Poa tonsa Edgar
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Poa tonsa Edgar, New Zealand J. Bot. 24: 477, Fig 10 & 18 (1986)
Poa tonsa Edgar
Nomenclature
Edgar
Edgar
1986
477, Fig 10 & 18
ICN
Poa tonsa Edgar
species
Poa tonsa
Classification
Descriptions
Poa tonsa Edgar
Small, compact perennial, forming light green tufts to c. 15 cm tall; new shoots intravaginal, with a few extravaginal shoots at base; laminae persistent. Sheaths light creamy-brown to reddish-purple, membranous, nerved, smooth or papillose above, especially on keel; ligule 0.5-1 mm long, tapered at centre, erose, abaxially ciliate; lamina 1-3.5 cm × 1-2 mm, flat, subcoriaceous, adaxially minutely scabrous, abaxially smooth, margins densely, finely scabrous, tip curved. Culms 2-10 cm tall, slender, purplish, smooth or slightly scabrous below panicle, usually with one short cauline leaf. Panicle (1)- 2-4.5-(7)cm long, open; rachis slender, finely, sparsely scabrous, branchlets few, filiform, finely scabrous, tipped by 1-2 relatively large, ovate spikelets. Spikelets 3-4.5 mm long, 3-5-flowered, purplish- green. Glumes subequal, 1.5-2 mm long, with wide hyaline margins, scabrous on midnerve; lower glume 1-3-nerved, ovate-elliptic, acute, upper 3- nerved, ovate, obtuse, often scabrous on lateral nerves and on internerves near tip and hyaline margin. Lemma 2-2.5 mm long, 5-7-nerved, ovate, obtuse, ciliate in lower ½, scabrous above with midnerve closely distinctly scabrous, hyaline margins very wide. Palea 1.5-2 mm long, ciliate between scabrous keels and with a few hairs on margins. Lodicules c. 0.2 mm long. Callus with a few wispy hairs. Rachilla c. 0.5 mm long, smooth. Anthers 0.3-0.6 mm long. Caryopsis c. 1-1.5 × 0.5 mm. Endemic
Gramen perenne, parvum, pallido-viride, panicula gracili folia plana superanti, lemmatibus pilosis in dimidio inferiore antherisque brevissimis; Poam lindsayi multo simulans differt autem foliis planioribus, lemmatibus amplioribus minus pilosisque pilis ad margincs hyalinos latos non attingentibus.
Poa tonsa Edgar
Small, compact, light green perennial tufts, to c. 15 cm; branching intravaginal, sometimes extravaginal at plant base; leaf-blades persistent. Leaf-sheath light creamy brown to reddish purple, membranous, ribbed, smooth or papillose above, especially on keel. Ligule 0.5-1 mm, apically glabrous, centrally tapered, erose, abaxially ciliate. Leaf-blade 1-3.5 cm × 1-2 mm, flat, subcoriaceous, abaxially smooth, adaxially minutely scabrid; margins densely, finely scabrid, tip curved. Culm 2-10 cm, slender, purplish, usually with one short cauline leaf; internodes smooth or slightly scabrid below panicle. Panicle (1)-2-4.5-(7) cm, open; rachis slender, finely, sparsely scabrid, branches few, filiform, finely scabrid, tipped by 1-2 relatively large, ovate spikelets. Spikelets 3-4.5 mm, 3-5-flowered, purplish green. Glumes subequal, 1.5-2 mm, with wide hyaline margins, scabrid on midnerve; lower 1-3-nerved, ovate-elliptic, acute, upper 3-nerved, ovate, obtuse, often scabrid on lateral nerves and on internerves near tip and margin. Lemma 2-2.5 mm, 5-7-nerved, ovate, obtuse, minutely hairy in lower ½, scabrid above with midnerve closely distinctly scabrid; margins hyaline, very wide. Palea 1.5-2 mm, keels scabrid, interkeel with minute hairs and flanks with a few hairs. Callus with a few wispy hairs. Rachilla c. 0.5 mm, glabrous. Lodicules c. 0.2 mm. Anthers 0.3-0.6 mm. Gynoecium: ovary 0.5 mm; stigma-styles c. 1 mm. Caryopsis c. 1-1.5 × 0.5 mm.
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Metadata
e66dac87-054b-4c24-ae57-83549b6df9be
scientific name
Names_Plants
1 January 2000
3 May 2006