248 Oedeb 18.— HTPBIMCACE!^. 



witli no glands between thetn ; styli^ 3 — 5, distinct or united at base, 

 persistent. — Herbaceous or shrubby plants. Lvs. punctate with pel- 

 lucid dots, opposite, entire. Fls. solitary, or in cymous panicles, 

 yellow. 



§ stamens 25 — ^100, more or less united into sets (a). 

 § Stamens 5 — 15, not at all united (d). 



a Carpels (and styles) 5 or more. Capsule 5-celled - Noa, 1, 2 



a Carpels 3. Capsule 8-celled (the placentas meeting (b). 



a Carpels 3. Capsule 1-ceIled (the placentse not quite meeting (c). 



b Shrubby. Petals not dotted. Leaves lanceolate or oblanceolate Nos. S — 5 



b Shrubby. Petals not dotted. Leaves linear Nos. 6, 7 



b Herbaceous. Petals sprinkled with black dots Nos. 8—10 



c Shrubs. Styles united into one Nos. 11 — U 



c Half-shrubby. Styles united into one Nos. 15 — 18 



C Herbaceous. Styles distinct, at least at the top Nos. 19 — 22 



d Flowers in coryrabous cymes Nos. 23, 24 



d Flowers racemed on the slender branches Nos. 25, 26 



1 H. pyramidatum Alt. Hsrlaceous ; lvs. sessile, dbhng-mate, acute; sty. 5; 

 plaoentaB retroflexed in the cells of the capsule. — 2^ Hills and river banks. Ohio 

 and Peuu. to Can. St. 3 — 5f high, scarcely angular, smooth, rigid. Branches 

 corymbous, erect, 4-angled. Lvs. of the stem 2J^-5' long, ^ as wide, of tho 

 branches about half these dimensions. Fls. very large (IJ' broad) Petals obo- 

 vate. Sta. capillary, 100 or more. Caps. 1' long, ovoid-conioal, tipped with the 

 5 styles. Sds. oo. JL, Aug. 



2 H. Kalmidnum L. Shrubby; lvs. linear-lanceolate, very numerous, obtuse; 

 caps. 5-oelled, tipped with the 5 styles. — Rocks below Niagara Falls, etc. A 

 handsome species, a foot or more in bight. Lvs. an inch in length, slightly revo- 

 lute on the margin, 1-veined, minutely and thickly punctate, sessile. Branches 

 slender and delicate, somewhat 4-angIed. Fls. 9" diam. Sta. very many. Aug. 



3 H. Buokldyi Curtis. Low, diffusely branched from the shrubby base, lvs. 

 wedge-oblong or obovate, subsessile, smooth, very obtuse ; fls. terminal, solitary, 

 peduncled ; s^p. unequal, leafy, obtuse, and with the OO stam. shorter than tho • 

 petals ; caps. 3-celled, styles united. — High. Mts. of N. Car. to Ga. Stems 8 — 1 2' 

 high. Lvs. 6 or 1" by 3 or i". Resembles Aseyram Crux-Andrea. 



4 H. prollficum L. Branching; branches ancipital, smooth; lvs. oblong-lanceo- 

 late, obtuse, narrowed at base, crenulately waved at edge ; cymes compound, 

 leafy ; sep. unequal, leafy, ovate, cuspidate ; petals obovate, a little larger than 

 sepals. — A highly ornamental shrub, 2 — 4f high, prairies and creek shores, Mid. 

 and "W. States. Lvs. 2 — 2J' long, 4 — 6" wide. Fls. 9" diam., orange-yellow m 

 an elongated inflorescence. Sta. CO. Jl., Aug. \. 



13. densifloeum: T. and G. Branches very numerous; lvs. crowded, much 

 smaller (less than 1' long) ; fls. very numerous, in compound cymes, and 

 much smaller (about G" diam.) — E. Tenn. to Fla. (H. densiflorum Ph.) 



5 H. galloides Lam. Branches few, teretB ; lvs. Knear-lanceolate, rather obtuse ; 

 cymules numerous, axillary and terminal, paniculate ; sep. subequal, linear-lanceo- 

 late. — S. Car. to Fla, in damp soil. St. 2 to 3f high, with straight, erect branohea 

 and a smooth bark. Lvs. fascicled in the axils as if whorled, 10 to 15" by 2 to 

 3", dotted with large, pellucid glands. Fls. about 1" diam. Jn., Aug. 



6 H. rosmarinifdlium Lam. St. straight, erect, sparingly branched ; lvs. lin- 

 ear, shorter than the internodes, narrowed at base to a petiole ; cymules dense, few- 

 flowered, panicled. — Ky. to Fla. Smooth and handsome, 18 to 30' high, half 

 shrubby. Lvs. 1' to IJ' long, 1 — 2" wide, revolute-edged, fascicled in the axils 

 as if whorled. Fls. 6" diam. Sep. subequal, about as long as the obovate petals. 

 Jn., Aug. 



7 H. fasciculatum Lam. Shrub much branched, bushy ; lvs. linear, very nar- 

 row, longer than the internodes, sessile ; cymules leaty. — Wet places in pine bar- 

 rens, Ga., Fla. to La., common. Bush 1 to 2f high, very leafy. Lvs. nearly 

 1' in length, recurved or straight, with smaller ones clustered in tho axils. Fla. 

 numerous, 6'' diam. Petals obovate, l-toothed (like Nos. 4, 5) about the length 

 of the linear sepals. Jl., Sept. 



j3. ABERKViATtm. Branches irregular and crooked; lvs. very short (2 to 3"), 

 tufted in the axils ; petals 3 times longer than tho sepals. — Car. to Ga. 



