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This species is accepted, and its native range is New Guinea.

[GB]
Morphology General Habit
Perennial; caespitose. Culms erect; 2-5 cm long; 0.5 mm diam.; 2 -noded. Culm-internodes striate; distally glabrous. Leaf-sheaths longer than adjacent culm internode; striately veined; papillose; glabrous on surface. Ligule an eciliate membrane; 0.5 mm long; entire, or erose; truncate, or obtuse. Leaf-blades straight, or curved; filiform; conduplicate; 1-2.8 cm long; 0.4-0.6 mm wide; stiff. Leaf-blade venation with 4 secondary veins. Leaf-blade surface papillose; glabrous. Leaf-blade apex obtuse; callose.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; shorter than basal leaves. Panicle open; oblong; 1.5-1.8 cm long; bearing few spikelets. Primary panicle branches ascending; simple. Panicle axis scabrous. Panicle branches stiff; angular; with prominent pulvini. Spikelets solitary. Fertile spikelets pedicelled. Pedicels angular; scabrous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.2-0.3 mm long; 0.1-0.2 length of lemma.
Fertile
Spikelets comprising 1 fertile florets; with a barren rhachilla extension. Spikelets ovate; laterally compressed; 1.8-2 mm long; breaking up at maturity; disarticulating below each fertile floret. Floret callus pubescent. Floret callus hairs 0.2-0.3 mm long; 0.1-0.2 length of lemma.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; firmer than fertile lemma; shiny. Lower glume lanceolate; 1.2-1.3 mm long; 1 length of upper glume; coriaceous; 1-keeled; 1 -veined. Lower glume lateral veins absent. Lower glume apex obtuse. Upper glume lanceolate; 1.2-1.5 mm long; 0.75 length of adjacent fertile lemma; coriaceous; 1-keeled; 1 -veined. Upper glume lateral veins absent. Upper glume apex acuminate.
Morphology Reproductive morphology Flowers Florets
Fertile lemma lanceolate; 1.8-2 mm long; chartaceous; without keel, or keeled; lightly keeled; 5 -veined. Lemma lateral veins obscure. Lemma apex obtuse; awned; 1 -awned. Principal lemma awn dorsal; arising 0.75 way up back of lemma; straight; 1.3 mm long overall. Palea 1 length of lemma; 2 -veined. Palea keels contiguous above a sulcus. Rhachilla extension 1 mm long; pilose.
Morphology Reproductive morphology Flowers
Lodicules 2; 0.8 mm long. Anthers 3; 0.6 mm long. Stigmas 2.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp. Hilum punctiform.
Distribution
Asia-tropical: Papuasia.
Reference
Aveneae. Reeder 1997.

Native to:

New Guinea

Calamagrostis pusilla Reeder appears in other Kew resources:

First published in J. Arnold Arbor. 31: 322 (1950)

Accepted by

  • Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Henty, E.E. (1969). A manual of the grasses of New Guinea: 1-215. Division of Botany, Dpt. of Forests, LAE, New Guinea.

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 Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0