122. LOBELIACEAE 231 



3. Corolla 12-20 mm lon*r; basal leaves ovate or cordate; [plants of 

 sandy or rocky places in the n. counties; also Fountain Bluff, 

 Jackson Co. June-Aug. [C. rotundifolia sensu auth., non L.] 

 C. inter cc dens Witasek 



2. Specularia Fabr. — Venus" Looking-glass 

 {Triodanis Raf. ) 

 1. Leaves cordate-clasping; capsules 4-6 mm long, ellipsoid, the 

 pores near the middle; sepals always 5; dry sandy soil, com- 

 mon throughout 111. May-June 6". perfoliata (L.) A. DC. 



1. Leaves not clasping; capsules 6-10 mm long, cylindrical-fusiform, 

 the pores toward the apex; sepals of the lower flowers 3 or 4; 



fields, roadsides, and waste places in s. 111. May-June 



S. biflora (R. & P.) F. & M. 



122. Lobeliaceae Dum. — Lobelia Family 



1. Lobelia L. — Lobelia 

 1. Flowers red (rarely pink or white), 3-4 cm long; stem simple, 

 leafy, 50-120 cm tall; wet ground throughout 111. July-Oct. 

 Cardinal-flower. A supposed hybrid with the next species has 



been re{X)rted as L. cardinalis x siphilitica L. cardinalis L. 



1 . Flowers blue or whitish. 

 2. Flowers 1-2.5 cm long, spicate-racemose; stem simple, leafy, 

 30-100 cm tall. 

 3. Stem and leaves sparsely hirsute to glabrous; flowers 2-2.5 

 cm long; calyx-sinuses appendaged with large deflexed 

 auricles; wet ground throughout 111. Aug.-Oct. Blue 

 Cardinal Flower L. siphilitica L. 



3. Stem finely pubescent; leaves puberulent; flowers 1.5-2 cm 



long; calyx-auricles small; dry or rocky woods, or in sandy 

 ground in the s. counties. Aug.-Oct. Downy Lobelia [L. 



puherula var. simulans Fern.] L. puberula Michx. 



2. Flowers 6-10 mm long. 



4. Stem simple; flowers in an elongated spike-like raceme: leaves 



oblanceolate to elliptical, denticulate or repand. 

 5. Calyx-lobes with 10 reflexed subulate appendages as long 

 as the calyx-tube; dry soil, oi' in open woods, locally 

 throughout 111. June-Aug L. Icptostachys A. DC. 



5. Calyx-lobes not appendaged; open woods, or in dry sandy 



soil, common. June-Aug. Spiked Lobelia [L. spicata 



var. hirtrlla A. Gray] L. spicata Lam. 



4. Stem usually paniculately branched; flowers loosely racemose; 

 sinuses of the calyx not appendaged. 



6. Leaves chiefly linear, entire or denticulate; plants glabrous; 



pods not inflated; wet meadows, often in calcareous 

 soil, local; extending southward to Peoria and Wood- 

 ford counties. July-Sept. Kalm's Lobelia L. kalmii L. 



