326 HYDROPHYLLACE.E. (WATERLEAF FAMILY.) 



ORDER 79. HYDROPHYLLACE^E. (WATERLEAP FAM.) 



Herbs, commonly hairy, ivith mostly alternate and cut-lobed leave*, regular 

 5-merous and 5-androutt Jlowers, in aspect between ike foregoing and the next 

 Oi'der; hut the ovary ovoid and entire, \-cclled, with 2 parietal -?nany- 

 ovuled jdacentce. Style 2-cleft above. Pod globular or oblong, 2-valved, 

 4 - many-seeded. Seeds reticulated or pitted, ainphitropons, with a small 

 embryo in cartilaginous albumen. Flowers chiefly blue or white, in one- 

 sided cymes or racemes, which are mostly coiled from the apex when young, 

 and bractless, as in the Borage Family. (A small order of plants, of no 

 marked properties, some of them cultivated for ornament.) See Au 



Synopsis. 



* Ovary lined with the broad and fleshy placentae, which enclose the ovules and seeds (in our 



plants only 4 in number) like an inner pericarp, 

 i- Corolla-lobes convolute in the bud. 



1. HYDROPHYLLUM. Stamens exserted : anthers linear. Calyx unchanged in fruit. 



2. NEMOPII1LA. Stamens included: anthers ovoid. Calyx with appendages at the sinuses, 



somewhat enlarged in fruit. 



H- -i- Corolla-lobes imbricated in the bud. 



3. ELLISIA. Stamens included. Calyx destitute of appendages, enlarged in fruit. 



* * Ovary with narrow parietal placentae, in fruit projecting inwards more or less 



4. PIIACELIA. Corolla with its lobes imbricated in the bud, deciduous. Calyx destitute of 



appendages. 



1. HYDROPIIYL.L.UM, L. WATERLEAF. 



Calyx 5-parted, sometimes with a small appendage in each sinus, early open 

 in the bud. Corolla bell-shaped, 5-cleft; the lobes convolute in the hud; tlio 

 tube furnished with 5 longitudinal linear appendages opposite the lobes, which 

 cohere by their middle, while their edges are folded inwards, forming a nec- 

 tariferous groove. Stamens and style mostly exserted : filaments more or less 

 bearded. Ovary bristly-hairy (as is usual in the family) ; the 2 fleshy placentae 

 expanded so as to line the cell and nearly fill the cavity, soon free from the 

 walls except at the top and bottom, each bearing a pair of ovules on the inner 

 face. Pod ripening 1-4 seeds, spherical. Perennial herbs, with petioled am- 

 ple leaves, and white or pale blue cymose-clustered flowers. (Name formed of 

 8o>p, water, and <frv\\ov. leaf; of no obvious application to these plants.) 



* Calyx naked or occasionally with minute appendages at the sinuses: rootstock* 



creeping, thickish, scaly-toothed. 



1. H. Hiacropliylllliia, Nutt. Rough-hairy; leaves oblong, pinnate, and 

 pinnatijid; the divisions 9-13, ovate, obtuse, coarsely cut-toothed; peduncle very 

 long; calyx-lobes lanceolate-pointed from a broad base, very hairy. Rocky, 

 shaded banks, Ohio, Indiana, Kentucky, and southward. July. Root-leave 6 

 1 long : cyme globular, crowded 



2. II. YirgitliClim, L. Smoothish (l-2high); leaves pinnatcly di- 

 vided ; the divisions 5 - 7 , ovate-lanceolate or oblong, pointed, sharply cut-toothed, 



