Rytidosperma buchananii (Hook.f.) Connor & Edgar
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Rytidosperma buchananii (Hook.f.) Connor & Edgar, New Zealand J. Bot. 17: 320 (1979)
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Nomenclature
(Hook.f.) Connor & Edgar
Hook.f.
Connor & Edgar
1979
320
ICN
species
Rytidosperma buchananii
Classification
Vernacular names
Synonyms
Descriptions
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Loose, dull green tussocks; leaves semi-pungent usually much < mature culms, disarticulating at ligule; new shoots intra vaginal. Sheaths pale stramineous, glabrous, rarely with long scattered hairs, collar-hairs (0.5)-1-2-(3) mm long; ligule 0.2-0.3- (0.6) mm long; lamina to 30 cm long, folded or tightly rolled, sometimes almost filiform, glabrous or rarely with long scattered hairs, margins scabrous near base and again towards tip. Culms up to 50- (70) cm tall, glabrous, minutely scabrous below inflorescence. Panicle erect, to 10 cm long, usually ± compact with several spikelets; rhachis and filiform pedicels closely short-scabrous with slightly longer hairs below spikelets and sometimes at branch axils. Spikelets (3)-4-5-(6)-flowered, awns slightly exserted from glumes. Glumes purpled centrally, lanceolate, subobtuse, (6)—7—10—(11) mm long, ± equal, lower 5-7-nerved, upper 3-5-nerved. Lemma 2—3—(3.5) mm long, 7-9-nerved, upper and lower rows of hairs usually sparse or lacking between dense marginal tufts, upper row < lemma lobes, lower row overlapping upper, glabrous and shining elsewhere, rarely with one or two hairs centrally; lemma lobes 1—2.5—(3) mm long, tapering to a minute to short fine awn. Central awn 2.5-5.5-(6.5) mm long; column 1-2 mm long, occasionally not developed, ± = palea and upper lemma hairs. Palea 3- 4 mm long, ± = upper lemma hairs, glabrous between keels, margins rarely with a few long hairs. Callus c. 0.4 mm long with marginal hair tufts much overlapping lower lemma hairs. Rhachilla 0.5-1 mm long. Anthers 0.5-1.3 mm long. Caryopsis 1.2-1.8 × 0.5-0.7 mm; embryo 0.5-0.7 mm long; hilum 0.2- 0.3 mm long. Endemic.
Rytidosperma buchananii (Hook.f.) Connor & Edgar
2n = 48
n = 36
2n = c. 72
2n = 72
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Loose, dull green tussocks; leaves semi-pungent, usually « mature culms, disarticulating at ligule; branching intravaginal. Leaf-sheath pale stramineous, glabrous, rarely long scattered hairs; apical tuft of hairs (0.5)-1-2-(3) mm. Ligule 0.2-0.3-(0.6) mm. Leaf-blade to 30 cm, folded or tightly rolled, sometimes almost filiform, glabrous or rarely some long scattered hairs, margins scabrid near base and again towards tip. Culm to 50-(70) cm, internodes smooth but minutely scabrid below inflorescence. Panicle erect, to 10 cm, usually ± compact, of several spikelets; rachis and filiform pedicels closely short-scabrid with slightly longer hairs below spikelets and sometimes at branch axils. Spikelets (3)-4-5-(6)-flowered, awns slightly exserted from glumes. Glumes purplish centrally, lanceolate, subobtuse, (6)-7-10-(11) mm, ± equal; lower 5-7-nerved, upper 3-5-nerved. Lemma 2-3-(3.5) mm, 7-9-nerved, upper and lower rows of hairs usually sparse or lacking between dense marginal tufts, upper row < lemma lobes, lower row overlapping upper, glabrous and shining elsewhere, rarely one or two hairs centrally; lobes 1-2.5-(3) mm, tapering to a minute to short fine awn; central awn 2.5-5.5-(6.5) mm, column 1-2 mm, occasionally not developed, ≈ palea and upper lemma hairs. Palea 3-4 mm, ≈ upper lemma hairs, interkeel glabrous, margins rarely with a few long hairs. Callus c. 0.5 mm, marginal hair tufts much overlapping lower lemma hairs. Rachilla 0.5-1 mm. Anthers 0.5-1.3 mm. Caryopsis 1.2-1.8 × 0.5-0.7 mm; embryo 0.5-0.7 mm; hilum 0.2-0.3 mm. 2n= 72. Plate 12B.
Taxonomic concepts
Danthonia buchananii Hook.f.
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Danthonia semiannularis var. breviseta Hook.f.
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Notodanthonia buchananii (Hook.f.) Zotov
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
Rytidosperma buchananii (Hook.f.) Connor & Edgar
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Identification keys
Metadata
bc5610e3-4c5d-41a5-9bc5-3f2ad99f4742
scientific name
Names_Plants
1 January 2000
20 March 2006