AND SOME OF ITS AlLIES 513 



Auricles scarious, whitish, conspicuously produced beyond the point 



of insertion. 



Capsule oblong, often narrow, 3-celled, equaling the perianth 



or nearly so, segments of the latter erect or appressed, 



cyme not crowded. 

 Stem stout ; leaves short and broad (1. 5-2 mm.); perianth 



4 mm. long, scarious at the base, very acute, stramineous ; 



cyme somewhat open. 8. J, brachyphy litis. 



Stem slender; leaves narrow and longer; perianth 3.5-4 



mm. long, scarious to the apex, acute, not pungent, 



fuscous ; flowers few, densely congested. 



9. J. confusus. 

 Capsule ovate or oval, 1 -celled, three-fourths the length of the 



perianth or less, segments of the latter more or less 



spreading. 

 Flowers fuscous, congested ; perianth parts nearly erect, 



4-5 mm. long ; capsule oval, firm ; plant very stout, 



with conspicuous broad sheaths. 



10. y. occidentalis. 



Flowers greenish, distant (rarely congested); perianth con- 

 spicuously spreading, 3-4.5 mm. long; capsule ovate- 

 oval, thin-walled ; plant more slender. 



II. J. tenuis. 

 Auricles cartilaginous, yellowish-brown ; inflorescence greenish, 

 small, usually congested ; perianth spreading ; capsule ovate, 

 thin- walled. 12. J. Dudleyi. 



Leaves terete, barely grooved on the upper side ; inflorescence brownish, 

 usually open ; auricles nearly cartilaginous; capsule ovate, I -celled ; 

 perianth spreading. 13. J. dichotomus. 



I. Juncus Gerardi Loisel. Journ. d. Bot. 2 : 284. 1809 



y. bulbosus Bigelow, Torrey and Pursh. Not L. 



Stems loosely tufted, rather stout and strict below, 3-6 dm. 

 high, slightly compressed, slender at the summit : leaves erect or 

 spreading, flat or slightly involute, grass-like, nearly equaling the 

 culm ; sheaths 4-6, all blade-bearing, the lower loose, the upper 

 close and reaching the middle of the stem or even higher, margins 

 and small auricles membranous : inflorescence small, 2~J (rarely 1 2) 

 cm. long, many-flowered, open but not diffuse, ultimate branches 

 short, bearing 1-2 flowers at the extremity ; bracts usually equaling 

 the inflorescence ; bracteoles ovate-subrotund, small, rounded : 

 perianth small, 2.5-3 mm - lon £> the P arts dark-fuscous with green 

 midrib, nearly equal in length ; the outer linear, convex, apex 

 obtuse and incurved, margins narrowly scarious ; the inner oval 

 obtuse with broadly scarious margins : stamens nearly as long as 

 the perianth, anthers linear, much exceeding the filaments ; style 



