Eustachys petraea

(Sw.) Desv.
Common names: Pinewoods fingergrass
Synonyms: Chloris petraea
Treatment appears in FNA Volume 25. Treatment on page 220.

Culms 20-100 cm, erect, or decumbent and rooting at the nodes. Blades (2) 5-8 (26) cm long, 4-10 mm wide, folded, apices obtuse. Panicles with (1) 4-6 (11) branches; branches 2-11.5 cm. Spikelets 1.5-2.1 mm; florets 2-3. Lower glumes 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 1-1.2 mm. 2n = 40.

Distribution

Pa., Ga., Tex., La., Puerto Rico, Virgin Islands, Ala., N.C., S.C., Pacific Islands (Hawaii), Miss., Fla.

Discussion

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.

Selected References

None.

Lower Taxa

None.

"decumbent" is not a number.

... more about "Eustachys petraea"
purple +  and purple-red +
bifid +, bilobed +  and truncate +
Truncate (?) +, Rounded (?) +, Mucronate (?) +, Acute (?) +  and Obtuse (?) +
Cynthia Aulbach +
(Sw.) Desv. +
1 (?) +  and 3 (?) +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
triquetrous +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
pubescent +  and glabrous +
folded +  and flat +
4mm;10mm +
non-disarticulating +
spikelike +
with a few hairs +  and glabrous +
pale +  and slightly reddish-purple-tinged +
trigonous-ellipsoid +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
triangular +  and dome--shaped +
sometimes longer +
membranous +
Pinewoods fingergrass +
decumbent +  and erect +
flattened +
20 cm200 mm <br />0.2 m <br /> (100 cm1,000 mm <br />1 m <br />) +
not woody +
Pa. +, Ga. +, Tex. +, La. +, Puerto Rico +, Virgin Islands +, Ala. +, N.C. +, S.C. +, Pacific Islands (Hawaii) +, Miss. +  and Fla. +
not waisted +
capillary +
stipitate +  and staminate +
sometimes longer +
rudimentary +
2 +  and 3 +
round +  and compressed +
reduced +
shorter or longer +
subtending +
unequal +
uncinate +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
paniculate +  and racemose +
not absent +
cauline +  and basal +
empty +  and stipitate +
mucronate +  and cuneate +
1 cm10 mm <br />0.01 m <br /> (?) +
sometimes longer +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
obtuse +  and acute +
inconspicuous +
somewhat smaller +
0.1 cm1 mm <br />0.001 m <br /> (0.17 cm1.7 mm <br />0.0017 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
concealed +  and prominent +
2 +  and 1 +
dry +  and fleshy +
spikelike +
equitant +  and distichous +
compressed +  and keeled +
subsessile +  and sessile +
1 +  and 60 +
compressed +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.21 cm2.1 mm <br />0.0021 m <br />) +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
scabridulous +  and scabrous +
Chloris petraea +
Eustachys petraea +
Eustachys +
species +
membranous +
purplish +, pale +  and green +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
7 +  and 13 +
scabridulous +
stoloniferous +  and rhizomatous +
plant +  and cespitose +
aquatic +  and terrestrial +
dioecious +, monoecious +  and synoecious +