Poaceae
Eriochrysis

Eriochrysis warmingiana (Hack.) Kuhlm.

First published in Relat. Commiss. Linhas Telegr. Estratég. Matto Grosso Amazonas 5(11): 29 (1922)
This species is accepted
The native range of this species is Brazil to Bolivia. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: not threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose. Butt sheaths persistent and investing base of culm; with compacted dead sheaths. Culms erect; 100-220 cm long. Culm-nodes pubescent. Leaf-sheath oral hairs bearded. Ligule an eciliate membrane. Leaf-blades involute; 30-60 cm long; 2-4 mm wide.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes numerous; borne along a central axis; ascending; linear; 2.5-4.5 cm long. Central inflorescence axis 15-30 cm long. Rhachis fragile at the nodes; subterete. Rhachis internodes linear. Rhachis internode tip clavate. Spikelets in pairs. Fertile spikelets sessile and pedicelled; 2 in the cluster; the upper smaller (female). Pedicels linear; puberulous; tip widened.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-5 mm long; falling entire; deciduous from the base and with accessory branch structures. Spikelet callus bearded; base truncate. Spikelet callus hairs white; 1.5 mm long; 0.5 length of spikelet.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets lanceolate; dorsally compressed; 4-5 mm long; falling entire; deciduous from the base and with accessory branch structures. Spikelet callus bearded; base truncate. Spikelet callus hairs white; 1.5 mm long; 0.5 length of spikelet.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; reaching apex of florets; firmer than fertile lemma; shiny. Lower glume lanceolate; 4-5 mm long; 1 length of spikelet; cartilaginous; without keels. Lower glume lateral veins obscure. Lower glume surface flat; glabrous. Lower glume margins ciliate. Lower glume hairs white; 1-1.5 mm long. Lower glume apex acute. Upper glume lanceolate; cartilaginous; 1-keeled. Upper glume margins ciliate. Upper glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret oblong; 1 length of spikelet; hyaline; 0 -veined; without midvein; without lateral veins; ciliate on margins. Fertile lemma oblong; 2 mm long; hyaline; without keel; 0 -veined. Lemma margins ciliolate. Palea absent or minute.
Morphology Reproductive morphology Flowers
Anthers 3.
Distribution
South America: western South America and Brazil.
Reference
Andropogoneae. FW 1995.
[GB]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • 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

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • 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