278 



JUNCACEAE (RUSH FAMILY) 



600. J. repens. 

 Inflorescence x 2 



about the length of the sheathing scarious awl-pointed bract; flowers pale and 

 reddish (3-4 mm. long) ; sepals lanceolate, acute; petals obtusish, f the length 

 of the trigonous-ovoid acute or acuminate pale capsule (5-6 mm. long), as long 

 as the slender stamens ; filaments many times longer than the oblong anthers ; 

 recurved stigmas shorter than the style ; seeds oblong, with a very loose coat 

 prolonged at both ends (2-2.5 mm. long). — Eurasia. 



Var. americanus Buchenau. Often taller (1-4.5 dm. high) ; heads 1 or 2; 

 flowers larger (4.5-5.5 mm. long); the distinctly mucronate-tipped capsule 

 longer (6-9 mm. long) ; seeds 3-4 mm. long. — Peat-bogs, Lab. 

 and Nfd. to Ont., s. to N. S., Me., N. Y., Mich., and Minn., very 

 local. July, Aug. (E. Prussia.) 



42. J. repens Michx. Stems ascending (0.5-2 dm. high) 

 from a fibrous annual root, at length creeping or floating; 

 leaves short, linear, those of the stem nearly opposite and 

 fascicled; heads few in a loose leafy cyme, 3-12-flowered ; 

 flowers green (0.5-1 cm. long) ; sepals and petals rigid, lance- 

 subulate, sepals as long as the linear triangular obtuse capsule, 

 the petals much longer; stamens as long as the sepals; fila- 

 ments much longer than the oblong anthers; seeds obovoid, 

 slightly pointed, very delicately ribbed and cross-lined. —Miry 

 banks and ditches, Del. to Fla. and La. June-Oct. Fig. 600. 

 43. T. marginatus Rostk. Stem erect, from a bulbous and stoloniferous 

 base (2-7 dm. high) ; leaves linear ; heads 3-12-flowered, in simple or compound 

 cymes ; flowers purplish and green (3.5 mm. long) ; sepals and 

 petals oblong, the sepals acute and slightly awned, petals longer, 

 mostly obtuse, as long as the subglobose scarcely mucronate cap- 

 sule ; stamens shorter than the sepals, early shriveling ; anthers 

 shorter than the filaments; style very short; seeds (about 0.5 

 mm. long) slender, pointed at both ends and strongly ribbed. — 

 Moist sandy places, Me. to Ont., Neb., and 

 southw. July-Sept. Fig. 601. 



Var. setbsus Coville. Similar to the species, 

 but with lance-attenuate aristate petals. — 

 Kan, to Lla. and Tex. 



44. J. aristulatus Michx. Coarser (0.4-1 m. 

 high) ; the larger inflorescence (0. 5-2 dm. high) 

 with abundant 2-5-flowered brown heads ; stamens equaling or 

 exceeding the sepals, persistent and usually exserted in fruit. {J. marginatus, var. 

 Uflorus Engelm.) — Wet sandy barrens, Mass. to Mich., and southw., mostly near 

 the coast. Fig. 602. 



2. LUZULA DC. Wood Rush 



Capsule 1-celled, 3-seeded, 1 seed to each parietal placenta. — Perennials, 

 often hairy, usually in dry ground, with flat and soft usually hairy leaves, and 

 spiked, crowded, or umbeled flowers. (From Gramen Luzulae, or Luxulae, 

 diminutive of lux, light, — a name given to one of the species from its shining 

 with dew.) Jdncoides [Dill.] Adans. Juncodes Ktze. 



a. Flowers solitary at the tips of the ultimate branches of the inflorescence. 



Inflorescence an umbel, the filiform peduncles l(rarely 2)-flowered; flow- 

 ers 3-4.5 mm. long 1- -Z'- saliuemts. 



Inflorescence a loose decompound cyme ; flowers 2 mm. long . . . 2. Z parviflora. 

 t. Flowers crowded in spikes or glomeriiles 6. 



6. Flowers white 3- ^- nemorosa. 



b. Flowers brown or straw-colored (rarely green in shade) c. t • * 



c. Flowers in dense nodding spilce-like panicle 5. Z. spicata. 



c. Flowers in mostly peduncled glomerules d. 

 d. Leaves flat, with blunt callous tips ; bracts at base of the flowers entire 

 or merely lacerate. 



Flowers castaneous (6) Z. campesiris, x.frtgtda^ 



Flowers ferruginous, pale brown or yellowish. 



Eays all strongly ascending Q. L. eampestris, v. rmilti/lora. 



Rays (or some of them") strongly divergent . . (o) L. campeatrt-s, v. bulbom, 

 d. Leaves with involute subulate tips'; bracts at base of flowers ciliate- 



fimbriate 4. Zr. confusa. 



602. J. aristulatus. 

 Fruiting flower X 3. 



601. J. marginatus 

 Inflorescence x %. 

 Fruiting flower x b. 



