RUSH FAMILY 49 



or upper surface and commonly hanging roots from be- 

 neath. The genus Lemna is doubtless represented in our 

 district, but what species occur is not known. 



JUNCACEAE. Rush Family. 

 This family is represented by the true rushes {Juncus), 

 which have 3-celled, many-seeded capsules, and by the wood 

 rushes (Luzula), which have 1-celled, 3-seeded capsules. 

 They are grass-like plants with inconspicuous flowers and 

 are not further described here. 



LILIACEAE. Lily Family. 

 Perennial herbs with perfect regular flowers. Stems from 

 bulbs, corms, or rootstocks. Perianth of 6 segments, the 

 outer 3 often called sepals, the 3 inner called petals. Stamens 

 6, opposite the perianth-segments, 3 sometimes without an- 

 thers. Ovary superior, developing into a few to many-seeded 

 3-celled capsule or berry; styles or stigmas 3. 



A. Stems nearly naked, tne leaves being entirely or chiefly "basal. 



Styles 3, distinct down to the ovary. 



Stem glandular-pubescent, from a rootstock 2. Tofieldia. 



Stem glabrous, from an ovate bulb 3. Zygadenus. 



Style 1, sometimes 3-lobed, but not down to the ovary. 

 Flowers few to many, in umbels, i. e., all on pedicels 

 arising from the summit of the stem. 

 Perianth-segments distinct to base; herbage onion- 

 scented 6. Allium. 



Perianth-segments united below into a tube 7. Brodiaea. 



Flower solitary, white; leaves broad 13. Clintonia. 



Flowers in racemes or panicles. 



Basal leaves 4 to numerous, conspicuous. ; 



Flowers blue; leaves erect 12. Camassia. 



Flowers yellow; leaves erect 1. Narthecium. 



Flowers whitish, narrow; leaves spreading 5. Chlorogalum. 



Basal leaves 1 or 2. 



Perianth-segments similar, not hairy 10. Erythronium. 



Inner segments much broader than the outer, each 



with a hairy gland 11. Calochortus. 



B. Stems leafy. 



Fruit a berry. 



Flowers white, J4 in. long, in dense clusters 14. Smilacina. 



Flowers greenish, J4 in. long, nodding 15. Disporum. 



Fruit a dry capsule. 



Leaves 2 in. or less wide. 



Flowers yellow or white, 1 in. or more long 8. Lilium. 



Flowers purplish, mottled, V% to H in. long 9. Fritillaria. 



Leaves 2 to 6 in. wide. 



Flowers greenish, }4 in. long 4. Veratrum. 



Flowers purplish, 2 in. long 16. Trillium. 



