or less equal and keeled. Lemma stiff and membraneous; when present fine dorsal awn bent and twisted; callus hairy. Palea hyaline and 2-keeled. Lodicule 2, free and
membraneous. Stamen 3. Ovary glabrous. Stigma 2, plumose. Caryopsis compressed fusiform.
Ornamental, short flowering time, some species with awns early deciduous, found in highland and subalpine regions.
26.1. Deyeuxia australis Zoll. Mor. P. Jansen. Acta Bot. Neerl. 13: 472.
1952. Calamagrostis australis Zoll. Moritz Buse, Pl. Jungh. 343. 1854.
Plants perennial, caespitose. Culms 10-75 cm long, erect, or geniculately ascending. Internodes distally glabrous. Sheaths glabrous on surface. Ligule 3-4 mm
long, an eciliate membrane. Blades 5-30 cm by 1-7 mm, flat, or involute, the surface glabrous. Inflorescence a panicle. Panicle open , 3-25 cm long; primary branches
whorled at lower nodes. Panicle axis smooth, or scaberulous, pilose. Spikelets solitary: fertile spikelets pedicelled. Pedicels 2-5 mm long. Fertile spikelets
comprising1 fertile florets, with a barren rhachilla extension; lanceolate, 4 mm long, laterally compressed, breaking up at maturity, disarticulating below each fertile floret;
floret callus pilose, or bearded. Glumes similar, persistent, reaching apex of florets, firmer than fertile lemma. Lower glume 4 mm long, lanceolate, shorter than upper
glume, coriaceous, 1-keeled, 1-nerved; primary nerve ciliolate; lateral nerves absent; surface asperulous; apex acumnate. Upper glume lateral nerves absent, apex
acuminate. Florets: fertile lemma 4-5 mm long, lanceolate, membraneous, without keel, 5-nerved; surface scabrous, apex dentate, bifid, 1-awned; principal awn dorsal,
arising 0.5 way up back of lemma, 7 mm long, straight. Palea as long as lemma; rhachilla extension 1 mm long, pilose. Lodicules 2. Anthers 3, 1.5 mm long. Stigmas
2. Caryopsis with adherent pericarp.
Notes
Found in Malesia and Papuasia.
Distribution
South: G. Asoemtatoempoeng, Alt. 2500 m; Top Wawah Karaeng Bonthain, Alt. 2800 m.
Habitat Primary
forest.
Specimen examined
Toxopeus 8 BO; Pijl 767
b
BO.
Tribe 6. BRACHYPODIEAE Harz. Linnaea 43: 15, 16. 1880. Type:
Brachypodium P. Beauv. Ess. Agrostogr. 100, 15, pl. 19, f. 35. 1812.
Brachyelytreae Ohwi, Bot. Mag. Tokyo 55656: 361-362. 1941.
Plants perennial, rarely annual. Blades linear, or convolute. Ligule membraneous. Inflorescence a loose raceme. Spikelets alternating on opposite sides
of, and lying broadside to the rachis; rachis tough; pedicels very short. Spikelets elongate, with 5-20 florets, subterete to slightly laterally compressed, disarticulating
above glumes and between florets. Glumes dissimilar, lanceolate, shorter than the lowest lemma, herbaceous to membraneous, rounded on back, distinctly 3-9-nerved,
apex obtuse to shortly awned. Lemmas lanceolate, herbaceous to firmly membraneous, sometimes becoming letheary at maturity, rounded on back, 7-9-
nerved, awned from entire acuminate acuminate apex; awn straight. Palea subequal to lemma, ciliate on keels. Lodicules 2, ciliate; stamens 3; stigmas 2, the ovary with a
hairy apical appendage. Caryopsis tightly enclosed by lemma and palea.
Genus description and key to the species
12.
BRACHYPODIUM P. Beauv. Type: Brachypodium pinnatum L. P. Beauv.
Ess. Agrostogr. 100, 15, pl. 19, f. 35. 1812; Contr. U.S. Natl. Herb. 24: 196. 1925. Brevipodium A. Love D. Love. Bot. Not. 114: 36. 1961.
Hemibromus Steud. Syn. Pl. Glum. 1: 317. 1854. Trachynia Link. Hort. Berol. 1: 42. 1827.
From the Greek brachys “short” and podion “a little foot”, referring to the short
pedicels of the spikelets, to subsessile spikelets. About 10 species, Africa, Europe, America, Australasia, and Asia. Plants
annual or perennial, rhizomes branching when present, herbaceous, stems upright and
flimsy, wiry, erect or decumbent, often rooting at nodes, rhizomatous or tufted, forming tussocks. Internodes hollow. Blades linear. Auricle absent. Ligule a short
unfringed or fringed membrane. Plants bisexual. Inflorescence linear or arched or nodding, short spike-like loose racemes. Spikelets elongated usually solitary
pedicellate or subsessile. Floret 5-22 bisexual or uppermost floret sometimes reduced and sterile. Glumes dissimilar, persistent and stiff. Lemma herbaceous to
membraneous, 7–9-nerved and with a straight terminal awn; hairy callus absent. Palea oblong and ciliate. Lodicule 2, ciliolate, free and membraneous. Stamen 3. Ovary
with apex hairy or villous. Stigma 2, white plumose. Weed species, adapted to disturbed habitats, ornamental, open habitats.
12.1. Brachypodium sylvaticum Huds. P. Beauv. Ess. Agrostogr. 101, 155, pl.3,
