


Rytidosperma auriculatum (J.M.Black) Connor & Edgar

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Rytidosperma auriculatum (J.M.Black) Connor & Edgar, New Zealand J. Bot. 17: 322-323 (1979)
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Nomenclature
Connor & Edgar
J.M.Black
(J.M.Black) Connor & Edgar
1979
322-323
ICN
species
Rytidosperma auriculatum
Classification
Descriptions
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Small, grey-green, hoary, stiff tufts, shortly rhizomatous; leaves < culms; new shoots intravaginal, crowded, ± swollen at base. Sheaths pale stramineous, light purple above, with scattered long hairs increasing towards collar, culm sheaths especially hairy; collar hairs 1.5-3 mm long, extending across back of lamina; ligule 0.4-0.5 mm long; lamina to 5 cm long, densely and conspicuously covered with long stiff hairs, inrolled with thickened sparsely scabrous margins, tip obtuse. Culms up to 15 cm tall, glabrous, long-hairy below inflorescence. Panicle small, compact, erect, up to 2 cm long with few large spikelets on short pedicels; rhachis and pedicels conspicuously clothed with long stiff hairs. Spikelets (4)-6-8-flowered, awns exserted from glumes. Glumes irregularly purpled, lanceolate, subobtuse, ± equal, (7.5)—9.5—13 mm long, lower 11-13-nerved, upper 9-11-nerved. Lemma (2.2)-2.8-3.0 mm long, 9-nerved, upper and lower row of hairs very dense, continuous, upper row < lemma lobes, lower row overlapping upper, glabrous elsewhere; lemma lobes (6)-8-10 mm long, tapering to strong awns not much < central awn, lobes with a short (0.3-0.4 mm) acute membranous subsidiary lobe, adaxially with tufts of hairs near base of awn sinus. Central awn (6.5)-9- 12 mm long; column c. 3 mm long, slightly < upper lemma hairs. Palea (2.2)-3-3.4 mm long, broad and rounded across top, < upper lemma hairs, hairs short, scattered between keels, margins with longer fine hairs. Callus 0.4-0.7 mm long, marginal hair tufts just reaching lower lemma hairs. Rhachilla 0.2- 0.3 mm long. Anthers 0.3-0.4 mm long. Caryopsis c. 1.5 × 1 mm; embryo 0.7 mm long; hilum 0.4 mm long. Naturalised in New Zealand from Australia.
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Small, grey-green, hoary, stiff tufts, shortly rhizomatous; leaves < culms; branching intravaginal, shoots crowded, ± swollen at base. Leaf-sheath pale stramineous, light purple above, scattered long hairs increasing towards collar, culm sheaths especially hairy; apical tuft of hairs 1.5-3 mm, extending dorsally below blade. Ligule 0.4-0.5 mm. Leaf-blade to 5 cm, densely and conspicuously covered in long stiff hairs, inrolled with thickened sparsely scabrid margins, tip obtuse. Culm to 15 cm, internodes glabrous but long-hairy below inflorescence. Panicle small, compact, erect, to 2 cm of few large spikelets on short pedicels; rachis and pedicels conspicuously clothed in long stiff hairs. Spikelets (4)-6-8-flowered, awns exserted from glumes. Glumes irregularly purple-tinged, lanceolate, subobtuse, ± equal, (7.5)-9.5-13 mm; lower 11-13-nerved, upper 9-11-nerved. Lemma (2.2)-2.8-3.0 mm, 9-nerved, upper and lower row of hairs very dense, continuous, upper row < lemma lobes, lower row overlapping upper, glabrous elsewhere; lobes (6)-8-10 mm, tapering to strong awns ≤ central awn, lobes with a short (0.3-0.4 mm) acute membranous subsidiary lobe, adaxially tufts of hairs near base of awn sinus; central awn (6.5)-9-12 mm, column c. 3 mm ≤ upper lemma hairs. Palea (2.2)-3-3.4 mm, broad, apex rounded, < upper lemma hairs, interkeel hairs short, scattered, margins with longer fine hairs. Callus 0.4-0.7 mm, marginal hair tufts just reaching lower lemma hairs. Rachilla 0.2-0.3 mm. Anthers 0.3-0.4 mm. Caryopsis c. 1.5 × 1 mm; embryo 0.7 mm; hilum 0.4 mm.
Taxonomic concepts
Danthonia auriculata J.M.Black
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Notodanthonia auriculata (J.M.Black) Zotov
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
Rytidosperma auriculatum (J.M.Black) Connor & Edgar
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Identification keys
Metadata
9ebdf480-0270-4924-873f-c51f88e994c2
scientific name
Names_Plants
1 January 2000
20 March 2006