Poaceae
Stipa
Stipa macroglossa

Stipa macroglossa subsp. kazachstanica (Kotukhov) M.Nobis

First published in Pl. Syst. Evol. 299: 1352 (2013)
This subspecies is accepted
The native range of this subspecies is Central Asia to Xinjiang. It is a perennial and grows primarily in the temperate biome.

Descriptions

Morphology General Habit
Perennial; caespitose. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms 40-50 cm long. Culm-internodes distally pubescent. Leaf-sheaths smooth, or scaberulous. Ligule a ciliolate membrane; 4.5 mm long; 1.2-7 mm long on basal shoots; pubescent on abaxial surface. Leaf-blades filiform; conduplicate; 0.2-0.3 mm wide. Leaf-blade surface smooth, or scaberulous; rough abaxially; puberulous; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; comprising 5-7 fertile spikelets. Panicle open; lanceolate; 10-15 cm long; bearing few spikelets. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 45-56 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 2.5-3 mm long; pubescent; pungent.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 45-56 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; 2.5-3 mm long; pubescent; pungent.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 45-56 mm long; 1 length of upper glume; membranous; without keels. Lower glume apex attenuate. Upper glume lanceolate; 45-56 mm long; membranous; without keels. Upper glume apex attenuate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma elliptic; subterete; 10-12 mm long; coriaceous; without keel. Lemma surface pubescent; hairy in lines (6 lines). Lemma margins convolute; covering most of palea. Lemma apex awned; 1 -awned. Principal lemma awn bigeniculate; 100-200 mm long overall; with twisted column; limb plumose; with 4.5-5 mm long hairs. Column of lemma awn 20-27 mm long; glabrous. Palea without keels.
Morphology Reproductive morphology Flowers
Anthers 3.
Distribution
Asia-temperate: Siberia.
Reference
Stipeae. Kotuchov 2006.
[GB]

Morphology General Habit
Perennial; caespitose; clumped moderately. Culms 30-50 cm long. Culm-internodes distally glabrous, or pubescent. Ligule an eciliate membrane; 4 mm long. Leaf-blades filiform; convolute; 0.4-0.7 mm wide. Leaf-blade surface ribbed.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; embraced at base by subtending leaf. Panicle open; linear; 6-10 cm long. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 40-50 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent; acute.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 40-50 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus evident; pubescent; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 1 length of upper glume; membranous; without keels. Lower glume apex acuminate. Upper glume lanceolate; 40-50 mm long; membranous; without keels. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; subterete; 12-14 mm long; coriaceous; without keel; 5 -veined. Lemma surface pubescent; hairy below; hairy in lines. Lemma margins convolute; covering most of palea. Lemma apex awned; 1 -awned. Principal lemma awn bigeniculate; 200-250 mm long overall; with twisted column; limb plumose; with 6-7 mm long hairs. Column of lemma awn 40-50 mm long; pubescent; with 1.5 mm long hairs. Palea without keels.
Morphology Reproductive morphology Flowers
Anthers 3. Stigmas 2. Ovary glabrous.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; fusiform. Hilum linear.
Distribution
Asia-temperate: Soviet Middle Asia.
Reference
Stipeae. Golosk 1995.
[GB]

Sources

  • 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