334 HYDROPHYLLACE^. (WATERLEAF FAMILY.) 



lobes imbricated in the bud, and often with reflexcd appendages in the 

 sinuses. Corolla obtusely 5-lobed, convolute or imbricated in the. bud. 

 Stamens 5, inserted into the base of the corolla, and alternate with its 

 lobes : anthers versatile. Ovary free, 1-celled, with 2 parietal placentae, 

 each bearing 2 or more amphitropous ovules. Style slender, 2-cleft. 

 Capsule globose or oblong, loculicidally 2-valved. Seeds reticulated. 

 Embryo small in the axis of hard albumen. 



Synopsis. 



* Lobes of the corolla convolute in the bud. 



1. HYDROPHYLLUM. Calyx without appendages. Stamens exserted. Stems erect. 



2. NEMOPHILA. Calyx appendaged at the sinuses. Stamens included. Stems prostrate. 



* * Lobes of the corolla imbricated in the bud. 



3. PHACEL1A. Calyx without appendages. Capsule 4 -many-seeded. 



1. HYDROPHYLLUM, L. WATERLEAF. 



Calyx 5-parted, the lobes subulate; without appendages. Corolla broadly 

 tubular, 5-cleft, about as long as the calyx, with 5 linear appendages on the 

 tube within, opposite the lobes. Stamens and style exserted : anthers linear. 

 Ovary hispid. Placentae 2, thick and fleshy, connected with the pericarp at 

 the base and apex ; each 2-ovuled. Style filiform, 2-clcft. Capsule globose, 

 2-valved, 1-4-seeded. Erect perennial mostly hairy herbs, with long-petioled 

 pinnately or palmately divided leaves, and white or blue flowers in peduncled 

 cymes, without bracts. 



1. H. Virginicum, L. Stem leafless below, sprinkled, like the leaves, 

 with rigid hairs ; leaves pinnately divided into 5-7 ovate cleft or toothed lobes, 

 paler beneath ; peduncles forking, longer than the petioles ; cymes dense ; calyx- 

 lobes linear, hispid ; filaments slightly hairy. Low woods along the mountains, 

 Georgia, and northward. June. Stem l-2 high. 



2. H. Canadense, L. Smoothish ; leaves orbicular-cordate, palmately 

 5 - 7-lobed, sharply toothed ; cymes dense, on forking peduncles which are 

 shorter than the petioles ; calyx-lobes sparingly hispid ; filaments densely 

 bearded. Mountains of North Carolina, Tennessee, and northward. June. 

 Stem 1 high. Leaves 3' -5' in diameter. Corolla white. 



2. NEMOPHILA, Nutt. 



Calyx 5-parted, with reflexed appendages in the sinuses. Corolla tubular or 

 short bell-shaped, with 10 scale-like appendages at the base of the filaments. 

 Stamens included : anthers ovoid. Ovary hispid, 2- 12-ovuled. Placentae large, 

 lining the walls of the pericarp. Style 2-parted. Capsule globose, 1 - 2-seeded. 

 Tender prostrate annual herbs, with divided leaves, and solitary long pedun- 

 cled flowers opposite the leaves. 



1. N. mierocalyx, Fisch. & Meyer. Pubescent, or at length smoothish ; 

 stem filiform, diffuse ; leaves thin, long-petioled, alternate, 3-lobed ; the lobes 



