Poaceae
Pappostipa

Pappostipa colloncurensis (F.A.Roig) Ciald.

First published in Darwiniana 48: 171 (2010)
This species is accepted
The native range of this species is Argentina (Neuquén). It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Butt sheaths red. Culms erect; 50-60 cm long; 2-3 -noded. Culm-internodes distally glabrous. Leaf-sheaths 13-16 cm long. Leaf-sheath oral hairs ciliate. Ligule a ciliolate membrane. Collar glabrous. Leaf-blades filiform; conduplicate; 20-30 cm long. Leaf-blade surface glabrous. Leaf-blade apex attenuate; muticous.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle contracted; lanceolate; 11-15 cm long; 2-3 cm wide. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 30-37 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; curved; 2.5 mm long; pungent.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 30-37 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; curved; 2.5 mm long; pungent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume linear, or lanceolate; 30-37 mm long; 1 length of upper glume; hyaline; without keels. Lower glume primary vein ciliolate. Lower glume apex acuminate. Upper glume linear, or lanceolate; 30-33 mm long; 2 length of adjacent fertile lemma; hyaline; without keels. Upper glume primary vein ciliolate. Upper glume apex attenuate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; subterete; 12-14 mm long; coriaceous; without keel. Lemma surface pilose; hairy all along. Lemma margins convolute; covering most of palea. Lemma apex surmounted by a ring of hairs; with this appendage 1 mm long; awned; 1 -awned. Principal lemma awn geniculate; 45-55 mm long overall; with 28-351 mm long limb; with twisted column. Column of lemma awn 17-20 mm long; ciliate. Palea 8.6 mm long; 0.66 length of lemma; without keels. Palea surface pilose; hairy on back.
Morphology Reproductive morphology Flowers
Lodicules 2.
Distribution
South America: southern South America.
Reference
Stipeae. Roig 2011.
[GB]

Sources

  • 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