juncacb^:. (rush family.) 357 



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



Atlantic States. 



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

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

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

 ward. 



2. J IT NO 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. 



+- 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. flliformis, 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. 



h- +- Flowers Jew; panicle scarcely ever compound: sheaths often leaf bearing: 

 seeds caudate : low and alpine. 



3. J. Drummondii, E. Meyer. Stems 1 to 14 feet high, terete and fili- 

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

 3-flowered panicle : capside 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. — Gkassy- 

 leaved Junci. 



+- Alpine: seeds caudate: leaves fistulous : 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 : capside 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 



