New! - Search other data sources for Stipa pungionata

Help - Wrong Description?

Kew Data Sources

Kew's Herbarium Catalogue
ePIC - Electronic Plant Information Centre

External Data Sources

Note - this takes you off of our website
Use your browser's back button to return to this page

GrassBase - The Online World Grass Flora

Descriptions

W.D. Clayton, M. Vorontsova, K.T. Harman & H. Williamson

© Copyright The Board of Trustees, Royal Botanic Gardens, Kew.

Stipa pungionata

HABIT Perennial; caespitose. Basal innovations intravaginal. Culms erect; 25 cm long; 1–2 -noded. Lateral branches lacking. Leaf-sheaths subequal to internodes; striately veined; glabrous on surface. Ligule a ciliolate membrane; 0.3 mm long; hyaline; truncate. Leaf-blades filiform; conduplicate; 7–12 cm long; 0.6–0.8 mm wide; stiff. Leaf-blade surface puberulous; hairy adaxially. Leaf-blade margins pubescent. Leaf-blade apex attenuate; pungent.

INFLORESCENCE Inflorescence a panicle; embraced at base by subtending leaf.

Panicle spiciform; linear; 6–9 cm long.

Spikelets solitary. Fertile spikelets pedicelled.

FERTILE SPIKELETS Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 11–12 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; 1.2 mm long; pubescent; acute.

GLUMES Glumes similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 11–12 mm long; 1 length of upper glume; hyaline; without keels; 1 -veined. Lower glume lateral veins absent. Lower glume apex acuminate. Upper glume lanceolate; 11–12 mm long; 2 length of adjacent fertile lemma; hyaline; without keels; 1 -veined. Upper glume lateral veins absent. Upper glume apex attenuate.

FLORETS Fertile lemma lanceolate; subterete; 5–5.5 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent. Lemma margins convolute; covering most of palea. Lemma apex surmounted by a ring of hairs; with this appendage 3 mm long; awned; 1 -awned. Principal lemma awn bigeniculate; 25–30 mm long overall; with twisted column. Palea tightly convolute around flower; 2 mm long; 2 -veined; without keels. Palea surface pubescent; hairy on back.

FLOWER Lodicules 2. Stigmas 2.

FRUIT Caryopsis with adherent pericarp; fusiform; 3.5 mm long. Hilum linear; 0.33 length of caryopsis.

DISTRIBUTION South America: southern South America.

NOTES Stipeae. Caro & Sanchez 2004.

Please cite this publication as detailed in How to Cite Version: 3rd February 2016.