328 HYDROPHYLLACE2E. (wATERLEAF FAMILY.) 



Placentae (each 2-ovuled), fruit, and seeds much as in Hydrophyllum Delicate 

 and branching annuals, with lobed or divided leaves, the lower opposite, and 

 small whitish flowers. (Named for John Ellis, a distinguished naturalist, long a 

 correspondent of Linnaeus.) 



1. E. Nyctelea, L. Minutely or sparingly roughish-hairy, divergently 

 branched (6' -12' high) ; leaves pinnately parted into 7-13 lanceolate or linear- 

 oblong sparingly cut-toothed divisions ; peduncles solitary in the forks or oppo- 

 site the leaves, 1-flowered; calyx-lobes triangular, tapering to a sharp point, 

 nearly as long as the peduncle, longer than the whitish corolla, in fruit becom- 

 ing almost ' long. Shady places, from Pennsylvania (opposite Trenton, 

 New Jersey, Mr. Laning) to Virginia, Illinois, and southwestward. May- 

 July. 



4. P II A C J2 L. I A , Juss. (Phacelia & Eutoca, R. Br.) 



Calyx 5-parted ; the sinuses naked. Corolla open-bcll-shaped, 5-lobed; tna 

 lobes imbricated in the bud. Filaments slender, often (with the 2-cleft style) 

 exserted : anthers ovoid or oblong. Ovary with 2 narrow linear placentae ad- 

 herent to the walls, in fruit usually projecting inwards more or less, the two often 

 forming an imperfect partition in the ovoid 4 - many-seeded pod. (Ovules 2- 

 30 on each placenta.) Perennial or mostly annual herbs, with either simple, 

 lobed, or divided leaves, and commonly handsome (blue, purple, or white) 

 flowers in one-sided racemes. (Name from <^d/ceXos. a fascicle ; the flowers 

 or racemes being often clustered.) 



$ 1. PHACELIA PROPER. Seeds and ovules only 4 (two on each placenta) : 

 corolla with narrow folds, appendages, or scales within ; the lobes entire. 



1. P. bipinnatifida, Michx. Stem upright, much branched, hairy 

 (l-2high); leaves long-petioled, pinnately 3-5-divided; the divisions or 

 leaflets ovate or oblong-ovate, acute, coarsely and often sparingly cut-lobed or 

 pinnatifid ; racemes elongated, loosely many-flowered, glandular-pubescent ; 

 pedicels about the length of the calyx, spreading or recurved. 1J. ? Shaded 

 banks, in rich soil, Ohio, Indiana, Kentucky, and southward along the moun- 

 tains. May, June. Corolla bright blue, ^' broad, with 5 pairs of longitudinal 

 folds. Stamens bearded below . these, with the style, are either somewhat in- 

 cluded (P. brevistylis, Buckley) or exserted in different individuals. 



2. COSMANTHUS. (Cosmanthus, Nolte. Sect. Eucosmanthus, A. DC., 

 n part.) Seeds and ovules only 4: corolla naked within ; its lobes beautifully 

 fringe-toothed: filaments villous-bearded beloiv : leaves pinnatifid, the upper clasp- 

 ing at the base : flowers long-pedicelled. 



2. P. Purstlii, Buckley. Sparsely hairy; stem erect or ascending, 

 branched (8' -12' high) ; lobes of the stem-leaves 5-9, oblong or lanceolate, acute , 

 raceme many-flowered; calyx-lobes lance-linear ; corolla blue (about ^' in diameter). 

 (J) (P. fimbriata, Pursh., not of Michx. Cosmanthus fimbriatus, Nolte, $*c.) 

 Moist wooded banks, W. Penn. to Illinois and southward. April- Jane. 



3. P. finibrmta, Michx. Slightly hairy, slender; stems spreading or 

 ascending (5' -8' long), few-leaved; lowest leaves 3 -5- divided into roundish 



