826 nYDROPHYLLACE^. (WATERLEAF FAMILY.) 



ORDKR 79. HYDROPHYLLACE^E. (WATERLEAF FAM.) 



Herbs, commonly hairy, with mostly alternate and cul-lobed leaves, regular 

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

 order; but the ovary ovoid and entire, 1-celltd, with 2 parietal 4-many- 

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

 4 - many-seeded. Seeds reticulated or pitted, amphitropous, 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 Addend. 



Synopsis. 



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



plants only 4 in number') like an inner pericarp. 

 4- Corolla-lobes convolute in the bud. 



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



2. NEMOl'lIlLA. Stamens included : anthers ovoid Calyx wi'.h appendages at the sinuses, 



somewhat enlarged in fruit. 



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

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



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

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

 appendages. 



1. IIYDROPHYLLUUI, L. WATERLEAF. 



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

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

 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 (leshy 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. Tod ripening 1-4 seeds, spherical. Perennial herbs, with pctioled am- 

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

 v&atp, water, and <f>v\\ov, leaf; of no obvious application to these plants., 



* Calyx naked or occasionally with minute appendages at the sinuses : 1 sotstocks 



creeping, thickish, scaly -toothed. 



1. II. lliaci'opliylllllll, Nutt. Itonyh-hairy ; leaves oblong, pinnate, and 

 \nnnatijid; the divisions 9-13, orate, 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* 

 1 long : cyme globular, crowded 



2. II. VirgilliCUIll, L. . Sniouthish (l-2high); leaves pinnnttly di- 

 vided; the divisions f>-7. ovate-lanceolate or oblong, pointed, sharply -cut-toothed, 



