106 Spring Flora of Ohio. 



Pent-ste'-mon hir-su'-tus (L.) Willd. [P. pubescens'exA.) Beard-tongue. 

 — Stem 1-2 ft. high, viscid-pubescent (at least in the inflorescence) ; 

 thyrse narrow; corolla dull violet or purple (or partly whitish), very 

 moderately dilated, the throat nearly closed by a villous - bearded 

 palate ; sterile filament densel}- bearded. 



Pent-ste'-mon pent-ste'-mon (L.) Britt. (/'. hcvigatiis vSol.) Beard- 

 tongue. — Stem 2-4 ft. high, mostly glabrous, except the inflorescence; 

 thyrse broader; corolla white (commonly tinged with purple), abruptly 

 and broadly inflated, the throat widely open; sterile filament thinly 

 bearded above. 



Pent-ste'-mon dig-i-ta'-lis (Sweet) Nutt. [P. hcvigatus var. digitalis 

 Gr.) Beard-tongue. — Stem sometimes 5 ft. high; corolla white, larger 

 and more abruptly inflated ; otherwise like the last. 



3. Genus VE-RON'-I-CA. — Corolla 4(rarely 3 or 5)-parted, wheel- 

 shaped ; stamens 2, exserted ; stigma single ; capsule flattened ; leaves 

 mostly opposite. 



A. Flowei-s in axillary racevirs. 

 I). Capsule tui-gid, orbicular. 



Ve-ron'-i-ca an-a-gal'-lis L. Water Speedwell. — Leaves sessile, most 

 of them clasping by a heart-shaped base, ovate, lanceolate, acute, 

 serrate or entire. 



Ve-ron'-i-ca a- mer-i-ca'-na Schw. American Brooklime. — Leaves 

 mostly petioled, ovate or oblong, serrate, thickish, truncate or slightly 

 cordate. 



b. Capsule s/7-o>ig-/y flattened^ 



Ve-ron'-i-ca scu-tel-la'-ta L. Marsh Speedwell. — Smooth, slender and 

 weak; leaves sessile, linear, acute, remotely denticulate; racemes, sev- 

 eral, very slender and zigzag ; flowers few and scattered ; pedicels 

 elongated. 



Ve-ron'-i-ca of-fic-i-na'-lis L. Common Speedwell. — Pubescent, stem 

 prostrate, rooting at base ; leaves short-petioled, obovate, elliptical or 

 wedge-oblong, obtuse, serrate; racemes densely, many-flowered; pedi- 

 cels shorter than the calyx. 



A. Flo7vers i>i a trriiiiiial i aeriiie. 



Ve-ron'-i-ca ser-pyl-li-fo'-li-a L. Thyme-leaved Speedwell.-- Much 



branched at the creeping base, nearly smooth ; leaves ovate or oblong 



