198 American Midland Naturalist Monograph No. 7 



usually simple; fields, roadsides, waste places, common; nat. 

 from Eur. June- Aug. Common Mullein V. thapsus L. 



2. Flowers 2.5-4 cm in diameter; leaves only slightly decurrent; 



stem usually branched; waste places, occasional; adv. from 



Eur. July-Aug. Chicago, E. E. Sherff in 1945 



V . phlomoides L. 



1. Plants glabrous below, glandular above; flowers racemose; corolla 

 white or yellow. 



3. Pedicels much longer than the calyx; roadsides and pastures, 



common; nat. from Eur. June- Aug. Moth Mullein 



V . blattaria L. 



3. Pedicels shorter than the calyx; reported from Pulaski Co.; 

 native of Eur V. virgatum Stokes 



2. Chelone L. — Turtlehead 

 1. Corolla white or tinged with pink; sepals obscurely ciliolate; sterile 

 filament green; wet ground in woods, local; chiefly in the north- 

 ern two-thirds of the state. July-Oct. [C. linijolia (Coleman) 

 Pennell ex Rydb. ; C. glabra var. elongata Pennell & Wherry] 

 C. glabra L. 



1. Corolla rose-purple; sepals ciliolate; sterile filament whitish; low 

 woods in the southern and western counties. Aug.-Oct. \C. 

 obliqua var. speciosa Pennell & Wherry] C. obliqua L. 



3. Penstemon Mitch. — Penstemon 

 1. Plants more or less glandular or pubescent, at least on the calyces 

 and pedicels; corolla 1.5-3 cm long; leaves denticulate or entire. 

 2. Stem pubescent or puberulent. 

 3. Sepals at anthesis 3-6 mm long. 



4. Corolla 23-28 mm long, the throat purple, the lobes white; 

 anther-locules about as wide as long, saucer-like at 

 maturity; leaves glabrous or glabrescent throughout, or 

 pubescent with long trichomcs only along the midrib on 

 the lower surface; blufis, dry woods, thickets, local, n.e. 



Ill P. hirsutus (L.) Willd. 



4. Corolla 17-22 mm long, white, merely lined with purple; 

 anther-locules longer than broad, cup-like at maturity; 

 leaves more or less softly puberulent-pubescent over the 

 lower surface; roadsides and dry open woods, common 



throughout 111. May-June P. pallidus Small 



3. Sepals in anthesis 2-3 mm long, acute; corolla 1.5-2 cm long, 

 the throat inflated, only slightly ridged within, the anterior 

 lobes scarcely exceeding the posterior ones; dry woods, rare; 



Pope and Wabash counties. May- June P. deamii Pennell 



2. Stem glabrous (often puberulent in P. calycosus) below the in- 

 florescence. 



