Poaceae
Pappostipa

Pappostipa kieslingii (F.A.Roig) Ciald.

First published in Darwiniana 48: 172 (2010)
This species is accepted
The native range of this species is Argentina (San Juan). It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Butt sheaths red. Culms 30-50 cm long; 1-1.5 mm diam.; 2-3 -noded. Culm-internodes distally pilose. Ligule a ciliolate membrane; 3-5 mm long. Collar glabrous. Leaf-blades filiform; conduplicate; 15-19 cm long; 0.7-1 mm wide. Leaf-blade surface glabrous. Leaf-blade apex attenuate; pungent.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; comprising 9-21 fertile spikelets; embraced at base by subtending leaf. Panicle contracted; linear; 8-10 cm long; 1-1.5 cm wide; bearing few spikelets. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 20-23 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; curved; 1.8-1.9 mm long; pungent.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 20-23 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; curved; 1.8-1.9 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; 20-23 mm long; 1 length of upper glume; hyaline; without keels. Lower glume apex attenuate. Upper glume linear, or lanceolate; 20-23 mm long; 2-2.5 length of adjacent fertile lemma; hyaline; without keels. Upper glume apex attenuate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; laterally compressed; 8-9 mm long; coriaceous; without keel. Lemma midvein pubescent. Lemma surface pubescent; hairy below. Lemma margins convolute; covering most of palea. Lemma apex surmounted by a ring of hairs; with this appendage 3-3.5 mm long; awned; 1 -awned. Principal lemma awn geniculate; 20-40 mm long overall; with twisted column. Column of lemma awn plumose.
Distribution
South America: southern South America.
Reference
Stipeae. Fl San Juan 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