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This species is accepted, and its native range is Hungary to Balkan Peninsula, Krym.
A specimen from Kew's Herbarium

[GB]
Morphology General Habit
Perennial; caespitose; clumped densely. Culms erect; slender; 15-58 cm long; 1-2 -noded. Culm-internodes elliptical in section (slightly at base). Lateral branches lacking. Leaves mostly basal. Leaf-sheaths smooth; glabrous on surface. Ligule an eciliate membrane; 1-10 mm long; acuminate. Leaf-blades conduplicate; 3-10 cm long; 1-4 mm wide; glaucous. Leaf-blade apex acute.
Morphology Reproductive morphology Inflorescences
Inflorescence a panicle; comprising 7-17 fertile spikelets. Panicle open; oblong; 4-12.5 cm long; 0.5-3 cm wide. Spikelets solitary. Fertile spikelets pedicelled. Pedicels 1-7 mm long; scaberulous.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 14-24 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-2.5 mm long; glabrous. Floret callus pubescent. Floret callus hairs 0.5-1 mm long.
Fertile
Spikelets comprising 3-6 fertile florets; with diminished florets at the apex. Spikelets oblong; laterally compressed; 14-24 mm long; breaking up at maturity; disarticulating below each fertile floret. Rhachilla internodes 1-2.5 mm long; glabrous. Floret callus pubescent. Floret callus hairs 0.5-1 mm long.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes persistent; similar; shorter than spikelet; thinner than fertile lemma; shiny. Lower glume lanceolate; 8-11 mm long; 0.75 length of upper glume; membranous; 1-keeled; 3 -veined. Lower glume apex acute. Upper glume lanceolate; 10-13 mm long; 1 length of adjacent fertile lemma; membranous; 1-keeled; 3 -veined. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Fertile lemma oblong; 9-13 mm long; cartilaginous; light brown, or red; without keel; 5 -veined. Lemma lateral veins prominent. Lemma surface scabrous. Lemma apex dentate; 2 -fid; acute; awned; 1 -awned. Principal lemma awn dorsal; arising 0.5 way up back of lemma; geniculate; flat below; 16 mm long overall; with twisted column. Palea 7.5-10 mm long. Palea keels eciliate. Apical sterile florets resembling fertile though underdeveloped.
Morphology Reproductive morphology Flowers
Anthers 3; 4-6 mm long. Ovary pubescent on apex.
Morphology Reproductive morphology Fruits
Caryopsis with adherent pericarp; hairy at apex. Hilum linear.
Distribution
Europe: central, southeastern, and eastern. Asia-temperate: western Asia.
Reference
Aveneae. Fl Turk 1993.

Native to:

Bulgaria, Greece, Hungary, Krym, Romania, Turkey-in-Europe, Yugoslavia

Helictochloa compressa (Heuff.) Romero Zarco appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Heuffel, J.A. [s.n.], Hungary Helictotrichon compressum K000808472
Heuffel, J.A. [s.n.], Hungary Helictotrichon compressum K000808473

First published in Candollea 66: 102 (2011)

Accepted by

  • Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. (2021). The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. https://doi.org/10.1038/s41597-021-00997-6 Scientific Data 8: 215.

Literature

Kew Backbone Distributions

  • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.

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 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