832 FLORA. 



of N. Am. and Europe. Our species have been erroneously referred to the Old 

 World genus Wulfenia. 



Corolla present, usually 2-lobed. 1. S. Bullii. 



Corolla none. 2. S. rubra. 



i. Synthyris Bullii (Eaton) Barnhart. Bull's Synthyris. (I. F. f. 3285.) 

 Pubescent, 3-8 dm. high. Basal leaves ovate or orbicular, rounded at the apex, 

 truncate, cordate or reniform at the base, crenulate, 5-13 cm. long, 5-7-nerved, 

 petioled; stem leaves 1-2.5 cm. long, sessile or slightly clasping, crenulate, 

 passing into the bracts of the dense spike; flowers greenish yellow, 4-6 mm. 

 long; corolla variously 2-4-lobed (commonly 2-lobed), somewhat longer than the 

 calyx, its lubes obtuse; spike much elongated in fruit; capsule emarginate. On 

 dry prairies, Ind. to Minn., Mich, and Iowa. May-July. [Wulfenia HougJitoni- 

 ana (Benth.) Greene.] 



2. Synthyris rubra (Hook.) Benth. Western Synthyris. (I. F. f. 3286.) 

 Similar to the preceding but seldom over 3 dm. high. Basal leaves ovate or 

 oblong, 3-8 cm. long, crenulate, petioled, indistinctly nerved; stem leaves ovate 

 or lanceolate, acute, sessile, 0.6-2.5 cm - l° n g'. spike 5-13 cm. long in fruit, its 

 bracts purplish; corolla none; capsule little compressed, emarginate. In dry soil, 

 N. W. Terr, to S. Dak., Neb., Br. Col. and Utah. May-June. [Wulfenia rubra 

 (Hook.) Greene.] 



19. VERONICA L. (See Appendix.) 



Herbs (some exotic species shrubs or trees), with opposite and alternate, rarely 

 verticillate leaves, and mostly small blue, purple, pink or white flowers, racemose, 

 spicate, or solitary. Calyx mostly 4-parted, sometimes 5-parted. Corolla rotate, 

 its tube very short, deeply and more or less unequally 4-lobed (rarely 5-lobed), the 

 lower lobe commonly the narrowest. Stamens 2, divergent; anthers obtuse, their 

 sacs confluent at the summit. Ovary 2-celled; style slender; stigma capitate. 

 Capsule compressed, sometimes very flat, emarginate, obcordate, or 2-lobed, locu- 

 licidally dehiscent. Seeds flat, plano-convex, or excavated on the inner side. 

 [Named for St. Veronica.] About 200 species, of wide distribution. Besides the 

 following, 4 others occur in northwest Am. 



* Flowers racemose in the axils of the leaves, bracteolate. 

 Glabrous, or minutely glandular above (No. 3 rarely hairy) ; brook or swamp plants. 

 Leaves ovate, oval, oblong, or oblong-lanceolate; capsule compressed. 

 Stem leaves sessile, partly clasping, serrulate or entire. 



1. V. Anagallis-aquatica. 

 All the leaves petioled, serrate. 2. V. Americana. 



Leaves linear or linear-lanceolate; capsule very flat. 3. V. scutellata. 



Pubescent, dry soil plants; leaves crenate or dentate. 



Leaves oval or obovate, petioled; pedicels shorter than the calyx. 



4. V. officinalis. 

 Leaves ovate, nearly or quite sessile; pedicels longer than the calyx. 



5. V. Chamaedrys. 

 * * Flowers in terminal spikes or racemes, or solitary in the axils. 



Flowers in terminal spikes. 



Leaves all sessile; capsule elliptic, emarginate. 6. V. Wormskioldii. 



Lower leaves petioled; capsule orbicular, obcordate. 7. V. serpyllifolia. 



Flowers solitary in most of the axils; peduncles shorter than the leaves. 



Erect; glabrous or glandular; capsule emarginate. 8. V. peregrina. 



Diffuse; pubescent; capstile obcordate. 9 V. arvensis. 



Flowers solitary in the axils ; peduncles as long as the leaves, or longer. 



Leaves ovate or oblong, crenate or dentate. 



Corolla not longer than the calyx ; capsule narrowly emarginate. 



10. V, agrestis. 

 Corolla longer than the calyx; capsule broadly emarginate. 



11. V. Byzantina. 

 Leaves orbicular, or broader, 3-5-lobed or crenate 12. V. hederaefolia. 



i. Veronica Anagallis aquatica L. Water Speedwell. Water PIM- 

 PERNEL. (T. F. f. 3287.) Perennial by stolons or leafy shoots; stem glabrous, or 

 glandular-puberulenl above, often rooting at the lower nodes, 3-9 dm. high. 

 Leaves of sterile autumn shoots orbicular to obovate, obtuse, serrulate, narrowed 

 into margined petioles, those of the Bowering stems ovate, oblong, or lanceolate, 



