Pappostipa nicorae (F.A.Roig) Romasch.

First published in J. Bot. Res. Inst. Texas 2: 183 (2008)
This species is accepted
The native range of this species is NW. Argentina. 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: threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose. Culms 10-19 cm long; 2 -noded. Culm-nodes swollen; glabrous. Leaf-sheaths longer than adjacent culm internode; smooth; glabrous on surface. Leaf-sheath oral hairs pubescent. Ligule an eciliate membrane. Leaf-blades convolute; 0.4-0.5 mm wide. Leaf-blade surface glabrous. Leaf-blade apex acuminate; pungent.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; comprising 9-12 fertile spikelets; subtended by an inflated leaf-sheath; embraced at base by subtending leaf. Panicle open; linear; 3-7 cm long; bearing few spikelets. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 2-8 mm long; pubescent.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 19-26 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.2-1.8 mm long; glabrous; acute.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 19-26 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 1.2-1.8 mm long; glabrous; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear; 19-26 mm long; 1 length of upper glume; membranous; much thinner on margins; yellow; 1-keeled; 3 -veined. Lower glume primary vein ciliolate. Lower glume surface pubescent. Lower glume apex acuminate. Upper glume linear; 19-26 mm long; membranous; with hyaline margins; yellow; 1-keeled; 3 -veined. Upper glume primary vein ciliolate. Upper glume surface pubescent. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; subterete; 7-8 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent; hairy below; with conspicuous apical hairs. Lemma margins convolute; covering most of palea. Lemma hairs 3 mm long. Lemma apex awned; 1 -awned. Principal lemma awn geniculate; 20-50 mm long overall; with 19-20 mm long limb; with twisted column. Column of lemma awn 10-13 mm long; plumose. Palea 6-7 mm long; 0 -veined; without keels. Palea surface hirsute.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; 4-4.5 mm long.
Distribution
South America: southern South America.
Reference
Stipeae. Roig 1997.
[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
  • Kew Backbone Distributions

    • 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
  • 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