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Eriochloa polystachya

Eriochloa polystachya Kunth  
Family: Poaceae
Carib Grass, more...Caribbean Cupgrass
[Eriochloa punctata var. subglabra (Nash) Urb., moreEriochloa subglabra Hitchcock, Helopus polystachys (Kunth) Trin. ex Steud., Milium polystachyon (Kunth) Spreng.]
Eriochloa polystachya image
Jose Hernandez
  • FNA
  • Resources
Robert B. Shaw, Robert D. Webster, Christine M. Bern. Flora of North America

Plants perennial; cespitose, stoloniferous. Culms 100-200 cm, decumbent, rooting at the lower nodes; internodes glabrous; nodes 4-10, densely pilose. Sheaths chartaceous to cartilaginous, lower sheaths with papillose-based hairs, upper sheaths glabrous; collars hairy; ligules 0.6-1.2 mm; blades 6-28 cm long, 6-18 mm wide, linear, flat, straight, ascending or drooping, glabrous adaxially. Panicles 8-20 cm long, 41-90 mm wide, open; rachises sparsely pilose to hirsute; branches (5)10-15(18), 2-6 cm long, 0.4-0.6 mm wide, pubescent to setose, not winged, spikelets in unequally pedicellate pairs; pedicels 0.5-1 mm, pubescent, apices glabrous. Spikelets 3.2-3.9 mm long, 1.1-1.3 mm wide, lanceolate to ovate. Lower glumes present as a membranous extension of the calluses; upper glumes equaling the lower lemmas, hairy, lanceolate to ovate, 5-veined, acute, unawned; lower lemmas 3-3.5 mm long, 1.1-1.3 mm wide, lanceolate to ovate, glabrous or sparsely pubescent, 5-veined, acute, unawned; lower paleas fully developed or absent; anthers absent or 3; upper lemmas 2.2-2.6 mm, indurate, elliptic, rounded, mucronate, mucros less than 0.2 mm; upper paleas 2-2.5 mm, indurate. 2n = 36.

Eriochloa polystachya is native to the West Indies, Costa Rica, Honduras, and South America. It was introduced into the United States as a forage crop and is now established at some locations in Florida and Texas.

Eriochloa polystachya
Open Interactive Map
Eriochloa polystachya image
Jose Hernandez
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
University of Florida Herbarium
Eriochloa polystachya image
University of Florida Herbarium
Eriochloa polystachya image
University of Florida Herbarium
Eriochloa polystachya image
Eriochloa polystachya image
University of Florida Herbarium
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
University of Florida Herbarium
Eriochloa polystachya image
Eriochloa polystachya image
University of Florida Herbarium
Eriochloa polystachya image
University of Florida Herbarium
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
Eriochloa polystachya image
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This project was made possible in part by the Institute of Museum and Library Services [MG-70-19-0057-19].

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