Poaceae
Agrostis

Agrostis personata Edgar

First published in New Zealand J. Bot. 29: 149 (1991)
This species is accepted
The native range of this species is New Zealand. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped loosely. Basal innovations extravaginal. Culms geniculately ascending; 6.5-30 cm long. Leaf-sheaths smooth. Ligule an eciliate membrane; 0.8-2 mm long; scaberulous on abaxial surface; erose; truncate, or obtuse. Leaf-blades flat, or conduplicate, or involute; 2-8 cm long; 0.5-1.5 mm wide; flaccid. Leaf-blade surface scabrous; rough adaxially, or on both sides. Leaf-blade margins smooth, or scaberulous. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Peduncle smooth. Panicle open; lanceolate, or pyramidal; 4.5-8.5 cm long. Primary panicle branches spreading. Panicle axis scaberulous. Panicle branches capillary; with occasional prickles. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scaberulous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 2-3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; laterally compressed; 2-3.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; firmer than fertile lemma; gaping. Lower glume lanceolate; 2-3.5 mm long; 1 length of upper glume; membranous; much thinner on margins; 1-keeled; 1 -veined. Lower glume primary vein scabrous. Lower glume lateral veins absent. Lower glume apex acute. Upper glume lanceolate; 2-3.5 mm long; membranous; with hyaline margins; 1-keeled; 1 -veined. Upper glume primary vein scabrous. Upper glume lateral veins absent. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma ovate; 1.4-2 mm long; hyaline; without keel; 5 -veined. Lemma lateral veins extending close to apex. Lemma apex entire, or erose; truncate; muticous, or awned; 1 -awned. Principal lemma awn dorsal; arising 0.5-0.66 way up back of lemma; straight; 1-3 mm long overall. Palea 0.3-0.6 mm long; 0.25 length of lemma; hyaline.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.3-0.6 mm long; membranous. Anthers 3; 0.4-0.7 mm long.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 1-1.5 mm long. Hilum linear.
Distribution
Australasia: New Zealand.
Reference
Aveneae. Edgar 1994.
[GB]

Sources

  • GrassBase - The Online World Grass Flora

    • Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. (2006 onwards). GrassBase - The Online World Grass Flora.
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2023. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2022 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0