762 SCROPHULARLVCEAE 



3. V. virgatura With. Biennial; stem 5-10 dm. high, glandular-puberulent, 

 purplish; basal leaves oblanceolate or spatulate, 1-3 dm. long, sinuate-dentate, 

 somewhat pubescent; stem-leaves lanceolate, sessile or the upper clasping; cah-x- 

 lobes lanceolate, spreading; corolla yellow. Waste places and roadsides: Calif. 

 — Ariz. — Utah; X.S. — Ont.; adv. from Eu. My- J. 



2. LINARIA (Tourn.) L. Butter-.\nd-eggs, Toad-flax. 



Annual or perennial herbs, with erect stems. Leaves alternate or opposite, 

 or whorled on the shoots. Flowers in terminal racemes, spikes, or panicles; 

 Sepals 5, partialh' imited. CoroUa irregular, 2-lipped; tube spurred at the base; 

 throat partly closed by a convex fold. Stamens 4, didjTiamous, included. Cap- 

 sule short, opening by 3-toothed pores below the apex. Seeds angled and wrin- 

 kled, sometimes winged. 



Corolla yellow, with an orange throat, 2-3 era. long. 1. L. Linaria. 



CoroUa blue or white, 12 mm. or less long. 2. L. texana. 



1. L. Linaria (L.) Karst. Perennial; stem glabrous or puberulent above, 

 1-10 dm. high; leaves linear or nearly so, 2-7 cm. long; racemes dense; cah^x- 

 lobes ovate, acute or acuminate. L. vulgaris Mill. Waste places and fields: 

 Newf. — Ga. — N.M. — Man.; nat. from Eu. Plain — Submont. My-0. 



2. L. texana Scheele. Annual or biennial; stem 2-8 dm. high, glabrous; 

 leaves hnear-spatulate, 1-2.. 5 cm. long; racemes slender, 5-30 cm. long; cah'x-lobes 

 Unear-lanceolate; corolla blue or white, 10-12 mm. long. L. canadensis Coult. «fe 

 Xels., not Dum. Sandv soil: Okla. — Fla. — Tex. — Calif. — Ore. — Mex. Son. 

 Mr-Je. 



3. ANTIRRHINUM (Tourn.) L. Snapdragon. 



Annual or perennial caulescent herbs. Leaves alternate, or the lower oppo- 

 site, entire. Flowers solitary in the upper axils, or in terminal racemes or panicles. 

 Sepals 5, partially united. Corolla irregular, 2-hpped; tube more or less saccate 

 below; throat closed by a convex fold. Stamens 4, included; filaments some- 

 times dilated above. Stj'les united. 0\'TLles numerous. Capsule opening by 

 2 or 3 pores below the apex. Seeds wingless, smooth or wTinkled. 



Stem erect, 1—4 dm. high, with very short straight pedicels. 1. A. Kingii. 



Stem 6-12 dm. high, cUmbing by means of long filLform curved pedicels. 2. A. Cooperi. 



1. A. Kingii S. Wats. Annual; stem slender, somewhat hairy at the base; 

 leaves narrowly lanceolate to linear, 1-3 cm. long, the upper minute; cah-x verv 

 oblique, glandidar-hirsute ; corolla 4-6 mm. long; capsule obhque, subglobose. 

 Gravelly soil: Utah — Calif. Son. ]My-Jl. 



2. A. Cooperi A. Gray. Annual ; lower leaves ovate or oblong, the upper linear, 

 the floral ones minute; corolla bright yellow, about 1 cm. long, conspicuously saccate 

 at the base; palate hairy; capsule globose. Ravines: s Cahf. — s Utah. L. Son. 



4. COLLINSIA Nutt. Blue-eyed Mart, Blue-lips. 



Annual caulescent herbs. Leaves opposite or whorled, narrow, entire or 

 toothed. Flowers sohtary or clustered in the upper axils, perfect, irregiilar. 

 Cah'x-lobes 5. Corolla 2-lipped, violet, pink or white, open; tube short; lower 

 lip 3-lobed, the middle lobe involute. Stamens 4, didynamous, declined, enclosed 

 in the middle lobe of the lower lip of the corolla; staminodium present, but gland- 

 like, near the base of the corolla. Styles united. Capsule ovoid or globose, 

 2-valved, the valves 2-cleft. 



1. C. parviflora Dougl. Annual; stem 1-3 dm. high, at last diffuse and 

 spreading, minutely puberulent; leaves oblong, lanceolate, oblanceolate, or linear, 

 entire or nearly so, the floral ones often in whorls of 3-5; corolla blue, 4-6 mm. 

 long. C. tenella Piper, in part. Shaded hillsides: Ont. — Ariz. — Calif. — B.C. 

 Submont. — Mont. Ap.-Jl. 



5. TONELLA Nutt. 



Annual caulescent herbs. Leaves opposite, ternately divided. Flowers 

 axillary, perfect, sUghtly irregular. Calyx deeply 5-cleft. Corolla obscurely 



