Aristida sciuroides Domin

First published in Biblioth. Bot. 20(85): 347 (1915)
This species is accepted
The native range of this species is Queensland. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Morphology General Habit
Perennial; caespitose; clumped densely. Culms 70-200 cm long; 3-6 -noded. Culm-internodes glaucous; smooth; distally glabrous. Lateral branches sparse. Leaf-sheaths smooth; glabrous on surface. Leaf-sheath oral hairs ciliate. Ligule a fringe of hairs; 0.2-0.5 mm long. Collar glabrous, or pubescent. Leaf-blades curled, or flexuous; 10-21 cm long; 2 mm wide. Leaf-blade surface scaberulous; rough adaxially; glabrous, or pilose; hairy adaxially.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle. Panicle open, or contracted; linear; 16-60 cm long; 1-4 cm wide. Spikelets solitary. Fertile spikelets pedicelled.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10.5-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; pubescent; acute.
Fertile
Spikelets comprising 1 fertile florets; without rhachilla extension. Spikelets lanceolate; subterete; 10.5-17 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus elongated; pubescent; acute.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; exceeding apex of florets; thinner than fertile lemma. Lower glume lanceolate; 10.5-17 mm long; 1 length of upper glume; membranous; 1-keeled; 3-5 -veined. Lower glume surface smooth to scabrous. Lower glume apex obtuse; awned; 1 -awned. Lower glume awn 1.5-4 mm long. Upper glume lanceolate; 10.5-17 mm long; 1.2-1.3 length of adjacent fertile lemma; membranous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex emarginate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; subterete; 8.5-13 mm long; coriaceous; pallid, or light brown, or purple; without keel; 3 -veined. Lemma surface smooth, or papillose; rough above. Lemma margins involute; covering most of palea; scabrous. Lemma apex acute; awned; 3 -awned. Principal lemma awn curved; flat below; 2 mm long overall; with 15-36 mm long limb; without a column; persistent. Lateral lemma awns spreading as much as principal; 11-30 mm long; shorter than principal. Palea 0.2 length of lemma; without keels.
Morphology Reproductive morphology Flowers
Anthers 3.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; sulcate on hilar side; 7.5-9 mm long. Hilum linear; 0.4-0.5 length of caryopsis.
Distribution
Australasia: Australia.
Reference
Aristideae. Simon 1993.
[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
  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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