JUNCACE.E. (RUSH FAMILY.) 357 



dark-brown. Rather rare in California, Colorado, etc., but common in the 

 Atlantic States. 



4. L. spicata, Desv. Leaves carinate and folded : flowers in a solitary 

 and compound dense nodding spike : seed not appendaged. An alpine species 

 in the mountains of Colorado, and in similar situations northward and east- 

 ward. 



2. JUNG US, L. RUSH. BOG-RUSH. 



Stamens when 3 opposite the 3 outer sepals. Generally in wet soil or 

 water, with pithy or hollow simple stems, and panicled or clustered small 

 greenish or brownish flowers. 



* Scape naked, the basal sheath also leafless, or rarely bearing terete leaves simi- 



lar to the scape : flowers in sessile apparently lateral panicles : stamens 6 in 

 ours. TRUE JUNCI. 



t- Flowers many ; panicle more or less compound : sheaths leafless. 



1. J. Balticus, Deth. Rather stout: sepals nearly equal and similar, or 

 the inner more obtuse : capsule ovate-pyramidal, angled, beaked : seeds smaller, 

 narrower, and longer apiculate than in the eastern form. Ranging across 

 the continent. Known as " Wire grass." 



2. J. filiformis, L. Very slender : panicle almost simple : sepals exceed- 

 ing the broadly ovate obtuse short-pointed greenish capsule, From Colorado to 

 the Saskatchewan and eastward across the continent. 



t- - Flowers few ; panicle scarcely ever compound: sheaths often leaf-bearing: 

 seeds caudate : low and alpine. 



3. J. Drummondii, E. Meyer. Stems 1 to U feet high, terete and fili- 

 form : sheaths bristle-pointed: spathe more or less exceeding the simple 1 to 

 3-flowered panicle : capsule ovate-oblong, triangular, refuse : seeds ovate. 

 Mountains of Colorado to California and northward. 



4. J. Hallii, Engelm. Stems 6 to 12 inches high, terete and filiform, 

 much longer than the terete bristleform leaves : spathe scarcely exceeding the 

 close subsimple 2 to 5-flowered panicle : sepals white-margined : capsule ovate, 

 angled, retuse : seeds oblong-linear. Trans. St. Louis Acad. ii. 446. Colorado. 



5. J. Parryi, Engelm. Stems 4 to 8 inches high, setaceous, longer than 

 the sulcate subterete leaves : spathe exceeding the 1 to 3-flowered panicle : 

 outer sepals bristle-pointed : capsule prismatic, pointed : seeds oblong. Loc. cit. 

 Mountains of Colorado to California and northward. 



* * Stems naked or leafy : leaves flat, or semi-terete and channelled, never 



knotted: panicle or head evidently terminal: stamens 6 in ours. GRASSY- 

 LEAVED JUNCI. 



*- Alpine: seeds caudate: leai^es flstulous : flowers in small heads. 



6. J. triglumis, L. Leaves roundish, channelled and 2 to 3-tubular 

 below, flattened upward : sheaths auricled at top : head equalling the membra- 

 nous spathe : capsule elliptical, acute. Mountains of Colorado and northward 

 to the Arctic coast. 



7. J. castaneus, Sm. Stem leafy : leaves terete, deeply channelled at 

 base : heads somewhat in pairs sessile or peduncled, shorter than the rather large 

 spathe : capsule oval-triangular and rather long mucronate. Mountains of Colo- 

 rado northward to British America and thence across the continent. 



