JUNCACEAE (RUSH FAMILY) 



275 



587. J. subtilis. 

 Plant x %. Flower x 3. 



Ont. Aug., Sept. The proliferous plants are usually sterile and much larger, 

 with larger diffuse panicles. FIG. 586. 



26. J. subtilis Mey. Creeping or floating, capillary, reddish, in water 



becoming 4 or 5 dm. long, with elongate capil- 

 lary leaves, on shore forming rosettes (0.5-2 dm. 

 broad) with a tuft of primary leaves (2 or 3 cm. 

 long) and repent branches bearing small fasci- 

 cles of small leaves and axillary or terminal 

 flowers either sessile or short- 

 peduncled ; flowers and capsule 

 much as in preceding, but fila- 

 ments longer. (J. pelocarpus, 

 var. Engelm.) Margins and 

 shores of ponds and streams, 

 Nfd., Que., and Me. Aug., Sept. FIG. 587. 



27. J. bulbosus L. Similar, but with hardened bulbous 

 bases, coarser habit, several-flowered glomerules, sharper sepals 

 and petals, and blunt capsule. Margins and shores of ponds, 

 streams or pools (generally floating). Lab., Nfd., and N. S. 

 (Eu., n. Afr., Pacific I.) FIG. 588. 



28. J. militaris Bigel. Stem stout (3.5-9 dm. high), from 

 a thick creeping rootstock, bearing a solitary stout erect leaf 

 (3-7 dm. long) below the middle, which overtops the crowded 



and rather contracted cyme ; heads numerous, 5-12 (rarely 25)- T BU _ 8 / 



flowered; flowers brownish (3 mm. long); sepals and petals l x /3 ' 



lanceolate, the sepals awl-pointed, as long as the nar- 

 rowly-ovoid triangular taper-beaked 1-celled capsule; 

 anthers longer than the filaments; ovary attenuate 

 into a slender style ; 

 seeds (0.6 mm. long) 

 globose-obovoid, ob- 

 tuse, abruptly pointed. 

 Margins of ponds 

 and streams, N. S. to 

 n. N. Y. and Ala. 

 Sometimes producing, 

 in deep water, num- 

 berless long capillary 

 submersed leaves from 

 the rootstock. FIG. 

 589. 



29. J. polyc6phalus 



Michx. Stout (0.5-1.2 m. high), from a stout 

 horizontal rootstock ; leaves laterally flattened 

 (3-9 mm. wide) ; cyme large (1-3 dm. long), 

 spreading, bearing many distant heads (nearly 

 1 cm. in diameter); flowers 3.5 mm. long; the subulate sepals longer than the 

 similar petals ; anthers about as long as the filaments. (J. 

 scirpoides, var. Engelm) . Swamps, s. Va. to Fla. and Tex. 

 FIG. 590. 



30. J. nodbsus L. Stem erect (1.6-6 dm. high), slender, 

 from a creeping thread-like and tuber-bearing rootstock, 

 mostly with 2 or 3 slender leaves ; heads few or several, rarely 

 single, 8-20-flowered (7-11 mm. in diameter), overtopped by 

 the involucral leaf; sepals nearly as long as the slender 

 triangular taper-pcinted 1-celled capsule ; anthers oblong, 

 shorter than the filaments; style very short; seeds (0.5 mm. 

 long) obovoid, abruptly mucronate. Swamps and gravelly 

 banks, e. Que. to Sask., s. to Va., 111., and Neb. July, Aug. 591. J. nodosus. 

 FIG. 691. Inflorescence x %. 



J. militaris. 

 Part of inflorescence x %. 

 Seed x 18. 



590. J. polycephalus. 

 Part of inflorescence x %. 

 Seed x 30. 



