308 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



3. Juncoides parviflorum (Ehrli.) Coville. Common at middle altitudes in moist 

 woods or thickets; sometimes on rock slides above timber line. Alaska to Calif., 

 N. Mex., N. Y., and Greenl. {Luzula parviflora Desv. ) — Stems solitary or tufted, 

 30 to 70 cm. high, with 2 to 5 leaves; leaves 3 to 10 mm. wide, bright green; flowers 

 solitary in the panicles or 2 or 3 together; sepals 1.5 to 2 mm. long; capsule slightly 

 longer than the sepals; seeds brown. 



4. Juncoides piperi Coville. Frequent above timber line, on rocky slopes or rock 

 slides; also at east entrance, in ^villow thicket. Wash, and Oreg. to Mont. — Stem* 

 20 to 40 cm. high, densely tufted; leaves 2 to 6 mm. wide, the basal ones short, 

 about one-fourth as long as the stem; capsule equaling or slightly longer than the 

 sepals; seeds yellow. 



6. Juncoides glabratum (Hoppe) Sheldon. Common and often abundant above 

 or near timber line, in meadows or on rock slides. Alaska to Wash, and Mont.; 

 also in Eur. {Luzula glahrata Desv.) — Stems 20 to 50 cm. high, tufted; leaves 4 to 

 10 mm. wide, 3 to 10 cm. long; capsule about as long as the sepals. 



In some places this species is very abundant and forms extensive pure stands. 



18. IILIACEAE. Lily Family. 



Perennial plants, sometimes with bulbs; leaves parallel-veined; flowers large or 

 small,' wdth 3 sepals and 3 petals; stamens 6; fruit dry or juicy. — The cultivated 

 lilies, hyacinths, and daffodils and many other showy plants belong to this family. 

 Leaves linear or nearly so, \vith parallel sides, many times longer than wide (hollow 

 in one species of Allium); fruit dry. 

 Flowers 1 to 3; petals bearded inside, yellowish white . . 13. CALOCHORTUS- 

 Flowers more than 3, often very numerous; petals not bearded. 



Flowers in umbels; plants with an onion odor 6. ALLIUM. 



Flowers in dense or slender racemes; plants never with an onion odor. 



Petals purplish blue, about 2 cm. long 8. QUAMASIA. 



Petals never blue, much less than 2 cm. long. 

 Leaves very numerous, tough, rough-edged; stems usually about a meter 



high 1. XEROPHYLLITM. 



Leaves few, succulent and easily broken, smooth-edged; stems usually less 

 than 50 cm. high. 

 Flowers drooping, bronze and greenish yellow ... 2. STENANTHIITM. 

 Flowers not drooping, wliite, yellowish white, or greenish white. 



Leaves with their edges turned toward the stem; plants with rootstocks. 



3. TOFIELDIA. 

 Leaves with their sides facing the stem; plants with bulbs. 



4. ZYGADENUS. 

 Leaves not linear, lanceolate or broader, not more than 5 times as long as -nide, the 

 sides curved, not parallel; fruit often juicy. 

 Stems not leafy. 



Flowers yellow; fruit a dry 3-angled capsule 7. ERYTHRONIUM. 



Flowers white; fruit juicy, dark blue 9. CLINTONIA 



Stems leafy. 



Flower one on each stem. 



Flowers erect, pink or white; leaves ovate 14. TRILLIUM 



Flowers recurved, yellow; leaves oblong 16. FRITILLARIA, 



Flowers several or numerous on each stem. 

 Flowers green; fruit dry; plants usually a meter high or more, the stems not 

 branched 6. VERATRUM- 



