226 OuDJUt 8. SCROPUULARIACEJ5. 



P. IMPERIALIS. In park?, 40f high. Flower-buds formed in Autumn, opening in the 

 following Spring. Corolla near 2'. Tree of rapid growth and kingly port. 



20. MIMULUS, L. MONKEY-FLOWER. Calyx tubular, 5-angled, 5- 

 toothed. Corolla ringent, the upper lip reflected at the sides, palate of the 

 lower lip prominent Stig. thick, bifid. Caps, co-seeded. Herbs prostrate 

 or erect, with square stems and opposite Ivs. Ped. axillary, solitary, 1-flwd. 



Leaves pinnate-veined. Flowers blue (wild) or yellow (cultivated) Nos. 1, 2, 6 



Leaves palmate-veined. Flowers yellow or scarlet Nos. 3, 4, 5 



1 OT. ringens L. Lvs. sessile, smooth, lanceolate, acuminate; ped. axillary, longer 



than the flowers. 1(. A common inhabitant of ditches and mud soils. 2f. Flowers 

 large, (!'), pale blue, yellow-mouthed, appearing in July and August. 



2 M. iilatus Ait. Leaves petiolate, smooth, ovate, acuminate ; ped shorter than the 



fls. ; st. winged at the 4 corners. 2f N. Y., W. and S., in muddy places. 2f. Aug. 



3 M. Jamesli Torr. Stems diffuse, rooting ; leaves snbentire, round-reniform, 5-7- 



veined, the upper as long as the peduncles of the small yellow fls. L. Sup., and W. 



4 M. LUTEUS. Lvs. round-ovate, the cauline sessile or clasping, shorter than the pedun- 



cles ; calyx ovoid, half as long as the broad, large, yellow, spotted flowers. Cal. 



5 M. CARDINALIS. Branching, villous-clammy ; leaves ovate, narrowed to the clasping 



base, shorter than the long p^d. ; cal. large, inflated ; cor. ample, rose-orange. Cal. 



6 M. MOSCHATUS. Musk Plant. Decumbent, hairy-viscid ; leaves ovate, dentate ; cor. 



tube exceeding the calyx, yellow. Oregon. Smells strongly of musk. 



21. TORENIA, L. Calyx tubular, with prominent angles, oblique. 

 Cor. ringent, upper lip notched, lower larger, trifid. Sta. 4, arched beneath 

 the upper lip, the longer pair appendaged at base. Stigma double. Cap- 

 sules included. Herbs tropical, diffuse, with opp. leaves and racemed fls. 



T. ASIATICA. Lvs. petiolate, lance-ovate, crenate-dentate ; calyx acute at base, J' ; cor. 

 twice longer, ample, pale purple tipped with violet. 2f + , trailing. 



22. CONOBEA, Aublet. Calyx 5-parted, equal. Upper lip of the. 

 corolla 2-lobed, lower lip 3-parted. Fertile sta. 4, anth. approximating by 

 pairs, cells parallel. Caps, round-ovoid, oo-seeded. Herbs, with opposite 

 leaves. Peduncles axillary, solitary or in pairs, 1-flowered. 



C, in ill t i tida Benth. Low, diffusely-branched, puberulent ; leaves petiolate, pinnately 

 dissected ; segments linear or cuneate, lobed or entire, obtuse ; cor. greenish, scarcely 

 exserted (2"), lobes entire. (T) Sandy banks of rivers, O. to La. 612'. July. 



23. HERPESTIS, Gaert. Calyx unequally 5-parted. Corolla subbila- 

 biate, upper lip emarginate or 2-lobed, lower 3-lobed. Sta. 4, fertile. Caps. 

 2-furrowed, valves parallel with the dissepiment. Seeds oo, small. U 

 Obscure weeds with opposite leaves. Peduncles 1-flowered, axillary, or 

 subracemous, often with *'vo bractlets near the calyx. 



Leaves feather-veined, Oi obscurely 1-3-vetned. Cor. yellow, or bluish Nos. 1, 3 



Leaves palmately m&ny-tf -9-)veincd, subentire. Corolla blue Nos. 3, 4 



1 H. iiigrescens Benth EreU ; St. square, branched ; leaves oblanceolate, crenate- 



serrate above ; ped. equalling or exceeding the leaves ; corolla yellowish, upper lip 

 rounded, entire. Wet pi., S. 1 2f. Cor. rather longer (5") than cal. Blackens in drying. 



2 H. M.onniera llumb. Prostrate, fleshy ; Ivs. wedge-obovate, subentire ; ped. as 



long (9") as the Ivs. ; fls. few, bluish ; cor. 4'' wide, nearly regular. Wet banks, Pa., & S. 



3 H. amplexicaulis Ph. Stem submersed, woolly ; leaves ovate, cordate-clasping, 



