Eustachys floridana |
Eustachys petraea |
|
---|---|---|
Florida fingergrass, twospike fingergrass |
pinewoods fingergrass |
|
Culms | 50-100 cm, erect. |
20-100 cm, erect, or decumbent and rooting at the nodes. |
Blades | to 30 cm long, to 8.2 mm wide, apices acute. |
(2)5-8(26) cm long, 4-10 mm wide, folded, apices obtuse. |
Panicles | with 1-3 branches; branches 5-13 cm. |
with (1)4-6(11) branches; branches 2-11.5 cm. |
Spikelets | 3-3.7 mm; florets 3. |
1.5-2.1 mm; florets 2-3. |
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. |
1-1.7 mm, apices acute; upper glumes 1.5-1.8 mm, obovate, bilobed, lobes acute or obtuse, awned from between the lobes, awns 0.3-0.9 mm; calluses glabrous or with a few hairs, hairs to 0.3 mm; lowest lemmas 1.5-2 mm, ovate, dark brown at maturity, lateral veins and keels with appressed, brown hairs, hairs to 0.4 mm, apices mucronate; second lemmas about 1 mm, broadly cuneate, occasionally mucronate, apices rounded or truncate. |
Caryopses | about 1.7 mm. |
1-1.2 mm. |
2n | = unknown. |
= 40. |
Eustachys floridana |
Eustachys petraea |
|
Distribution |
AL; FL; GA
|
AL; FL; GA; LA; MS; NC; PA; SC; TX; HI; PR; Virgin Islands
|
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 petraea grows on dunes and open sandy areas and along roadsides and salt and brackish marshes. Its range extends south from the United States through Mexico to Panama. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 25, p. 222. | FNA vol. 25, p. 220. |
Parent taxa | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eustachys | Poaceae > subfam. Chloridoideae > tribe Cynodonteae > Eustachys |
Sibling taxa | ||
Synonyms | Chloris floridana | Chloris petraea |
Name authority | Chapm. | (Sw.) Desv. |
Web links |