06 



IIVDROIMIYLLACEAK. 



Vol.111. 



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. 



//. macrophyllum Nutt. Journ. Phila, Acad. 7: m. 



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 1-3' long; upper leaves 

 similar, smaller, shorter-petioled and with fewer 

 segments ; cymes long-pedunclcd, 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 not appendaged ; corolla 5"-6" long; 

 anthers oblong; capsule globose, densely white- 

 hispid, I J" 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, l-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. 



Ontario, Illinois and Kentucky. 



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

 sparingly pubescent, at least above, palmately 

 5-9-lobed, the lower long-petioled, often 12' 

 broad, occasionally with 1 or 2 pairs of small 

 segments on the petiole ; upper leaves smaller, 

 but usually 4'-"' 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, 

 Ascends to 4000 ft. in Virginia. June-Aug. 



