206 



SCROPHULARIACEAE. 



VOL. III. 



or panicles. Calyx campanulate or turbinate, 5-lobed, the lobes longer than or equalling 

 the tube, sometimes foliaceous. Corolla slightly irregular, funnelform, or campanulate- 

 funnelform, the tube villous or pubescent within, the limb spreading, 5-lobed. Stamens 4, 

 didynamous, included, villous or pubescent; filaments slender; anthers all alike, their sacs 

 distinct, parallel, awned at the base. Style filiform. Capsule oblong, acute, loculicidally 

 dehiscent, longer than the calyx. [Greek, thick or hairy mouth, referring to the corolla.] 

 Six species, natives of eastern North America. Type species : Dasistoma aurea Raf. 



Plant glandular-pubescent ; corolla pubescent without. i. D pedicularia. 



Puberulent, cinereous or glabrous ; corolla glabrous without. 

 Cinereous-puberulent. 



Leaves entire, dentate, of some of the lower pinnatifid, firm. 



Leaves entire, undulate or the lower pinnatifid, with entire lobes. 2. D. flava. 

 Upper leaves mostly serrate, lower pinnatifid with toothed lobes. 3. D. serrata. 



Leaves, at least all but the uppermost, pinnatifid. 4- D. grandiflora. 



Glabrous or very nearly so throughtout. 



Leaves all pinnatifid, thin. 5- D. laevigata. 



Leaves entire, or the lowest dentate or incised. 6. D. virginica. 



i. Dasystoma pedicularia (L.) Benth. 

 Fern-leaved or Lousewort False Fox- 

 glove. Fever-weed. Fig. 3812. 



Gerardia pedicularia L. Sp. PI. 611. 1753- 

 Dasystoma pedicu 'aria Benth. in DC. Prodr. 



10 : 521. 1846. 



Annual or biennial, more or less glandu- 

 lar-pubescent, viscid, and with some longer 

 hairs; stem rather slender, much branched, 

 leafy, i-4 high. Leaves sessile, or the 

 lower petioled, i-2-pinnatifid, ovate or 

 ovate-lanceolate in outline, usually broadest 

 at the base, i'~3' long, the segments incised 

 or crenate-dentate ; pedicels slender, ascend- 

 ing, mostly longer than the calyx, i'-2' long 

 in fruit ; calyx-lobes oblong, foliaceous, 

 usually incised or pinnatifid, 3 "-4" long, 

 corolla i'-ii' long, pubescent without, limb 

 about i' broad; capsule pubescent, 5 "-6" 

 long, beak flat. 



In dry woods and thickets, Maine and On- 

 tario to Minnesota, Florida and Missouri. 

 Races differ in pubescence and in leaf-divi- 

 sion. Lousewort. Bushy gerardia. Aug.- 

 Sept. 



Dasystoma pectinata (Nutt.) Benth., of the Southern States, ranging north to Kentucky 

 and Missouri, appears to be a very glandular race. 



2. Dasystoma flava (L.) Wood. Downy 

 False Foxglove. Fig. 3813. 



Gerardia flava L. Sp. PI. 610. 1753- 



D. aurea Raf. Journ. Phys. 89: 09. 1819. 



D. pubescens Benth. in DC. Prodr. 10: 520. 1846. 



Dasystoma flava Wood, Bot. & Flor. 230. 1873. 



Perennial, downy, grayish; stem strict, erect, 

 simple, or with a few nearly erect branches, 2-4 

 high. Leaves oblong, lanceolate or ovate-lanceo- 

 late, usually opposite, rarely whorled in 3's, firm, 

 entire, or the lower sinuate-dentate or sometimes 

 pinnatifid, 3'-6' long, short-petioled, the lobes ob- 

 tuse; the upper much smaller and sessile, passing 

 into the bracts of the raceme ; pedicels stout, usu- 

 ally shorter than the calyx even in fruit; calyx- 

 lobes lonceolate, entire, about as long as the tube ; 

 corolla ii'-2' long, glabrous outside, its tube 

 much expanded above; capsule 8"-io" long, pu- 

 bescent, twice as long as the calyx. 



In dry woods and thickets, Maine to Ontario and 

 Wisconsin, south to southern New York, Georgia 

 and Mississippi. Yellow foxglove. July-Aug. 



