Poa senex Edgar

Species

Angiosperms > Poales > Poaceae > Poa

Characteristics

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.
Life form perennial
Growth form herb
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Sexuality hermaphrodite
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Usage

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Cultivation

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Distribution

Poa senex world distribution map, present in New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:931134-1
WFO ID wfo-0000893772
COL ID 4KMS4
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Poa senex