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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
from FNA
AL; FL; GA
[WildflowerSearch map]
[BONAP county map]
from FNA
AL; FL; GA; LA; MS; NC; PA; SC; TX; HI; PR; Virgin Islands
[WildflowerSearch map]
[BONAP county map]
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
E. caribaea, E. distichophylla, E. glauca, E. neglecta, E. petraea, E. retusa
E. caribaea, E. distichophylla, E. floridana, E. glauca, E. neglecta, E. retusa
Synonyms Chloris floridana Chloris petraea
Name authority Chapm. (Sw.) Desv.
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