66 



HYDRO PHYLLACEAE. 



VOL. III. 



H. patens Britton, of Minnesota, differs in having the calyx-segments appressed to the corolla, 

 the corolla-segments with spreading tips. 



2. Hydrophyllum macrophyllum Nutt. 

 Large-leaved Water-leaf. Fig. 3485. 



H. macrophyllum Nutt. Journ. Phila. Acad. 7: in. 



1834- 



Perennial by scaly rootstocks, villous-hirsute 

 all over; stem rather stout, 2-3 high. Lower 

 leaves long-petioled, 8'-i2' long, deeply pinnatifid 

 or pinnately divided into 7-13 oval or ovate obtuse 

 coarsely dentate segments i'-3' long; upper leaves 

 similar, smaller, shorter-petioled and with fewer 

 segments; cymes long-peduncled, simple or fork- 

 ed, very dense; peduncles stout; pedicels short; 

 flowers nearly white ; calyx cleft to below the 

 middle, its lobes lanceolate, erect, white-hispid, 

 the sinuses nbt appendaged; corolla 5" -6" long; 

 anthers oblong; capsule globose, densely white- 

 hispid, \\" in diameter, enclosed by the calyx. 



In rich woods, Virginia to Ohio, Illinois, Alabama 

 and Tennessee. Ascends to 4000 ft. in Virginia. 



3. Hydrcphyllum appendiculatum Michx. 

 Appendaged Water-leaf. Fig. 3486. 



H. appendiculatum Michx. Fl. Bor. Am. i: 134. 1803. 



Biennial, rough-hairy all over ; stem slender, simple 

 or usually branched, weak, i-2 long, somewhat 

 viscid above. Lower and basal leaves long-petioled, 

 pinnatifid or pinnately divided into 5-7 ovate or oval, 

 acute or obtusish, irregularly dentate or incised, mem- 

 branous segments ; upper leaves smaller and shorter- 

 petioled, ovate to orbicular, variously lobed, the lobes 

 acute and dentate ; cymes loose, branched, the slender 

 pedicels 4"-io" long; calyx parted to near the base, 

 enlarging in fruit, the segments triangular-lanceolate, 

 acuminate, spreading, with a short reflexed appendage 

 in each sinus ; corolla violet or purple, 6"-7" long ; 

 stamens little exserted; capsule about ij" in diameter. 



In woods, Ontario to New York, North Carolina, west to 

 Minnesota and Kansas. May-June. 



4. Hydrophyllum canadense L. Broad- 

 leaved Water-leaf. Fig. 3487. 

 H. canadense L. Syst. Ed. 10, 919. 1759. 



Perennial by scaly rootstocks ; stems rather 

 slender, commonly simple, glabrous or nearly so, 

 i-2i high. Leaves nearly orbicular, cordate, 

 sparingly pubescent, at least above, palmately 

 5-g-lobed, the lower long-petioled, often 12' 

 broad, occasionally with I or 2 pairs of small 

 segments on the petiole; upper leaves smaller, 

 but usually 4'-7' broad ; lobes ovate, acuminate, 

 dentate ; peduncles shorter than the leaves ; cymes 

 dense or becoming loose, simple or forked ; pedi- 

 cels short, nearly glabrous; calyx cleft nearly to 

 the base, its segments linear-lanceolate, acute, 

 nearly or quite glabrous, sometimes with a minute 

 tooth in each sinus ; corolla campanulate-rotate, 

 white to purplish anthers linear-oblong; capsule 

 2" in diameter. 



In woods, Vermont to New York, North Carolina, 

 Ontario, Illinois and Kentucky. Ascends to 4000 ft. in Virginia. June-Aug. 



