Rytidosperma tenuius (Steud.) A.Hansen & Sunding

Species

Angiosperms > Poales > Poaceae > Rytidosperma

Characteristics

Grey-green or greyish purple, coarse erect tussocks, occasionally shortly rhizomatous; leaves » culms; branching intra-and extravaginal. Leaf-sheath white or sometimes greyish, sometimes with few scattered fine hairs above; apical tuft of hairs 1-2-(3) mm. Ligule 0.1-0.4-(0.6) mm. Leaf-blade to 35 cm, flattish, becoming inrolled, to 3 mm wide, sometimes with scattered hairs, margins sparsely scabrid. Culm stout, to 1 m, internodes smooth, minutely scabrid below inflorescence. Panicle large, strict, to 15 cm, of many spikelets on ± rigid pedicels; rachis and pedicels closely short-scabrid, often longer hairs intermixed. Spikelets 5-6-(7)-flowered, awns included by or exserted from glumes. Glumes usually broad, purple-margined, lanceolate, subacute, (12)-15-17-(19) mm, ± equal, both 7-nerved. Lemma 2.5-3 mm, 9-nerved, upper and lower rows of hairs very dense, upper row < lemma lobes and much overlapped by lower, glabrous elsewhere, occasional hairs centrally and on margins; lobes (6.3)-7-9 mm, narrowed to fine awn; central awn (8.5)-10-14 mm, column 1-2.5 mm < upper lemma hairs. Palea 3.5-4.5 mm, < upper lemma hairs, interkeel hairs long, numerous, in lower ⅔, and on margins. Callus (0.8)-1-1.3 mm, marginal hair tufts overlapping lower lemma hairs. Rachilla c. 0.2 mm. Anthers 0.8-1.2 and 1.7-2.1 mm. Caryopsis 1.6-2 × 0.8 mm; embryo 0.7 mm; hilum 0.5 mm.
More
Plants caespitose; innovation buds intravaginal. Culms 23–80 cm high. Inflorescences linear-lanceolate to triangular. Spikelets 9–17 mm long, with 3–6 florets. Glumes substantially exceeding florets, green to straw-coloured, with purple margins; lower glume 7.5–17 mm long, 3–4 mm wide. Lemma: body 2–3.8 mm long, narrow, glabrous or villous between the rows of tufts; both rows of hair tufts complete, with lower row equalling or exceeding upper row; lobes longer than body, but not twice as long; setae 0.8–4 mm long, shorter than lobes; awn 6–14 mm long, exceeding setae; awn column tightly twisted, shorter than lobes and hidden in upper lemma hairs. Palea narrowly elliptic to ovate, 3–6 mm long, narrow, 3–5 times as long as wide, slightly exceeding lemma sinus, villous between keels, with lateral hair tufts. Anthers 1–2.1 mm long. Caryopsis 1.8–2.4 mm long.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
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Mature height (meter) 0.23 - 0.8
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Environment

Ontablelands usually in somewhat damp habitats, rarely dominant; along thecoastal shelf a very common constituent of disturbed road verges. 
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Hardiness (USDA) 8-12

Usage

Uses -
Edible -
Therapeutic use -
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Animal toxicity -

Cultivation

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Images

Rytidosperma tenuius unspecified picture

Distribution

Rytidosperma tenuius world distribution map, present in Australia and New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:419836-1
WFO ID wfo-0000896507
COL ID 78YXB
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Notodanthonia purpurascens Plinthanthesis tenuior Rytidosperma tenuius Austrodanthonia tenuior Danthonia purpurascens Danthonia tenuior Notodanthonia tenuior