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Rytidosperma clavatum (Zotov) Connor & Edgar

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Threat status: Not threatened
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Rytidosperma clavatum (Zotov) Connor & Edgar, New Zealand J. Bot. 17: 326 (1979)
Rytidosperma clavatum (Zotov) Connor & Edgar

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Endemic
Wild
New Zealand
Political Region

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Connor & Edgar
Zotov
(Zotov) Connor & Edgar
1979
326
ICN
species
Rytidosperma clavatum

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clavatum

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Rytidosperma clavatum (Zotov) Connor & Edgar

Variable in size and habit, from short and slender to larger and stout, dull green, densely soft-hairy or glabrous, shortly rhizomatous, spreading tufts; leaves much < culms; new shoots extravaginal. Sheaths light grey-brown, densely strict-hairy or glabrous; collar hairs up to 5 mm long, often extending across back of lamina; ligule 0.1-0.7 mm long; lamina flat or sometimes folded, up to 30 cm long, to 3-5 mm wide, with abundant hairs, or glabrous, margins minutely scabrous. Culms up to 90 cm long, glabrous throughout, or finely scabrous below inflorescence. Raceme or racemose panicle contracted, up to 5.5-(9.5) cm long, spikelets few to several on very short pedicels; rhachis and pedicels shortly and densely scabrous with longer hairs below spikelets and at branch axils. Spikelets 5-10- flowered, awns exserted from glumes. Glumes occasionally purple-margined, lanceolate, subobtuse, ± equal, 8-13.5-(17.5) mm long, lower (5)-7-9-(ll)- nerved, upper 5-7-(9)-nerved, sometimes with scattered long hairs. Lemma 2.5-3.5-(4.5) mm long, 9- nerved, upper row of hairs ± = or slightly > lemma, in marginal tufts only, or with two additional central tufts, lower row with short weak central tufts, or continuous, with longer marginal tufts barely, or not, reaching upper marginal tufts, elsewhere glabrous, shining; lemma lobes 6-13 mm long, gradually narrowed to long awns. Central awn 9-14-(16) mm long; column (2)-2.5-3.5 mm long. Palea 3.3-5.5- (6) mm long, > upper lemma hairs, glabrous between keels, margins with several long hairs or glabrous. Callus 0.6-1.2 mm long with strong marginal hair tufts overlapping lower lemma hairs. Rhachilla 0.3-0.4 mm long. Anthers 0.4-1.0 and 1.5- 2.2 mm long. Caryopsis 1.9-2.3-(3) × 0.8-1.1- (1.6) mm; embryo 0.7-1-(1.5) mm long; hilum 0.4- 0.5-(0.7) mm long. Endemic.

Rytidosperma clavatum (Zotov) Connor & Edgar

2n = 24

Rytidosperma clavatum (Zotov) Connor & Edgar

Variable in size and habit, from short and slender to larger and stout, dull green, densely soft-hairy or glabrous, shortly rhizomatous, spreading tufts; leaves « culms; branching extravaginal. Leaf-sheath light grey-brown, densely strict-hairy or glabrous; apical tuft of hairs to 5 mm, often extending dorsally below blade. Ligule 0.1-0.7 mm. Leaf-blade flat or sometimes folded, to 30 cm × 3-5 mm, abundant hairs, or glabrous, margins minutely scabrid. Culm to 90 cm, internodes smooth, or finely scabrid below inflorescence. Raceme or racemose panicle contracted, to 5.5-(9.5) cm, spikelets few to several on very short pedicels; rachis and pedicels shortly and densely scabrid with longer hairs below spikelets and at branch axils. Spikelets 5-10-flowered, awns exserted from glumes. Glumes occasionally purple-margined, lanceolate, subobtuse, ± equal, 8-13.5-(17.5) mm; lower (5)-7-9-(11)-nerved, upper 5-7-(9)-nerved, sometimes scattered long hairs. Lemma 2.5-3.5-(4.5) mm, 9-nerved, upper row of hairs ≥ lemma, in marginal tufts only, or two additional central tufts, lower row with short weak central tufts, or continuous, with longer marginal tufts barely, or not, reaching upper marginal tufts, elsewhere glabrous, shining; lobes 6-13 mm, gradually narrowed to long awns; central awn 9-14-(16) mm, column (2)-2.5-3.5 mm. Palea 3.3-5.5-(6) mm, > upper lemma hairs, interkeel glabrous, margins with several long hairs or glabrous. Callus 0.6-1.2 mm, strong marginal hair tufts overlapping lower lemma hairs. Rachilla 0.2-0.4 mm. Anthers 0.4-1.0 and 1.5-2.2 mm. Caryopsis 1.9-2.3-(3) × 0.8-1.1-(1.6) mm; embryo 0.7-1-(1.5) mm; hilum 0.4-0.5-(0.7) mm. Plate 11A.
Plant 30-60 cm tall; leaf blades mostly 6-12 cm long, 3-4 mm wide; panicle contracted, ± clavate-lanceolate; upper transverse series of long hairs of lemma reduced to two lateral tufts only; lower series continuous, lemma glabrous otherwise.
Gramen 30-60 cm altum; foliorum laminae plerumque 6-12 cm longae, 3—4 mm latae; panicula compressa, ± clavato-lanceolata; superior transversa series longorum lemmatis pilorum ad duos laterales penicillos reducta; inferior series continua; lemma cetera glabrum.
Plant robust, 40-80 cm tall, strict; leaf blades 15-20 cm long, 2—4 mm wide, flat, folded in bud; panicle narrow ± congested; glumes 15-20 mm long; upper transverse series of long hairs reduced to two lateral tufts and two tufts below awn.
Gramen robustum, 40-80 cm altum, strictum; foliorum laminae 15-20 cm longae, 2-4 mm latae, planae, in gemmis plicatae; panicula angusta ± congesta; glumae 15-20 mm longae; superior transversa series longorum, pilorum ad duos laterales penicillos duosque infra aristam reducta.

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Austrodanthonia clavata (Zotov) H.P.Linder
Rytidosperma clavatum (Zotov) Connor & Edgar
Danthonia nervosa Colenso
Rytidosperma clavatum (Zotov) Connor & Edgar
Danthonia pilosa var. stricta Buchanan
Rytidosperma clavatum (Zotov) Connor & Edgar
Notodanthonia clavata Zotov
Rytidosperma clavatum (Zotov) Connor & Edgar
Notodanthonia stricta (Buchanan) Zotov
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar
Rytidosperma clavatum (Zotov) Connor & Edgar

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Rytidosperma clavatum (Zotov) Connor & Edgar
[Not available]

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779e5875-8098-4e4c-a5e2-f11d6efd790c
scientific name
Names_Plants
1 January 2000
20 March 2006
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