ASTERACEAE 167 



Leaves linear-lanceolate, not clasping. 2. S. leptocarpa. 



1. Specularia perfoliata (L.) A. DC. Venus' Looking-glass. 



In prairies and dry woods over most of the state. Crete; Box Butte 

 County; Lincoln; Riverton; Thedford; Wahoo; Valentine. 



2. Specularia leptocarpa (Nutt.) A. Gray. 

 In dry soil, not common. Lincoln; Minden. 



3. Lobelia. 887. 



Flowers scarlet or red, rarely white, 25 mm. or more long. 



1. L. cardinalis. 

 Flowers blue or white. 



Flowers 20 mm. long or more. 



Sparingly pubescent, leaves thin; lobes of the larger lip of the 



corolla obtuse. 2. L. syphilitica. 



Glabrous or nearly so, leaves thick; lobes of the larger lip of the 



corolla acutish. 2a. L. syphilitica var. ludoviciana. 



Flowers 10 mm. long or less. 



Puberulent, stem simple with a single terminal spike, flowers 



8-10 mm. long, capsule not inflated. 3. L. spicata. 



Pubescent, stems branched, spikes several flowers 4-6 mm. long, 



capsule inflated. 4. L. inflata. 



1. Lobelia cardinalis L. Cardinal-flower. 



In low ground along the Republican River. Franklin. 



2. Lobelia syphilitica L. 



Common in low ground over most of the state. Alliance; Bellevue; 



Crawford; Dismal River; Franklin; Kearney; Laurel; La Platte; 



Weeping Water; Wymore. 



2a. Lobelia syphilitica ludoviciana A. DC. 



Nebraska according to Britten's Manual. 



3. Lobelia spicata Lam. Pale Lobelia, 

 n m_eadows and in dry soil over most of the state. Broken Bow; 



Cherry County; Clearwater; Franklin; Wahoo; Whitman, 



4. Lobelia inflata L. 



Along the Republican River. Franklin. 



2. ASTERACEAE. (COMPOSITAE.) 



Key to the Tribes. 



Flowers all tubular or the marginal ligulate and pistillate or neutral. 

 Receptacle usually naked or bracted, if bristly rays present. 



Involucral bracts green, their tips or margins sometimes scarious. 

 Flowers some of them perfect or pappus of scales or bristles. 

 Receptacle naked or rarely bristly; pappus often capillary. 

 Involucral bracts imbricated in 2-many series. 



Rays wanting; flowers all perfect, never bright yellow. 

 Style-branches flliform-subulate; leaves alternate; pap- 

 pus never plumose nor heads spicate. 



1. Vernonieae. 

 Style-branches thickened, obtuse; leaves opposite or if 

 alternate pappus plumose or heads spicate. 



2. Eupatorieae. 



