Poaceae
Stipagrostis

Stipagrostis pennata (Trin.) De Winter

First published in Kirkia 3: 135 (1963)
This species is accepted
The native range of this species is E. Europe to Xinjiang, Caucasus to Afghanistan, China (Yunnan). 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: confident
[AERP]

Morphology General Habit
Perennial. Rhizomes elongated. Culms erect; 20-45 cm long. Lateral branches lacking. Leaf-sheaths antrorsely scabrous. Ligule a fringe of hairs. Leaf-blades filiform, or linear; flat, or involute; 5-30 cm long; 1-5 mm wide; glaucous. Leaf-blade surface scaberulous; rough adaxially. Leaf-blade apex acuminate; pungent.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; exserted, or embraced at base by subtending leaf. Panicle open; ovate; effuse; 10-20 cm long; 8-15 cm wide. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1-1.5 mm long; bearded; hairy on the margins; acute.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 16 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1-1.5 mm long; bearded; hairy on the margins; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 16 mm long; 1.1-1.2 length of upper glume; membranous; without keels; 3 -veined. Lower glume apex acuminate. Upper glume lanceolate; 13-14 mm long; 2.5 length of adjacent fertile lemma; membranous; without keels; 3 -veined. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 5-6 mm long; coriaceous; without keel; 3 -veined. Lemma margins convolute; covering most of palea. Lemma apex acute; awned; 3 -awned. Principal lemma awn 3-branched; with 10-15 mm long limb; with twisted column; deciduous; abscissing from top of lemma; limb plumose. Column of lemma awn 1-2 mm long. Lateral lemma awns 10-15 mm long; subequal to principal; plumose. Palea 0.33 length of lemma; without keels.
Distribution
Europe: eastern. Asia-temperate: Siberia, Soviet Middle Asia, western Asia, and China.
Reference
Aristideae. Fl Iran 1993.
Diagnostic
Awn articulation oblique.
[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 Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. 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

  • World Checklist of Vascular plants (WCVP)

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. 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