1 66 



SCROPHULARIACEAE. 



[Vol. III. 



i. Wulfenia Houghtoniana (Benth. ) Greene. 



Houghton's Wulfenia. (Fig. 3285.) 



Synthyris Houghtoniana Benth. in DC. Prodr. 10: 454. 



1846. 

 Wulfenia Houghtoniana Greene, Erythea, 2: 83. 1894. 



Pubescent; stem stout, i-2 l /i high. Basal leaves 

 ovate or orbicular, rounded at the apex, truncate, cor- 

 date or reuiform at the base, crenulate all around, 2 / ~5 / 

 long, 5-7-nerved, petioled, the petiole usually shorter 

 than the blade; stem leaves small, y 2 '-\' long, sessile 

 or slightly clasping, crenulate, obtuse, or acute, pass- 

 ing gradually into the bracts of the dense spike; flowers 

 greenish yellow, 2 // ~3 // long; corolla present, variously 

 2-4-lobed (commonly 2-lobed), somewhat longer than 

 the calyx, its lobes obtuse, the stamens inserted on its 

 base; spike much elongated in fruit; capsule emargin- 

 ate, slightly exceeding the calyx. 



On dry prairies, Indiana to Minnesota, Michigan and 

 Iowa. May-July. 



,0 



2. Wulfenia rubra (Hook.) Greene. Western 

 Wulfenia. (Fig. 3286.) 



Gvmnandra rubra Hook. Fl. Bor. Amer. 2: 103. pi. 172. 



1838. 

 Synthyris rubra Benth. in DC. Prodr. 10: 455. 1846. 

 Wulfenia rubra Greene, Erythea, 2: 83. 1894. 



Similar to the preceding species but lower, pubes- 

 cent or tomentose, seldom over i high. Basal leaves 

 ovate or oblong, obtuse or acute at the apex, narrowed, 

 truncate or cordate at the base, 1%.'-^' l n g. crenulate, 

 petioled, indistinctly nerved; stem leaves ovate or 

 lanceolate, acute, sessile, crenulate, or entire, % , -\ r 

 long; spike very dense, i / -2 / long in flower, 2 / -5 / long 

 in fruit, its bracts purplish; corolla none; stamens in- 

 serted on the outer side of the hypogynous disk; cap- 

 sule little compressed, emarginate, slightly longer than 

 the calyx. 



In dry soil, Northwest Territory to Nebraska, west to 

 British Columbia and Utah. May-June. 



19. VERONICA L. Sp. PI. 9. 1753. 



Annual or perennial herbs (some exotic species shrubs or trees), with opposite and alter- 

 nate, rarely verticillate leaves, and mostly small blue purple pink or white flowers, terminal 

 or axillary, racemose, spicate, or solitary. Calyx mostly 4-parted, sometimes 5-parted, the 

 segments oblong or ovate. Corolla rotate, its tube very short, deeply and more or less un- 

 equally 4-lobcd (rarely 5-lobed) the lower lobe commonly the narrowest. Stamens 2, diver- 

 gent, inserted on either side and at the base of the upper corolla-lobe; anthers obtuse, their 

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

 capitate; ovules few or numerous in each cavity. Capsule more or less compressed, some- 

 times very flat, emarginate, obcordate, or 2-lobed, loculicidally dehiscent. Seeds smooth or 

 rough, flat, plano-convex, or excavated on the inner side. [Named for St. Veronica.] 



About 200 species, of wide geographic distribution. Besides the following, 3 others occur in 

 northwest America. 



-;;- 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, parti y clasping, serrulate or entire. 1. V. 



All the leaves petioled, serrate. 

 Leaves linear or linear-lanceolate; capsule very flat. 

 Pubescent, dry soil plants; leaves crenate or dentate. 



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

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



-;;- -;:- Flowers in terminal spikes or racemes, or solitary in the axils 



Flowers in terminal spikes. 



Leaves all sessile; capsule elliptic, emarginate. 6. 



Lower leaves petioled: capsule orbicular, obcordate. 7. 

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



Erect; glabrous or glandular; capsule emarginate. 8. 



Diffuse; pubescent; capsule obcordate. 9. 



4 nagallis-aquatica. 



2. V. Americana. 



3. V. scut el lata. 



4- 

 5- 



V. officinalis. 

 V. Chamaedrys. 



V. alpina. 



V. serpyllifolia. 



J', percgrina. 

 V. arvensis. 



