286 JUNCACEAE 
long, attenuate: petals about 14 shorter than the sepals: capsule 
i slighty shorter than the petals.—Low grounds or sandy places, various 
provinces, Ga. to Ark., Ont., and Md 
trigonocarpus Steud. Stem 6-12 dm. tall, terete, or nearly so: 
blade nearly as thick as the stem: heads usually numerous and 2—4-flo ert 
sns lanceolate, 3-3.5 mm. long, acute: petals somewhat rue than the 
sepals: eapsule narrowly pyramidal, nearly twice as long as the sepals.—Sandy 
igi od in pinelands, Coastal Plain and Piedmo nt, Fla. to La. and S. C. 
26. canadensis J. Gay. Stem 3-12 dm. tall: heads many-flowered, rather 
crowded sepals lanceolate, 3-3.5 mm. long: n longer than the sepals, 
tenuate, nearly as long as the stout capsule: capsule dd conie: seeds 
PA aied at each end.—Low grounds, various provinces, Ga. to La., Minn., 
and Newf. 
27. J. diffusissimus Buckl. Stem 3-6 dm. tall: inflorescence with elongate 
widely spre see bane bu heads 3—12-flowered, scattered: e narrowly 
eiae cae 5-3.5 mm. long: petals nearly like the cu u 
long as the Sende capsule: “seeds abru uptly apiculate.—Low grounds, various 
provinces, Ga. Tex., Kans., and Ind. 
28. J. oils (Engelm.) Coville. s 6—10 dm. tall: inflorescence with 
300-500 heads: sepals subulate-lanceolate, 2-3 mm. long: petals nearly equal to 
the sepals: capsule generally slightly p d the 'sepals.—L ow grounds, 
Coastal Plain and Interior Provinces, La. to Tex., Kans., Ill., and Tenn. 
29. J. Elliottii Chapm. Stem 2-8 dm : inflorescence sees 5-50 pm 
(100—200 heads in J. "Blliottá polyonthemas) sepals lanceolate, 2-2.5 1. 
long: iue slightly shorter than e sepals: ae exceeding p it ea 
(Boc-RUSH.)—Bogs and ditches, a Plain, Fla. to Tex. and N. C. 
30. acuminatus Michx. Stem dm. tall: heads generally 5—12-flowered: 
sepals lanceolate-subulate, 2.5-3.5 mm. long: petals slightly shorter than the 
sepals: eapsule pe. equalling the s ono ovoid: seeds acute at both ends.— 
(KNOT-LEAVED RUSH.)—Moist soil, ditches, meadows, and stream-banks, various 
provinces, Ga. E Tex, Minn, n Me.; also in W N. A.— (Mer z.) 
1. J. debilis A. Gray. Stem 2-4 dm. tall: heads generally 2—0-flowered: 
sepals he lanceolate, 2-2.5 mm. long: petals nearly equalling the E 
e dem exceeding the sepa als and petals. [J. acuminatus debilis 
gelm.]—Moi ie and wet sandy places, in acid soil, various provinces, Fla. 
* Miss, Ark., Mo. R. I. 
2. JUNCOIDES Adans. Pubeseent herbs. Leaf-blades flat and relatively 
thin, or sometimes involute. Bracts subtending the flowers usually lacerate or 
dentieulate. Perianth greenish.—About 65 species, widely distributed.—Spr. 
S 
Peduncles Eu c by 1 or 2 flowers or by a cyme: capsule of 
an ovoid 
Filaments deltoid, one-third or one-fourth as long as the an- 
hers : peduncles with 1 or 2 flowers 1. J. saltuense. 
Filaments uon about as long as the anthers: peduncles 
cymose at the 2. J. carolinae. 
Penne icon deed "bo compact spikes: capsule of an obovoid 
SUIS and petals 3-4 mm. long: eapsule mueh surpassed by 
the perianth. 9. J. echinatum. 
Sepals and petals 2-2.5 mm. long: capsule surpassing the peri- 
anth or about equalling it in length. 4. J. bulbosum. 
1. J. saltuense s nald) Small. Plants 1-4 dm stem-leaves 1.5-4.5 
em. long: peduncles 1—2-flowered: sepals and petals "broadly lanceolate, E 
