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bulbous wood rush

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.

Luzula bulbosa

Phenology Flowering and fruiting spring–early summer.
Habitat Dry situations in woods and fields 50–600 m
Distribution
from FNA
AL; AR; CT; DC; DE; FL; GA; IL; IN; KS; KY; LA; MA; MD; MO; MS; NC; NJ; NY; OH; OK; PA; SC; TN; TX; VA; WV
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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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 22.
Parent taxa Juncaceae > Luzula > subg. Luzula
Sibling taxa
L. acuminata, L. arctica, L. arcuata, L. campestris, L. comosa, L. confusa, L. divaricata, L. echinata, L. groenlandica, L. hitchcockii, L. kjellmaniana, L. luzuloides, L. multiflora, L. orestera, L. pallidula, L. parviflora, L. piperi, L. rufescens, L. spicata, L. subcapitata, L. subcongesta, L. wahlenbergii
Synonyms L. campestris var. bulbosa
Name authority (A. Wood) B. B. Rydberg: Brittonia 1: 85. 1931Smyth, B. B. & L. C. R. Smyth, Trans. Kansas A
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