Poaceae
Agrostis

Agrostis zenkeri Trin.

First published in Mém. Acad. Imp. Sci. Saint-Pétersbourg, Sér. 6, Sci. Math., Seconde Pt. Sci. Nat. 6(2, Bot.): 363 (1841)
This species is accepted
The native range of this species is SW. India (Nilgiri Hills). It is a perennial and grows primarily in the temperate biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: low confidence
[AERP]

Morphology General Habit
Annual; caespitose. Culms erect, or geniculately ascending; 30-60 cm long. Culm-internodes smooth, or scaberulous; distally glabrous. Lateral branches sparse, or ample. Leaf-sheaths tight; striately veined; scaberulous; glabrous on surface. Ligule an eciliate membrane; 1-2 mm long; scaberulous on abaxial surface. Leaf-blades 5-11 cm long; 3-5 mm wide. Leaf-blade surface scaberulous, or scabrous; rough on both sides. Leaf-blade margins scabrous. Leaf-blade apex acuminate.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open; elliptic, or ovate; 15-32 cm long; 10 cm wide. Primary panicle branches spreading; 3-4 -nate. Panicle axis smooth; glabrous. Panicle branches scaberulous. Spikelets solitary. Fertile spikelets pedicelled. Pedicels scaberulous; tip widened.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.5 length of lemma.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets lanceolate; laterally compressed; 2-2.5 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pilose. Floret callus hairs 0.5 length of lemma.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; with lower wider than upper; reaching apex of florets; thinner than fertile lemma; gaping. Lower glume lanceolate; 2.5 mm long; 1.1 length of upper glume; membranous; 1-keeled; 1 -veined. Lower glume primary vein scaberulous. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 2 mm long; 0.9 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume primary vein scaberulous. Upper glume lateral veins absent. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic, or ovate; 2.5 mm long; 2 mm wide; chartaceous; without keel; 3 -veined. Lemma lateral veins prominent. Lemma surface scaberulous. Lemma apex muticous, or awned; 1 -awned. Principal lemma awn subapical; 0.5 mm long overall; not or scarcely exserted from spikelet. Palea 0.75 length of lemma; hyaline; 2 -veined. Rhachilla extension pilose.
Morphology Reproductive morphology Flowers
Anthers 3; 0.5-0.8 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp.
Distribution
Asia-tropical: India.
Reference
Aveneae. Bor 2006.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 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 2026. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0