40 Flora of the Palouse Region 



J. latifolius Buch. Perennial, with creeping rootstocks: stems leafy, 

 30-70 cm. tall: leaves flat, 2-3 mm. broad, pale green, shorter than the 

 sheaths, without ligules: flowers aggregated into few-flowered heads, these 

 panicled: perianth segments straw-colored, lanceolate, acuminate, scarious- 

 margined, rough, 5 mm. long: stamens 6: capsule 3-angled, oblong, acute, 

 short-beaked. Common along streams. 



J. ensifolius Wiks. Perennial, with thick rootstocks: stems compressed, 

 two-edged, 15-40 cm. tall, leafy: leaves equitant, with internal transverse 

 partitions: heads several or numerous in a panicle, globose, usually dark 

 brown :perianth segments lanceolate, acuminate, 3 mm. long: stamens three: 

 capsule 3-angled, acute, barely exceeding the perianth. Common in wet 

 places. 



J. nevadensis Watson. Stems terete, leafy, 30-60 cm. tall, from running 

 rootstocks: leaves somewhat flattened, with few partitions, 2-3 mm. wide, 

 15-30 cm. long; ligules present: panicle loose, composed of numerous small 

 dark brown heads, these few-flowered: perianth segments lanceolate, acum- 

 inate, 4 mm. long, smooth: stamens 6. Our form, common along streams, is 

 not typical. It very rarely produces good seeds. 



J. Stems terete, leafy, 30-45 cm. tall, slender: 



leaves narrowly linear, becoming somewhat involute, with few cross par- 

 titions, 10-15 cm - long: heads cinnamon color, aggregated into a dense 

 panicle: perianth segments lanceolate, acuminate, equalling the three-angled 

 acute capsule: stamens 6. In springy places, rare. 



60. LUZULA. 



Perennial, with glabrous or sparingly pubescent herbage: stems 

 leaf-bearing: leaf-sheaths with united margins: blades grass-like: 

 inflorescence umbellate, paniculate or corymbose, often congested: 

 flowers always bracteolate; bractlets usually lacerate or denticu- 

 late: stamens 6 Tin ours): ovary 1 -celled; ovules 3, basal: seeds 3. 



L. campestris DC. Stems tufted, 15-40 cm. tall, the whole plant loosely 

 villous: leaves flat, 2-5 mm. broad, 5-15 cm. long: flowers in short spikes, 

 these in cymes: longest bract usually exceeding the inflorescence: spikes 

 oblong, .5-1.5 cm. long, on peduncles 1-5 cm. long, erect or nodding: per- 

 ianth segments straw-color or brownish, lanceolate, acuminate, 3 mm. long: 

 capsules obtuse, short-beaked, equalling the perianth. Dry woods, common. 



Family 15. UUACEAE. 



Terrestrial plants, mostly herbs: stems usually from bulbs, 

 corms or more or less thickened rootstocks: leaves usually parallel- 

 veined, sometimes net-veined: flowers mostly perfect; perianth 

 regular, of 3 sepals and 3 petals, these all separate or more or less 

 united into a tube (sepals sometimes dissimilar to the petals): 

 stamens 6, opposite the segments of the perianth: ovary superior, 

 3-celled: fruit a few to many-seeded 3-celled capsule or berry. 



