'254 ORDER 93. HYDROPHYLLACE^E. 



6 Stamens exserted. Flowers in forked, revolute cymes HTDPOPHTLUJH 1 



b Stamens included. Flowers solitary, opposite the leaves NEMOPHILA. 2 



e Flowers solitary. Calyx enlarged in fruit ELLISIA. 3 



e Flowers racemed. <l Lobes of the corolla fringe-toothed COSMANTHCS. 4 



d Lobes of the wheel-bell-form corolla entire PHACKLIA. 5 



d Lobes of the tube-bell-forro corolla entire WHIILAVIA. 6 



Corolla wheel-bell-form. Leaves ordinary, with soft hairs HYDROLEA. 7 



e Corolla fnnnel-form. Leaves large, with stingii.g hairs WIGANDIA. 8 



1. HYDROPHYLLUM, Tourn. WATER-LEAP. BURR-FLOWEU. Se- 

 pals slightly united at base. Corolla bell-forin, convolute in bud, with 5 

 double folds (nectaries) inside. Sta. exserted. Caps, globous, 1-colled, 2- 

 valved, 4-seeded, 3 of the seeds mostly abortive. Placentae 2, fleshy, free 

 except at the base and apex, n Leaves large, long-stalked, pinnately or 

 palmately veined, cauline alternate. Cymes scorpoid, bractless. 



Calyx appendaged between the sepals at base. Stamens as long as the cor. . .No. 1 

 Calyx not appendaged. Filaments much exserted Nos. 2 4 



1 H. appendlculatum MX. Hairy; Ivs. palmately 5-lobed, the lower pinnately 



divided, lobes pointed and toothed ; sta. often included ; appendages deflexed, much 

 shorter (1") than sep. (4 5") ; cor. blue. Woods, N. Y. to Wis., & Va. 1 IK- May. 



2 H. Virginlcnm L. Nearly smooth ; leaves pinnatifld ; segments oval-lanceolate, 



pointed, incised, the upper 3 confluent ; petioles long ; ped. still longer, bearing a 

 roundish tuft of pale flowers with hirsute calyxes. Moist woods. If. June. 



3 H. Canadense L. Lvs. smoothish, palmate, roundish, with 5 7 shallow lobes, 



unequally dentate, teeth obtuse-mucronate ; fls. in crowded fascicles ; ped. shorter 

 than the forked petioles : cor. white or purplish. Alpine woods. 1 IJf. June, Jl. 



4 H. macrophyllum N. Whitish, with reversed hairs ; leaves oblong-oval in out- 



line, pinnatifid, and cut into blunt-mucronate teeth ; cymes dense, globous, on long 

 peduncles ; corolla white, 6" ; stamens 10". Rocky woods W. and S. If. June. 



2. NEMOPHILA, N. Cal. 5-parted, the sinuses with reflexed ap- 

 pendages. Cor. wheel-bell-form, lobes rounded, convolute in bud, tube 

 with 5 pairs of folds within. Sta. included. Ov. and caps, as in Hydro- 

 phyllum, the placentae each 2-12-ovuled. (5) Tender and fragile, with pin- 

 uately-parted leaves and solitary, showy flowers. 



* Leaves all or the lower alternate. Flowers not spotted Nos. 1, 2 



* Leaves all opposite. Flowers spotted with blue or brown Nos. 3, 4 



1 N. mlcrocalyx F. & M. Smooth ; leaves triangular, 5-3-cleft, with rounded, mu- 



cronate teeth ; ped. and petioles slender ; corolla 1 2", white, calyx etill smaller ; 

 seeds 1 or 2. Damp woods, S. 3 12', very weak. April. 



2 IV. iNsfaNis. Lvs. oblong, with 7 9 ovate, acute lobes, shorter than peduncles ; fls. 



1' or more broad, the border pure blue with a white centre. California. 



3 N. MACULATA. Leaves 3-7-lobed, tapering and entire at base ; flowers on long ped., 



1J' broad, white, with a violet spot on the apex of each lobe. California. 



4 N. ATOMARIA. Leaves and peduncles nearly as in the last; flowers white, 10 12", 



sprinkled all over with small brown spots. Sierra Mountains. 



3. ELLISIA, L. Cal. 5-parted, equalling the tubular-bell-form corolla, 

 enlarged in fruit. Cor. tube minutely appendaged within. Sta. included. 

 Caps. 2-valved, 4-2-seeded. Leaves pinuatifid, flowers white, May July. 

 K. Nyctelaea L. Weak, Mender; IVB. petiolate, the upper alternate, lobes 911, lin. 



oblong ; ped. 1-flowered. with calyx larger than corolla. Woods. Pa., W and S. If 



