Rytidosperma pulchrum (Zotov) Connor & Edgar
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Rytidosperma pulchrum (Zotov) Connor & Edgar, New Zealand J. Bot. 17: 321 (1979)
Rytidosperma pulchrum (Zotov) Connor & Edgar
Nomenclature
Connor & Edgar
Zotov
(Zotov) Connor & Edgar
1979
321
ICN
species
Rytidosperma pulchrum
Classification
Synonyms
Descriptions
Rytidosperma pulchrum (Zotov) Connor & Edgar
Small dense tufts, or often open, with tufts of leaves at ends of elongating shoots, rooting at nodes; leaves somewhat acute, much < culms, disarticulating at ligule; new shoots intravaginal. Sheaths pale stramineous to light brown, occasionally purpled, glabrous; collar hairs few, sometimes absent, up to c. 1.5 mm long; ligule to c. 0.5 mm long; lamina to 10 cm long, folded, narrow, rather soft, glabrous, rarely with a few hairs. Culms up to 30 cm tall, glabrous. Panicle small, up to 5 cm long, with few spikelets on very slender pedicels; rhachis and pedicels closely short-scabrous, a few longer hairs at branch axils and occasionally 1-2 longer hairs below spikelets. Spikelets 3-(5)-flowered, awns exserted from glumes. Glumes blackish centrally, ovate to occasionally ovate-lanceolate, obtuse, (5)-6-7.5- (8) mm long, ± equal, lower 5-nerved, upper 3-nerved. Lemma (1.8)—2—2.6 mm long, 5-(7)- nerved, upper and lower rows of hairs continuous or upper row occasionally with fewer hairs, upper hairs slightly < lemma lobes, lower row overlapping upper, elsewhere glabrous, some few hairs along margins; lemma lobes (0.5)—1.8—2.8 mm long, usually awn-tipped. Central awn 3-4.5 mm long; column 0.5-1 mm long, hardly twisting, ± = palea, < upper lemma hairs. Palea 3-3.8 mm long, = or slightly < upper lemma hairs, glabrous between keels, margins sometimes with a few long hairs. Callus 0.2-0.4 mm long, with a few marginal hairs overlapping lower lemma hairs. Rhachilla 0.5- 0.8 mm long. Anthers 0.5—1.1—(1.4) mm long. Caryopsis 1.2-1.4 × 0.5-0.7 mm; embryo 0.6-0.7 mm long; hilum 0.3 mm long. Endemic.
Rytidosperma pulchrum (Zotov) Connor & Edgar
2n = 24
Rytidosperma pulchrum (Zotov) Connor & Edgar
Small dense tufts, or often open, with tufts of leaves at ends of elongating shoots, rooting at nodes; leaves somewhat acute, « culms, disarticulating at ligule; branching intravaginal. Leaf-sheath pale stramineous to light brown, occasionally purplish, glabrous; apical tuft of few hairs, sometimes 0, up to c. 1.5 mm. Ligule to c. 0.5 mm. Leaf-blade to 10 cm, folded, narrow, rather soft, glabrous, rarely with a few hairs. Culm to 30 cm, internodes glabrous. Panicle small, to 5 cm, of few spikelets on very slender pedicels; rachis and pedicels closely short-scabrid, a few long hairs at branch axils and occasionally 1-2 below spikelets. Spikelets 3-(5)-flowered, awns exserted from glumes. Glumes blackish centrally, ovate to occasionally ovate-lanceolate, obtuse, (5)-6-7.5-(8) mm, ± equal; lower 5-nerved, upper 3-nerved. Lemma (1.8)-2-2.6 mm, 5-(7)-nerved, upper and lower rows of hairs continuous or occasionally upper row hairs fewer, upper hairs slightly < lemma lobes, lower row overlapping upper, elsewhere glabrous, some few hairs along margins; lobes (0.5)-1.8-2.8 mm, usually awn-tipped; central awn 3-4.5 mm, column 0.5-1 mm, hardly twisting, ≈ palea, < upper lemma hairs. Palea 3-3.8 mm, ≤ upper lemma hairs, interkeel glabrous, margins sometimes with a few long hairs. Callus 0.2-0.4 mm, a few marginal hairs overlapping lower lemma hairs. Rachilla 0.5-0.8 mm. Anthers 0.5-1.1-(1.4) mm. Caryopsis 1.2-1.4 × 0.5-0.7 mm; embryo 0.6-0.7 mm; hilum 0.3 mm. Plate 12D.
Plant 10-20 cm tall; culms ±-_ geniculate; leaf blades ± permanently folded, short, spreading; glumes c. 6mm long, ovate-lanceolate; lemma with 2 transverse series of long hairs, awn c. 3 mm long ± twisted at base.
Gramen 10-20 cm altum; culmi ± geniculati; laminae ± in perpetuum plicatae, breves, patentes; glumae c. 6 mm longae, ovato-lanceolatae; lemma cum duabus transversis seriebus longorum pilorum, arista ± 3 mm longa, ± ad basim torta.
Taxonomic concepts
Notodanthonia pulchra Zotov
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
Rytidosperma pulchrum (Zotov) Connor & Edgar
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Identification keys
Metadata
90e3517c-87fa-4383-9dd5-e67d8a8c277a
scientific name
Names_Plants
1 January 2000
21 March 2006