RHINANTHACEAE 1207 
24. COLLINSIA. Nutt. Delicate annual herbs, the stem erect, much- 
branched. Leaves opposite: blades toothed, the upper ones sessile or clasping. 
Flowers in loose racemes, long-pedicelled, Ne to foliaeeous bracts, some- 
times in whorls of 3-6. Bractlets none. Calyx-lobes 5, uniform, half as long 
s the tube or more, acute. Corolla two-lipped: tube gibbou S on the posterior 
oe : posterior lip pale or white, shorter than the anterior, proximally wi 
concave-arched portion which abruptly terminates in a transverse-rounded, 
puberulent, palate-like ridge, beyond which the lip a upeurved-ereet with 
free fan-like lobes; anterior lobes projecting, blue, the median one with mar- 
gins upcurved, so that the petal is boat-like, nn exceeded by the flat lat- 
eral lobes. Stamens 4,slightly didynamou 
filaments slender: anthers scarcely exse ana 
sacs divaricate, glabrous. Posterior stamen 
represented by a s knob. Stigma capi- 
tate. Capsule subglobose ewhat flat 
tened laterally, loculicidal and also slightly 
septieidal. Seeds few, smooth, P 
About 30 species, North Americ 
C. verna Nutt. Stem 1-5 dm. tall pu- 
bescent chiefly in 2 end leaf-blades ellip- 
tie-ovate to ovate, Pp serrate- ia 
the upper rou unded to clasping base, the 
lower narrowed to a UE e base m edi- 
cels Baer in fruit 10-45 mm. long: calyx 6—10 mm. long; lobes lanceolate, 
nearly twice as long as the vd rs 10—15 mm. long; lobes Med pei Or 
shallowly notched: E v fms pud. seeds 2.5-3 mm. long, bro 
(INNOCENCE. BLUE-E a Moi ise. especially in ‘alluvial soil, "In 
terior Low Plateaus id adi women “Ton nn. to Mo., Mich., and W. N. vs 
Spr. 
25. LINARIA Mil. Erect annual or perennial herbs, the stem branched, 
sometimes with basal shoots. Leaves alternate, or opposite on the basal shoots: 
blades narrow, entire, sessile. Flowers in racemes, the bracts foliaceous, or 
ch reduced etlets none. Sepals 5, uniform. Corolla 2- ius ps 
or violet: tube spurred at the base anteriorly: posterior lobes mo r Jess 
united and arched: anterior lobes united and spreading, at times iN a z definite 
palate. Stamens 4, didynamous, included: filaments glabrous: anther 
divaricate. Stigma capitate. Capsule o to cylindric, loculic Ta P 
irregular ruptures. Seeds numerous, prismatic-angled and wingless, or flattened 
ang 
and broadly winged.—About 120 species, widely distributed, but most abundant 
in the old World.—SPURRED-SNAPDRAGON. "TOADFLAXES. 
Corolla violet or violet-purple; anterior lip with 2 rounded ridges, but no palate: 
capsule globose or nearly. so: seeds less than 0.5 mm. long, 
wingless: plant annual, or perhaps biennial, with prostrate 
I. LEPTOPLECTRON. 
asal shoots 
Corolla a ee anterior lip with a prominent orange-colored 
palate: capsule ovoid: seeds about 1.5 mm. long, winged: 
plant perennial, all stems erect. II. EULINARIA. 
I. LEPTOPLECTR 
nd nearly glabrous, shorter than the nau corolla 7—12 
ee the spur slender, decurved: capsule 2-3.5 mm 
1. L. canadensis. 
