{^64 



OHDEft 91.— HYDEOPHTLLAOE^. 



FIG. 673. Hydropbyllain Yirjiinicutn, 

 flower: a, corolla cut open, showing the 

 honey-groovGs ; &, ovary and style ; c, 

 section of seed. GENERA- 



% Placentre central, large, many-seeded. Cymes notscorpoid Htdcolka. G 



i Placentai parietal (at least in the middle), bearing few (1 to 4, rarely many) seeds, (b) 

 b Lobes of the corolla convolute in mstivation. (c) 

 b Lobes of the corolla imbricato (quincuntial) in the bad. (d) 



C Stamens exserted. Flowers in forked, scorpoid racemes IlYDROPnTLLUM. 1 



C fitamens included. Flowers eolit'ary, opposite the leaves NEMOPUitA. 3 



d Flowers solitary. Calyx much enlarged in fruit Ellisia. 3 



d Flowers racemed.— Lobes of the corolla entire (seeds 4.) Phaoeha. 4 



— Lobes of the corolla entire (.seeds oo) Edtooa. 5 



—Lobes of the corolla fringed Cosu ANxuire. 6 



1. HYDROPHYL'LUM, . Tourn. Water-leaf Burr-flower. (Gr. 

 vAtip, water, <pvXXov, leaf; the leaves in spring are said to hold water.) 

 Sepals slightly united at base, the sinuses sometimes appendaged ; cor- 

 olla campanulate, convolute in bud, with 5 longitudinal, margined nec- 

 tariferous grooves inside ; stamens exserted ; capsule globous, 1- celled, 

 2-valved, 4-seeded, 3 of the seeds mostly abortive ; placentae 2, fleshy, 

 free except at the base and apex. — 11 Radical Ivs. on long petioles, 

 pinnately or palmately veined, caulino alternate. Cymes scorpoid, 

 braotless. > 



I Calyx nppendagefl between tho sepals at base. Stamens as long as the corolla ... . No. 1 



§ Calyx not appendaged. Filaments much exaerted Nos. 2—4 



1 H. appendiouMtum Mx. Lvs. subpalmately 5-lobed, the lower almost pin- 

 natifid, the lobes dentate, diverging, and with the long petioles, ped. and cal. hir- 

 sute ; Sep. lance-subulate, the appendages at tlio base ovate, acute, 4 times 

 shorter ; cor. glabrous except the minute appendages inside ; stam. included. — 

 N. Y,, near Rochester, to Wis. and Va., in woods. Sta. 12 to 18' high, branched. 

 Petioles ]. to 4' long. Lvs. roundish in outline, the broad, acute lobes pointed 

 and diverging in a stellate manner. Cal. 4 to 5" long, appendages deflexed, 1" 

 long. Cor. blue. May. 



2 H. Virgfnlouni L. Plant nearly smooth ; lvs. pinnaiifid and pinnate, the seg- 

 ments oval-lanceolate, incisely serrate ; fascicles conglomerate ;i ped. longer than 

 the petioles. — -An inhabitant of moist woods, Can to Car. and Western Statci 

 Stem a foot high, bearing large, roundish tufts of flowers, stamens and style very 

 conspicuous, twice the length of the bell-shaped corollas. Leaves few, on long, 

 clasping petioles, with about 5 distinct leaflets, the upper 3 more or less confluent 

 at base, all irregularly toothed. Corollas varying from white to sky-blue. Jn. 



3 H. Canad^nse L. Lvs. smootliish, palmate, roundish,, with 5—7 shallow hies, 

 unequally dentate, teeth obtuse-mucronate ; fls. in crowded fascicles ; ped. shorter 

 than the forked petioles. — Quite different in aspect from the last. Found in alpino 

 woods. Can. to Car. "W. to Ind. Stem 12 — 18' high, with large, roughish leaves, 

 divided into 5 — -1 lobes. Fascicles of fls. dense, terminal, but shorter than the 

 petiola which seems to continue the stem. Cor. white or variously tinged with 

 purple, much longer than the pedicels. Jn., Jl. 



4 H. maoroph^Uum Nutt. Whole plant reversely hispid with white hairs ; bis. 

 oilong-oval, in outline, pinnaiifid, lower segments distinct, upper confluent, all iBcised 

 into rmmded, mucronate teeth, cauline solitary or few, much smaller ; cymes ter- 

 minal, long-pedunoulate, dense-flowered ; cor. glabrous except the grooves inside. 



