282 American Midland Naturalist Monograph No. 7 



1. Flowers 6-8 cm lon<^, leinon-yellovv. fraa;rant: mara;ins of perianth- 

 segments flat: leaves 5-10 mm wide: capsules 2-3 cm long: 

 cult, and occasionally escaped : native of temperate eastern Asia. 

 May-July. Yellow Day Lily H. flara L. 



10. Hosta Tratt. — Plantain Lily 



H. lancifolia (Thunb.) Engler. Waste ground, Mississippi Palisades 

 State Park, Carroll Co., R. H. Mohlenbrock in 1956; escaped from 

 cult.; native of Asia. [H . japonica (Thunb.) Voss, not Tratt.] 



1 1 . Lilium L. — Lily 

 L Leaf-axils not bulblet-bearing. 



2. Flowers erect; perianth-segments with oval or lanceolate blades 

 and a slender claw; leaves mostly alternate, linear, 2-7 inm 

 wide; dry open woods in the northern half of 111. Jime-July. 

 [L. philadelphicurn var. andiniun (Nutt.) Ker] Wood Lily 

 - L. unibi'Uatiw} Pursh 



2. Flowers nodding; perianth-segments oblanceolate, not clawed, 

 recurved; leaves mostly whorled, elliptic-lanceolate, 1-3 cm 

 wide; inoist woods, thickets, meadows. June-Aug. [L. caua- 

 dense and L. supcrbum of auth.^ not L.] Turk's-cap Lily 

 L. inichiganense Farw. 



1. Leaves scattered, the upper axils usually bulblet-bearing; stem 

 pubescent above; perianth-segments recurxed from the base; 

 rarely escaped from cult., but not established; native of eastern 

 Asia. July-Aug. Tiger Lily L. tigrinum Ker 



12. Erythronium L. — Trout Lily 



1. Perianth yellow; style clavate, the stigmas erect, imited ; woods; 



apparently absent from the western part of 111. Apr-May 



- - /s. amcricauuin Ker 



1. Perianth white or pale lavender; style 3-cleft, the recurved stigmas 



1-3 mm long: allu\ial soil in woods, common. Apr. 



E. albidum Nutt. 



13. Camassia Lindl. — Camas 



C. scilloides (Raf. ) Cory. Wild Hyacinth. Moist woods or mead- 

 ows, locally throughout 111. Apr.-June. [C. esculenta sensu auth., non 

 (Raf.) Lindl.; C. frascri Torr.]. Including C. angusta (Engelm. & 

 Gray) Blankinship, a late-flowering plant with deeper colored shorter 

 perianth. Macon Co.: T". H. Chase 11900; Peoria Co.: Schoenbeck. 



14. Muscari Mill. — Grape Hyacinth 



1. Leaves overtopping the scape; open woods, rare, escaped from 



cult.; Piatt Co. Native of Armenia. April 



M. armeniacurn Leichtl. 



