Luzula echinata

(Small) Hermann

Rhodora 40: 84. 1938.

IllustratedEndemic
Treatment appears in FNA Volume 22.
Revision as of 23:55, 29 July 2020 by imported>Volume Importer
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Rhizomes to 1.5 cm or shorter, knotty. Culms loosely cespitose, 15–45 cm, base sometimes swollen. Leaves: basal leaves 4–15 cm × 2–7 mm, margins pilose to sparsely hairy, apex not callous. Inflorescences: glomerules 4–15, central glomerules sessile or nearly sessile, broadly conic or globose (often loosely flowered); peduncles straight, divergent by as much as 90°, to 9 cm; proximal inflorescence bract leaflike, not longer than inflorescence; bracts and bracteoles clear, variously cut. Flowers: tepals greenish to pale or dark-brown, usually with clear margins and apex, 2.8–4 mm; anthers ca. 2–5 times filament length; stigmas 2–3 times length of styles. Capsules pale to dark-brown, obovoid to subglobose, usually shorter than tepals. Seeds dark-brown, globose, 1.2–1.6 mm; caruncle 0.5–0.6 mm. 2n = 12.


Phenology: Flowering and fruiting spring–early summer.
Habitat: Bluffs, wooded slopes, alluvial woods, streamsides, under hardwoods and occasionally in clearings
Elevation: 50–800 m

Distribution

V22 384-distribution-map.jpg

Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa., Ky., La., Md., Mass., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tenn., Tex., Va., W.Va.

Discussion

Luzula echinata has knotty rhizomes to 1.5 cm; the bases of the culms are sometimes swollen. Flowers are characterized by stigmas that exceed styles by 2–3 times.

Selected References

None.

Lower Taxa

None.

"-5timesfilamentlength" is not declared as a valid unit of measurement for this property."-3timeslengthofstyles" is not declared as a valid unit of measurement for this property.

... more about "Luzula echinata"
persistent +
not callous +
Janice Coffey Swab +
(Small) Hermann +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.7 cm7 mm <br />0.007 m <br /> (?) +
swollen +
channeled;flat +
pale +  and dark-brown +
obovoid;subglobose +
conspicuous;barely visible +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
globose +  and conic +
15 cm150 mm <br />0.15 m <br /> (45 cm450 mm <br />0.45 m <br />) +
Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, S.C. +, Tenn. +, Tex. +, Va. +  and W.Va. +
50–800 m +
in dense clusters +  and inserted +
headlike +
Bluffs, wooded slopes, alluvial woods, streamsides, under hardwoods and occasionally in clearings +
multicellular +
3 +  and 1 +
pilose +  and sparsely hairy +
0 cm0 mm <br />0 m <br /> (9 cm90 mm <br />0.09 m <br />) +
green;brown or purplish black +
persistent +
Flowering and fruiting spring–early summer. +
parietal +  and axile +
0 cm0 mm <br />0 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
dark-brown +
globose +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
green;brown or purplish black +
persistent +
Illustrated +  and Endemic +
generally longer +
Luzula sect. Gymnodes +  and Luzula subg. Gymnodes +
Luzula echinata +
Luzula subg. Luzula +
species +
greenish +  and pale or dark-brown +
0.28 cm2.8 mm <br />0.0028 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
indistinct +
herb +  and cespitose +