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Graminae: Eragrostis rottleri

Eragrostis rottleri Stapf.

Eragrostis rottleri Stapf.

Species

Eragrostis rottleri Stapf.

Original Distribution

India, Tamil Nadu, Tranquebar

Extinction Data

IUCN =Extinct Listed (Probably) 1989, Listed Extinct by WCMC 1996

Description

Annual. Culms erect, or geniculately ascending; 3070 cm long. Ligule a fringe of hairs. Leaf-blades flat, or convolute; 318 cm long; 14 mm wide. Leaf-blade apex attenuate.INFLORESCENCE Inflorescence a panicle.Panicle open; oblong; 610 cm long. Primary panicle branches 12 -nate; not whorled. Panicle branches eglandular; glabrous in axils.Spikelets solitary. Fertile spikelets pedicelled. Pedicels eglandular.FERTILE SPIKELETS Spikelets comprising 412 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 46 mm long; 1.5 mm wide; breaking up at maturity; rhachilla persistent; retaining paleas. Rhachilla internodes obscured by lemmas.GLUMES Glumes deciduous; similar; shorter than spikelet. Lower glume ovate; 1 mm long; membranous; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acute. Upper glume ovate; 11.5 mm long; 0.91 times length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acute.FLORETS Fertile florets divergent. Fertile lemma ovate; 1.21.5 mm long; membranous; keeled; 3 -veined. Lemma apex acute. Palea keels scaberulous. Apical sterile florets resembling fertile though underdeveloped.FLOWER Anthers 3; 0.20.3 mm long.FRUIT Caryopsis with adherent pericarp; ellipsoid; laterally compressed; 0.40.5 mm long.

Number of Specimens at Kew

4

Specimen Type (Y/N)

Y

Kew Herbcat Barcode Number

K000518040

Information Sources

Nayar, M.P. and Sastry, A.R.K. (eds.) (1987) Red Data Book of Indian Plants. Vol.1. Calcutta, Botanical Survey of India.Walter, K.S. and Gillett, H.J. (eds) (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre IUCN The World Conservation Union, Gland, Switzerland and Cambridge, UK, Extinct Plant Species of the World IUCN Survey and preliminary report: April 1989