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FNA | Family List | FNA Vol. 22 | Juncaceae | Luzula

18. Luzula bulbosa (A. Wood) B. B. Rydberg, Brittonia. 1: 85. 1931Smyth, B. B. & L. C. R. Smyth, Trans. Kansas A.

Luzula campestris (Linnaeus) de Candolle var. bulbosa A. Wood, Class-book Bot. ed. S. N. s.n.(k), 723. 1868

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 x 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 x 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.

Flowering and fruiting spring--early summer. Dry situations in woods and fields 50--600 m; Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Kan., Ky., La., Md., Mass., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.C., Tex., Tenn., Va., W.Va.

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.


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