Poaceae
Eriochrysis

Eriochrysis villosa Swallen

First published in Phytologia 14: 90 (1966)
This species is accepted
The native range of this species is S. Brazil. 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: threatened. Confidence: confident
[AERP]

Morphology General Habit
Perennial; caespitose. Culms erect; 100-150 cm long. Culm-nodes bearded. Leaves basal and cauline. Leaf-sheaths hirsute. Ligule an eciliate membrane; 1 mm long. Leaf-blades 14-30 cm long; 5-8 mm wide. Leaf-blade surface hirsute.
Morphology Reproductive morphology Inflorescences
Inflorescence composed of racemes. Racemes borne along a central axis; closely spaced; in a multilateral false spike; appressed; linear to ovate. Central inflorescence axis 15-22 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; 1-1.5 mm long; ciliate; with tawny hairs; tip discoid.
Morphology Reproductive morphology Inflorescences Spikelets
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acute; 3-4 mm long; 0.8-1 mm wide; falling entire; deciduous from the base and with accessory branch structures. Spikelet callus bearded; base truncate. Spikelet callus hairs tawny; 0.75 length of spikelet.
Fertile
Spikelets comprising 1 basal sterile florets; 1 fertile florets; without rhachilla extension. Spikelets elliptic; dorsally compressed; acute; 3-4 mm long; 0.8-1 mm wide; falling entire; deciduous from the base and with accessory branch structures. Spikelet callus bearded; base truncate. Spikelet callus hairs tawny; 0.75 length of spikelet.
Morphology Reproductive morphology Inflorescences Bracts Glume
Glumes dissimilar; exceeding apex of florets; firmer than fertile lemma; shiny. Lower glume elliptic; 3-4 mm long; 1 length of spikelet; coriaceous; without keels. Lower glume surface flat; villous; hairy above. Lower glume margins ciliate. Lower glume hairs tawny; 2-3 mm long. Lower glume apex acute.
Morphology Reproductive morphology Flowers Florets
Basal sterile florets barren; without significant palea. Lemma of lower sterile floret lanceolate; 4 mm long; hyaline; 0 -veined; without midvein; without lateral veins; ciliate on margins. Fertile lemma lanceolate; 2 mm long; hyaline; without keel; 0 -veined. Lemma margins ciliate. Palea absent or minute.
Morphology Reproductive morphology Flowers
Anthers 3.
Distribution
South America: 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

  • 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