Eustachys floridana |
Eustachys retusa |
|
---|---|---|
Florida fingergrass, twospike fingergrass |
Argentine fingergrass |
|
Culms | 50-100 cm, erect. |
30-80 cm, erect, or decumbent and rooting at the nodes. |
Blades | to 30 cm long, to 8.2 mm wide, apices acute. |
6-12 cm long, 5-10 mm wide, usually folded, apices obtuse. |
Panicles | with 1-3 branches; branches 5-13 cm. |
with (6)8-15 branches; branches 4-10 cm, straight, somewhat stiff. |
Spikelets | 3-3.7 mm; florets 3. |
1.5-2.1 mm; florets 2. |
Lower glumes | 1.8-2 mm, apices acute to obtuse; upper glumes 2.2-3.1 mm, oblanceolate, truncate to occasionally bilobed, lobes obtuse, awned from between the lobes, awns 0.5-1 mm; calluses with tufts of hairs, hairs to 0.6 mm; lowest lemmas 2.9-3.7 mm, ovate, tan to light brown at maturity, lateral veins and keels with appressed, whitish to golden hairs, hairs to 0.7 mm, apices acute, awned, awns 0.4-0.6 mm, arising from just below the apices; second lemmas 1.5-2.6 mm, obovate, acute, mucronate. |
1.1-1.3 mm, linear-lanceolate, acute; upper glumes 1.3-1.5 mm, oblanceolate, apices truncate or bilobed, mucronate, mucros to 0.4 mm; calluses with a few short hairs; lowest lemmas 1.7-2 mm, lanceolate to ovate, not strongly keeled, midveins glabrous, lateral veins with widely spreading, white, 1-2 mm hairs, apices acute to mucronate; second lemmas 1.1-1.2 mm, broadly cuneate, apices truncate. |
Caryopses | about 1.7 mm. |
about 1 mm. |
2n | = unknown. |
= 40. |
Eustachys floridana |
Eustachys retusa |
|
Distribution |
AL; FL; GA
|
FL; GA; NJ; NY; SC; TX |
Discussion | Eustachys floridana grows in dry, sandy woods and old fields. It is endemic to the southeastern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eustachys retusa is native to South America, but it is now established along roadsides, sandy fields, and waste areas in the southeastern United States. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 222. | FNA vol. 25, p. 222. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eustachys | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eustachys |
Sibling taxa | ||
Synonyms | Chloris floridana | Chloris argentina |
Name authority | Chapm. | (Lag.) Kunth |
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