Vol.. III.] 



FIGWORT FAMILY. 



173 



24. DASYSTOMA Raf. Journ. Phys. 89: 99. 1819. 

 Large erect simple or branched, glandular-puberulent, pubescent or glabrous, annual 

 or perennial herbs, partly parasitic on the roots of other plants, with opposite or some 

 alternate leaves, and large showy yellow flowers, in terminal mostly leafy-bracted racemes 

 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, many-seeded, longer than the calyx. [Greek, thick or hairy mouth, referring 

 to the corolla.] 



Six species, natives of eastern North America. 

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



Puberulent, cinereous or glabrous; corolla glabrous without. 

 Cinereous-puberulent. 



Leaves entire, dentate, or some of the lower pinnatifid, firm. 2. D.flava. 



Leaves all pinnatifid, thin. 3. D. grandijlora. 



Glabrous or very nearly so throughout. 



Leaves entire, or the lowest dentate or incised. 4. D. laevigata. 



Leaves, at least all but the uppermost, pinnatifid. 5. D. Virginica. 



i. Dasystoma Pedicularia (L. ) Benth. Fern-leaved or Lousewort False 



Foxglove. (Fig. 3303.) 



Gerardia Pedicularia L. Sp. PI. 6ri. 1753. 

 Dasystoma Pedicularia Benth. in DC. Prodr. 

 10:521. 1846. 



Annual or biennial, glandular-pubes- 

 cent, viscid, and with some longer hairs; 

 stem rather slender, much branched, 

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

 lower petioled, 1-2-pinnatifid, ovate or 

 ovate-lanceolate in outline, usually broad- 

 est at the base, i / -3 / long, the segments 

 incised or crenate-dentate; pedicels slen- 

 der, ascending, mostly longer than the 

 calyx, i / -2 / long in fruit; calyx-lobes ob- 

 long, foliaceous, usually incised or pin- 

 natifid, 3 // -4 // long, corolla i'-i j^' long, 

 pubescent without, the limb about 1/ 

 broad; capsule pubescent, 5 // -6 // long, its 

 beak flat. 



In dry woods and thickets, Maine and On- 

 tario to Minnesota, south to Florida and 

 Missouri. Aug.-Sept. 



2. Dasystoma flava 



Downy False Foxglove. 



Gerardia flava L. Sp. PI. 610. 



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



Dasystoma flava Wood, Bot. & Flor. 230. 



(L.) Wood. 

 (Fig. 3304.) 



1753- 



1846. 



i873- 



Perennial, downy, grayish; stem strict, erect, 

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

 4 high. Leaves oblong, lanceolate or ovate- 

 lanceolate, firm, entire, or the lower sinuate- 

 dentate or sometimes pinnatifid, 3 / -6 / long, 

 short- petioled, the lobes obtuse; the upper much 

 smaller and sessile, passing into the bracts of the 

 raceme; pedicels stout, usually shorter than the 

 calyx even in fruit; calyx-lobes lanceolate, en- 

 tire, about as long as the tube; corolla i^4 / -2 / 

 long, glabrous outside, its tube much expanded 

 above; capsule 8 // -io // long, pubescent, twice as 

 long as the calyx. 



In dry woods and thickets, eastern Massachusetts 

 to Ontario and Wisconsin, south to southern New 

 York, Georgia and Mississippi. July-Aug. 



