Home
Annual. Culms tufted, erect or geniculate at base, 15–55 cm tall, branched. Leaf sheaths smooth, glabrous, shorter than internodes, laxly overlapping; leaf blades involute, 3–20 cm, finely pointed; ligule ca. 0.5 mm. Panicle usually narrow, loosely contracted, 4–20 cm; branches short, ascending, inserted singly on main axis. Spikelets gray-green or purplish green; glumes subequal or unequal with upper longer, 1-veined, scabrid on vein, lower glume lanceolate-oblong, 4–6.8 mm, acute, upper glume linear, 5–8 mm, obtuse to emarginate or apiculate; callus ca. 0.5 mm, narrowly obtuse; lemma linear, distinctly longer than upper glume, 7–11 mm, laterally compressed, smooth or rarely scabrid in upper half, keel scabrid upward; awn branches arising directly from lemma apex, central branch 1–2.5 cm, laterals slightly shorter. Anthers 1.8–2 mm. Fl. and fr. Jun–Oct.
Tufted annual, up to 1 m high, erect, often branched. Leaf blade up to 300 x 3 mm; ligule a dense fringe of hairs. Inflorescence a narrowly oblong to lanceolate, 10-50 mm wide, usually a spike-like panicle, interrupted at base, side branches appressed to main axis, sometimes branches open and spreading; spikelets densely clustered on branches. Spikelet 10-40 mm long (including awns), disarticulating above glumes; lower glume 2/3-3/4 length of upper glume, sometimes with a mucro or short awn up to 0.8 mm long. Floret 1; lemma laterally compressed, articulation and column absent; awns 3, glabrous, laterals well developed, shorter than central awn; callus with rounded, naked tip. Flowering time Dec.-Sept.
Tufted annual to 1000 mm high, erect, often branched. Leaf blade to 300 x to 3 mm. Inflorescence 10-50 mm wide, narrowly oblong to lanceolate, usually spike-like, interrupted at base, side branches adpressed to main axis, sometimes branches open and spreading; spikelets densely clustered on branches. Spikelet 10-40 mm long (including awns); lower glume 2/3-3/4 the length of upper glume, sometimes with a mucro or short awn to 0.8 mm long; lemma laterally compressed, articulation and column absent, usually only keel scabrid; awns three, laterals well developed, shorter than central awn; callus with rounded, naked apex; anther 1.0-1.3 mm long.
Annual, tufted (erect, often branched), up to 1 m high. Leaf blades up to 300 mm long, up to 3 mm wide. Spikelets 10-40 mm long (including awns). Inflorescence narrowly oblong to lanceolate, 10-50 mm wide, usually spike-like, interrupted at base, with side branches appressed to main axis, sometimes branches open and spreading, with spikelets densely clustered on branches; lower glume two-thirds to three-quarters the length of upper glume, sometimes with a mucro or short awn to 0.8 mm long, lemma laterally compressed, articulation and column absent; awns 3, laterals well developed, shorter than central awn; callus with rounded, naked tip.
An annual plant; up to 1 m high; tufted. Culms erect; often branched. Leaf blades up to 300 x 3 mm. Flowers: panicle compact; narrowly oblong to lanceolate; 10-50 mm wide; interrupted at base; with side branches appressed to main axis; sometimes branches open and spreading; with spikelets densely clustered on branches; spikelets 10-40 mm long (including awns); lower glume 2/3-3/4 length of upper glume; sometimes with a mucro or short awn up to 0.8 mm long; lemmas laterally compressed; articulation and column absent; usually scabrid only on keel; awns 3; laterals well developed; shorter than central awn; callus with rounded; naked apex.
Lemma (5·5)8-10(14) mm., usually exceeding, sometimes as long as, the glumes, tubular or slightly compressed, not narrowed upwards, pallid, usually with purple spots or tinged with purple, finely punctulate and scabrous on the keel, rarely scabrous on lateral sides towards the apex; column absent; awns unequal or subequal, more or less winged towards the base, very scabrous, the central awn being up to 20 mm. long, lateral ones 8-15 mm. long; callus 0·5-0·7 mm. long, obtuse, densely shortly barbate; articulation absent.
Glumes unequal, linear-lanceolate to lanceolate-oblong, more or less keeled; the inferior 4-7 mm. long, 1-nerved, minutely scaberulous or glabrous, emarginate at the apex with obtuse lobes and with an exserted mucro from the sinus, or acute, scabrous or scaberulous on the keel; the superior up to 6-8·5 mm. long, erose, 2-fid at the apex, with a mucro or short awn from the sinus, becoming scabrous on the keel towards the apex.
Annual, up to 1 m tall. Leaves linear, sparse; ligule a fringe of hairs. Inflorescence a narrow, dense panicle often spike-like. Spikelets 10-40 mm long (including awns), often flushed purple; 1-flowered; glumes unequal, shorter than or equalling spikelet (excluding awns); lemma 3-awned, column and articulation absent.
An annual herb or bristle grass. It can grow 1 m high. The stalks are rounded. It has a tight leaf sheath. The leaf blade is narrow and has a long point. The flowers is a narrow group or spiklets each with 3 awns. The sharp seeds are shed when ripe.
Panicle up to 25 x 0·1-0·25 cm., exserted, erect, narrow and dense, interrupted at the base, or lax, many-flowered with a scabrous axis and appressed, erect or somewhat spreading, scabrous or scaberulous branches.
A chiefly tropical sp. with the awns flat at the base, the central one 8–15 mm, the first glume half to two-thirds as long as the second, is rarely adventive in our range.
Culms erect, somewhat geniculately ascending, often branched from the base and lower nodes, glabrous, smooth, often purplish; nodes glabrous, smooth.
Leaf-laminae up to 15 x 0·1-0·25 cm., linear, usually flat, scabrid above, usually glabrous beneath, with margins conspicuously thickened.
Annual to 1 m. Leaves linear. Spikelets in a narrow, often spike-like panicle, 10-40 mm long, lower glume mucronate.
Leaf-sheaths tightly or laxly embracing the culm, more or less keeled, striate, smooth or scaberulous.
Ligule a short-ciliate rim; auricles smooth or minutely pubescent; collar glabrous.
Spikelets greenish or green tinged with purple.
Annual, 10-100 cm. high, caespitose.
Leaf-blades often becoming involute
Annual, up to about 1 m. high
