142 Karl M. Wiegand and Arthur J. Eames 



Newf . to Sask., southw. to N. Y., Mich., and Minn., and in the mts. to Ga. ; rare 

 or absent on the Coastal Plain. Found also in e. Asia. 



2. L. campestris (L.) DC, var. multiflora (Ehrh.) Celak. Wood Rush. 



Dry open woodlands, banks, and fields, in stony or gravelly, mostly chestnut, non- 

 calcareous soils; frequent. May-June 15. 



Hills s. of Ithaca, and on ravine crests, rarely in other situations : North Pinnacle, 

 Caroline ; lower Enfield Glen ; South Hill, near the marsh ; Six Mile Creek ; n. of 

 Beebe Lake; Cascadilla Creek; Esty Glen; n. of Forest Home; e. of Ludlowville; 

 Utt Point; and elsewhere. 



Newf. to Alaska, southw. to N. J., Pa., 111., Utah, and Calif., including the Atlantic 

 Coastal Plain. Found also in Eurasia. 



25. LILIACEAE (Lily Family) 



Artificial Key to the Genera 8 



a. Leaves all nearly or quite basal, or occasionally apparently wanting ; plant scapose. 

 /;. Perianth conspicuously gamophyllous, very large, 8—1 1 cm. long, orange. 



5. Hemerocallis 

 b. Perianth of separate parts, smaller, not orange. 

 c. Flowers solitary, yellow, 2-3 cm. long; leaves mottled. 7. Erythronium 

 c. Flowers several, rarely solitary, smaller. 



d. Flowers white, pink, purplish, or greenish white ; leaves at flowering time 

 linear or wanting. 

 c. Flowers strictly umbellate, often replaced by bulblets ; odor of tissue 



strongly onion-like. 4. Allium 



e. Flowers subcorymbose ; odor of tissue not onion-like. 



8. Ornithogalum 

 d. Flowers greenish yellow ;- leaves oval or elliptical. 10. Clintonia 



a. Leaves cauline. 



b. Flowers large, 4-10 cm. in diam., orange, usually spotted ; the perianth segments 



all similarly colored. 6. Lilium 



b. Flowers smaller, or if large the calyx green. 

 c. Leaves whorled. 



d. Blade parallel-veined ; perianth segments all similar in color. 



16. Medeola 

 d. Blade netted-veined ; calyx green ; corolla white or colored. 



17. Trillium 

 c. Leaves alternate. 



d. Venation netted, but with a few strong parallel ribs ; leaves cordate, petioled ; 



flowers umbellate; plant tall, arching or climbing. 18. Smilax 

 d. Venation parallel ; leaves, if cordate, on plants less than 2 dm. high ; plants 

 not climbing ; inflorescence various. 

 c. Flowers axillary, small, 4-19 mm. long. 

 /. Perianth gamophyllous; flowers greenish. 15. Polygonatum 



/. Perianth of separate parts. 

 g. Leaves (modified branches) thread-like; flowers greenish white. 



9. Asparagus 

 g. Leaves broad ; flowers pink. 14. Streptopus 



c. Flowers terminal, solitary, large, 15-43 mm. long, yellow or straw color ; 

 perianth segments separate (see also 3d e). 3. Uvularia 



c. Flowers in a terminal spike, raceme, panicle, or umbel, or, if solitary and 

 terminal, then greenish, and the leaves strongly acuminate and the peri- 

 anth segments separate. 



8 Fruit and undergound parts, structures which frequently are not at hand, are important in a 

 natural classification of genera in this family. 



