334 HYDROPHVLLACE^. (avATERLEAF FAMILY.) 



lobes imbricated in the bud, and often •with reflexed 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 conrolute in the bud. 



1. HYDROPHYLLtlM. Calyx without appendages. Stamens exserted. Steins erect. 



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



* * Lobes of the corolla imbricated in the bud. 



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



1. HYDROPHYLLUM, L. Waterleaf. 



Calyx 5-parte(l, tlie 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. PlacentiB 2, thick and fleshy, connected with the pericarp at 

 the base and apex ; each 2-ovuled. Style filiform, 2-cleft. 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, sliarply 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, Nmt. 



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. Placentue 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. microcalyx, Fisch. & Meyer. Pubescent, or at length smoothish ; 

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



