales, Royal Botanic Gardens, Sydney, Australia 2000) 1980. Notes on some Australian species of Cyperaceae. Telopea 1 (6): 457-467, Pl. XXVI-XXVII.-The following new species are described: Baumea johnsonii, Bulbostylis burbidgeae, Cyperus portae-tartari and C. viscidulus. Gahnia australis (Nees) K. L. Wilson and G. drummondij (Steud.) K. L. Wilson are published as new combinations and a key provided to Gahnia section Microstachyae. Cyperus lhotskyanus Boeck. is reinstated, and Lepidosperma exsul C. B. Clarke is relegated to synonymy under Tricostularia neesii Lehm. Cyperus compactus Retz. is recorded as new for Australia. A key is provided to the Australian species of Bulbostylis, and B. eustachii J. M. Black ex C. M. Eardley is synonymized under B. barbata (Rottb.) C. B. Clarke. INTRODUCTION Recent collecting in Australia, particularly in the more remote northern areas, has provided material of new species and of little-known species of Cyperaceae. In this paper, four new species are described and the synonymies of various other species are discussed. Since recent revisions exist for all but one of the genera dealt with here (Bulbostylis being the exception), discussion is brief. Of the revised genera, Kiikenthal published revisions of Cyperus (1935-36), of Lepidosperma (1941 a & b), of Baumea (1942) as a subgenus of Cladium, of Gahnia (1943) and of Tricostularia (1944). Gahnia had previously been revised by Benl (1940). The work reported in this paper was begun at the National Herbarium of New South Wales and was completed after visits in 1977 to the Royal Botanic Gardens, Kew, to the British Museum (Natural History), to the Royal Botanic Gardens, Edinburgh, and to the Laboratoire de Phanerogamie, Paris. Unless otherwise indicated, all specimens cited have been seen by the author. BAUMEA Gaudich. Baumea has been variously regarded as a subgenus of Cladium (Kiikenthal, 1942), as a synonym of Machaerina (Kern, 1974; Vanhecke, 1974) and as a separate genus (Blake, 1969; Raynal, 1972). I am following Blake and Raynal in retaining Baumea as a separate genus. Baumea johnsonii K. L. Wilson, sp. nov. habitu et inflorescentia B. gunnii (Hook. f.) S. T. Blake et affinibus similis et nullo dubio his speciebus proxima, praecipue culmis foliisque scabridis differt. ROLOTYPE: NEW SOUTH WALES: Central Tablelands: Govetts Leap, Blackheath, E. F. Constable 5576A, 10.xii.1964 (NSW). ISOTYPES: BRI, CANB, CRR, K, P. Caespitose perennial. Culms erect, more or less terete to biconvex, scabrous, without nodes, 15-60 cm tall, 1-2 mm diam. Leaves basal, equitant, flattened above, to 150 cm tall, 2-3 mm wide, somewhat softto tough-textured, scabrous, shorter than to greatly exceeding culm and inflorescence; sheaths reddish; lowest leaves reduced to sheaths. Inflorescence-bracts reddish, flat, much shorter than lowest branch of inflorescence. Inflorescence paniculiform, (10-) 15-55 cm long, with (10-) 20-35 spikelets; branches slender, somewhat arching, sulcate, ± scabrous; rhachis elongated between lowest and upper branches, sulcate, scabrous, (5-) 10-38 cm long. Spikelets 6-8 mm long, solitary, with 1 fertile flower, glumes Volume 1(6): 457–467 Publication Date: March 1980 dx.doi.org/10.7751/telopea19803607 TELOPEA Journal of Plant Systematics Til. Ro)'al BOTANIC GARDENS 6 DOPII(liPi Tmst plantnet.rbgsyd.nsw.gov.au/Telopea • escholarship.usyd.edu.au/journals/index.php/TEL· ISSN 0312-9764 (Print) • ISSN 2200-4025 (Online)