MOXOPETALOUS EXOGENOUS PLANTS. 425 



its lobes; anthers versatile; ovary free, 1-celled, with 2 

 parietal placeiitse, 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 the hard albumen. 



SYNOPSIS. 



* Lobes of the corolla convolute in the bud. 



Calyx without appendages. Stamens exserted. Stems erect Hydrophtllum. 



appendaged at the sinuses. Stamens included. Stems prostrate. NsxoTBih a. 



** Lobes of the corolla imbricated in the bud. 

 Calyx without appendages. Capsule 4r-many-seeded Phacklia. 



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 

 \\\^^\di', placentcB 2, thick and fleshy, connected with the 

 pericarp at the base and apex, each 2-ovuled; siff//e filiform, 

 2-cleft; capsule globose, 2-valved, 1-4-seeded. — Erect pe- 

 rennial mostly hairy hei'bs, with long-petioled pinnately or 

 palmately divided leaves, and white or blue flowers in pe- 

 duncled cymes, without bracts. 



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 ; pedtmcles 

 forkhig, longer than the petioles; cy7nes dense ; calyxAohes 

 linear, hispid; filaments slightly hairy. Low woods along 

 the mountains. June. Stem l°-2° high. 



NEMOPHILA, Nutt. 



Calyx 5-parted, with reflexed appendages in the sinuses ; 

 corolla tubular or short bell-shaped, with 10 scale-like ap- 



