Poa senex Edgar
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Poa senex Edgar, New Zealand J. Bot. 24: 476-479, Fig 11 & 26 (1986)
Poa senex Edgar
Nomenclature
Edgar
Edgar
1986
476-479, Fig 11 & 26
ICN
Poa senex Edgar
species
Poa senex
Classification
Descriptions
Poa senex Edgar
Small, stoloniferous perennial, almost completely smooth and glabrous, forming brownishgreen, extravaginal tufts, c. 5-12 cm tall, culms overtopping leaves; laminae persistent. Sheaths membranous, smooth, nerved, keeled; ligule 0.5- 1.5 mm long, entire, smooth across tapered top, and abaxially smooth; lamina 1-3.5 cm × 1-2 mm, flat or folded, subcoriaceous, smooth apart from finely scabrous margins and midrib near curved tip. Culms 3-12 cm long, smooth, very slender, erect. Panicle 1-3 cm long, ± open or contracted, with few, ovate spikelets; rachis, branchlets and pedicels slender, with sparse, scattered prickle-teeth. Spikelets 2-3 mm long, 2-3-flowered, light green, tinged purple. Glumes unequal, submembranous with hyaline margins, a few prickle-teeth on midnerve near tip; lower glume 1.5-2 mm long, 1- nerved, narrow-lanceolate, acute, upper 2-2.5 mm long, (1)-3-nerved, elliptic-oblong, subobtuse to obtuse. Lemma 2-2.5 mm long, 5-nerved, ellipticovate, obtuse, smooth apart from a few prickle-teeth on midnerve near tip, midnerve with short crinkled hairs to c. ½ length, lateral nerves with a few hairs near base, internerves glabrous. Palea 1.5- 1.8 mm long, smooth apart from minutely scabrous keels. Lodicules c. 0.1 mm long. Callus with a few wispy hairs. Rachilla c. 0.5 mm long, smooth. Anthers 0.3-0.4 mm long. Caryopsis c. 1 × 0.5 mm. Endemic
Gramen perenne alpinum parvum stoloniferum spiculis parvis antherisque brevissimis, primo adspcctu Poac sublimi et P. incrassatae simile ab utraque specie differt lemmatis nervis pilis indutis, a priore etiam panicula contractiore, ramulisque minus nliformibus, a posteriore foliis plerumque latioribus, paniculae rhachidc ramulique paene laevibus. lemmatis apice piano non paene cucullato internervisque laevibus non minute papillosis.
Poa senex Edgar
Small, stoloniferous, almost completely glabrous, brownish green perennial tufts, c. 5-15-(25) cm, culms overtopping leaves; branching extravaginal; leaf-blades persistent. Leaf-sheath membranous, glabrous, ribbed, keeled. Ligule 0.5-1.5 mm, entire, tapered, glabrous throughout. Leaf-blade 1-3.5 cm × 1-2 mm, flat or folded, subcoriaceous, smooth, but midrib scabrid near curved tip; margins finely scabrid. Culm 3-15-(20) cm, very slender, erect or geniculate at base, internodes glabrous. Panicle 1-3 cm, ± open or contracted, with few, ovate spikelets; rachis, branches and pedicels slender with sparse, scattered prickle-teeth. Spikelets 2-3-(3.5) mm, 2-3-flowered, light green, tinged purple. Glumes unequal, submembranous with hyaline margins, a few prickle-teeth on midnerve near tip; lower 1.5-2 mm, 1-nerved, narrow-lanceolate, acute, upper 2-2.5 mm, (1)-3-nerved, elliptic-oblong, subobtuse to obtuse. Lemma 2-2.5 mm, 5-nerved, elliptic-ovate, obtuse, glabrous, but midnerve with short crinkled hairs to c. ½ length and sparsely prickle-toothed near tip, lateral nerves with a few hairs near base. Palea 1.5-1.8 mm, keels minutely scabrid, interkeel glabrous. Callus with a few wispy hairs. Rachilla c. 0.5 mm, glabrous. Lodicules c. 0.1 mm. Anthers 0.3-0.4 mm. Gynoecium: ovary 0.4-0.5 mm; stigma-styles 0.8-1 mm. Caryopsis c. 1 × 0.5 mm.
Taxonomic concepts
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Metadata
576bf6d1-1a84-4539-8c73-bc679215f831
scientific name
Names_Plants
1 January 2000
3 May 2006