326 HTDROPHTLLACK/E. (WATERLEAF FAMILY.) 



Order 79. HYDROPHYLLACE^. (Waterleaf Fau.) 



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

 5-merous and 5-a.ndrous flowers, in aspect between the foregoing and the next 

 order; but the ovary ovoid and entire, l-celled, with 2 parietal 4-many- 

 ovuled placentce. — 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.) 



Synopsis. 



* Ovary lined with the broad and fleshy placentee, which enclose the ovulea and seeds (in our 



plants only 4 in number) like an inner pericarp. 

 ■t- Corolla-lobes convolute in the bud. 



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



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



somewhat enlarged in fruit. 



.*- ^- 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 m(*e or less 

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

 appendages. 



1. lIYDROPHYL,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 bud; the 

 tube furnished with 5 longitudinal linear appendages opposite the lobes, \Yliich 

 cohere by their middle, while their edges arc 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 fi-co from tlie 

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

 foce. I'od ripening 1 -4 seeds, splierical. — Perennial hei'bs, with petiolcd am- 

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

 vboip, water, and (piWov, leaf; of no obvious application to these plants.) 



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



creeping, thickish, scaly-toothed. 



1. H. macropll^IUini, Nutt. Rough-hairy; leaves oblong, pinnate, and 

 pinnatifid; the divisions 9 - 13, ovate, obtuse, coarsely cut-toothed ; peduncle veiy 

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

 shaded hanks, Ohio, Indiana, Kentucky, and southward. July. — Root-leaves 

 1° long: cyme globular, crowded. 



2. II. Vil'gillicuni, L. SmootUsh (l°-2°high); leaves pinnutely di- 

 vided ; the divisions 5-7, ovale.-IanceoJale or oblong, pointed, sharply cut-tootlied, 



