Luzula bulbosa

(A. Wood) B. B. Rydberg

Brittonia 1: 85. 1931Smyth, B. B. & L. C. R. Smyth, Trans. Kansas A.

IllustratedEndemic
Basionym: Luzula campestris var. bulbosa A. Wood Class-book Bot. ed. S. N. s.n.(k), 723. 1868
Treatment appears in FNA Volume 22.

Rhizomes short, slender, bearing few to several white, swollen (storage) leaf-bases. Culms weakly cespitose or solitary, 8–40 cm. Leaves: basal leaves few; cauline leaves 2–3, to 17 cm × 7 mm, margins scarcely to densely ciliate. Inflorescences: glomerules 3–20 (each with 6–20 flowers), central glomerules sessile or nearly sessile, cylindric, 5–12 × 5–7 mm; peduncles straight, erect, 0.5–7 cm; proximal inflorescence bract leaflike (margins pilose), shorter than inflorescence, margins pilose; bracts purplish with long clear apex, sheathing, margins sparsely to densely ciliate; bracteoles white-clear, shining, margins fimbriate. Flowers: tepals with shining chestnut centers and usually wide clear margins and apex, 2–3 mm; outer whorl usually exceeding inner whorl, at least by awned tip; anthers 1–2 times filament length; stigmas 3–4 times length of styles. Capsules brown, shining, obovoid (apex truncate), equal or longer than tepals, apex truncate. Seeds dark-brown, ellipsoid, 0.9–1.3 mm; caruncle 0.5–0.7 mm. 2n = 12.


Phenology: Flowering and fruiting spring–early summer.
Habitat: Dry situations in woods and fields 50–600 m

Distribution

V22 300-distribution-map.jpg

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

Discussion

Luzula bulbosa has slender rhizomes that bear few to several white, swollen (storage) leaf bases; cauline leaves (numbering 2–3) have scarcely to densely ciliate margins; flowers have stigmas 3–4 times the length of the styles.

Selected References

None.

Lower Taxa

None.

"-2timesfilamentlength" is not declared as a valid unit of measurement for this property."-4timeslengthofstyles" is not declared as a valid unit of measurement for this property.

... more about "Luzula bulbosa"
persistent +
Janice Coffey Swab +
(A. Wood) B. B. Rydberg +
Luzula campestris var. bulbosa +
channeled;flat +
conspicuous;barely visible +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
0 cm0 mm <br />0 m <br /> (17 cm170 mm <br />0.17 m <br />) +
7 cm70 mm <br />0.07 m <br /> (?) +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
solitary +  and cespitose +
8 cm80 mm <br />0.08 m <br /> (40 cm400 mm <br />0.4 m <br />) +
Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Md. +, Mass. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, S.C. +, Tex. +, Tenn. +, Va. +  and W.Va. +
in dense clusters +  and inserted +
headlike +
Dry situations in woods and fields 50–600 m +
multicellular +
3 +  and 1 +
fimbriate +
0.5 cm5 mm <br />0.005 m <br /> (7 cm70 mm <br />0.07 m <br />) +
green;brown or purplish black +
persistent +
Flowering and fruiting spring–early summer. +
parietal +  and axile +
dark-brown +
ellipsoid +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
green;brown or purplish black +
persistent +
Illustrated +  and Endemic +
generally longer +
Luzula sect. Gymnodes +  and Luzula subg. Gymnodes +
Luzula bulbosa +
Luzula subg. Luzula +
species +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
indistinct +
herb +  and cespitose +