Rytidosperma penicillatum (Labill.) Connor & Edgar
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Rytidosperma penicillatum (Labill.) Connor & Edgar, New Zealand J. Bot. 17: 327-328 (1979)
Rytidosperma penicillatum (Labill.) Connor & Edgar
Nomenclature
(Labill.) Connor & Edgar
Labill.
Connor & Edgar
1979
327-328
ICN
species
Rytidosperma penicillatum
Classification
Synonyms
Descriptions
Rytidosperma penicillatum (Labill.) Connor & Edgar
Tall, slender, light green, in dense, crowded or loose tufts, shortly rhizomatous; leaves from much <, to above ½ length of culms; new shoots extravaginal. Sheaths pale stramineous to grey-brown with rather dense or scattered short hairs; collar hairs to 2.5- (3) mm long; ligule c. 0.1 mm long; lamina up to 25-(35) cm long, flat, to 2 mm wide, or folded and inrolled, with scattered long hairs, margins scabrous. Culms up to 1 m tall, densely, minutely hairy for usually c. 10 mm below inflorescence. Panicle slender, elongate, up to 12 cm long; spikelets few to several on short pedicels; rhachis and pedicels densely short-scabrous with some longer hairs, especially below spikelets and above branch axils. Spikelets (3)-4-6-flowered, awns exserted from glumes. Glumes usually purpled centrally or near margin, lanceolate, subobtuse, 9-12—(13.5) mm long, ± equal, lower 7-(9)-nerved, upper 5-(7)- nerved. Lemma 2.2-3.5 mm long, 9-nerved, upper row of hairs ± = or slightly > lemma, in marginal and occasional adjacent tufts with usually two, occasionally 0 central tufts, lower row of marginal tufts not reaching to upper tufts, and shorter ± continuous to extremely sparse hairs between tufts, elsewhere glabrous or with 1-2 hairs centrally; lemma lobes 6-8.5 mm long, narrowed to fine awns. Central awn (9)—10—12 mm long; column (2)-2.5- 3.5-(4) mm long. Palea 3.5-4.5-(5) mm long, > upper lemma hairs, glabrous between keels and on margins. Callus 0.5-0.8-(l) mm long, with thick marginal hair tufts usually overlapping lower lemma hairs. Rhachilla 0.5-0.6 mm long. Anthers 0.5-0.7 and 1.2-1.8 mm long. Caryopsis c. 2 × 0.8-1.1 mm; embryo 0.7-0.9 mm long; hilum 0.3-0.5 mm long. Naturalised in New Zealand from Australia.
Rytidosperma penicillatum (Labill.) Connor & Edgar
Tall, slender, light green, in dense, crowded or loose tufts, shortly rhizomatous; leaves to about ½ height of culms; branching extravaginal. Leaf-sheath pale stramineous to grey-brown, rather dense or scattered short hairs; apical tuft of hairs to 2.5-(3) mm. Ligule c. 0.1 mm. Leaf-blade to 25-(35) cm, flat, to 2 mm wide, or folded and inrolled, with scattered long hairs, margins scabrid. Culm to 1 m, internodes glabrous but densely, minutely hairy to scabrid for usually c. 10 mm below inflorescence. Panicle slender, elongate, to 12 cm of few to several spikelets on short pedicels; rachis and pedicels densely short-scabrid with some longer hairs, especially below spikelets and above branch axils. Spikelets (3)-4-6-flowered, awns exserted from glumes. Glumes usually purplish centrally or near margin, lanceolate, subobtuse, 9-12-(13.5) mm, ± equal; lower 7-(9)-nerved, upper 5-(7)-nerved. Lemma 2.2-3.5 mm, 9-nerved, upper row of hairs ≥ lemma, in marginal and occasional adjacent tufts with usually two, occasionally 0 central tufts, lower row of marginal tufts not reaching to upper tufts, and shorter ± continuous to extremely sparse hairs between tufts, elsewhere glabrous or 1-2 hairs centrally; lobes 6-8.5 mm, narrowed to fine awns; central awn (9)-10-12 mm, column (2)-2.5-3.5-(4) mm. Palea 3.5-4.5-(5) mm, > upper lemma hairs, interkeel and margins glabrous. Callus 0.5-0.8-(1) mm, thick marginal hair tufts usually overlapping lower lemma hairs. Rachilla 0.5-0.6 mm. Anthers 0.5-0.7 and 1.2-1.8 mm. Caryopsis c. 2 × 0.8-1.1 mm; embryo 0.7-0.9 mm; hilum 0.3-0.5 mm.
Taxonomic concepts
Arundo penicillata Labill.
Rytidosperma penicillatum (Labill.) Connor & Edgar
Danthonia penicillata (Labill.) Beauv.
Rytidosperma penicillatum (Labill.) Connor & Edgar
Danthonia racemosa var. penicillata (Labill.) Benth.
Rytidosperma penicillatum (Labill.) Connor & Edgar
Notodanthonia penicillata (Labill.) Zotov
Rytidosperma penicillatum (Labill.) Connor & Edgar
Rytidosperma penicillatum (Labill.) Connor & Edgar
Rytidosperma penicillatum (Labill.) Connor & Edgar
Rytidosperma penicillatum (Labill.) Connor & Edgar
Rytidosperma penicillatum (Labill.) Connor & Edgar
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Identification keys
Metadata
1a6850ca-9d86-4214-b0be-fb68a85a754e
scientific name
Names_Plants
1 January 2000
20 March 2006