ORDER 16. HYPERICACE^. 49 



2. HYPERICUM, L. ST. JOHN'S-WORT. Sep. 5, connected at ba&e, 

 subequal. Pet. 5, oblique, contorted in bud. Stain, mostly GO, generally 

 cohering in 3 5 sets (polyadelphous), with no intervening glands. Styles 

 8 5, distinct or united. Caps. 1-5-celled. Herbs or shrubs. Flowers 

 cj-moiis, yellow. June August. Figs. 128. 129, 275. 

 Stamens 25 100, more or less united into sets (polyadelphous)., .(a) 

 Stamens 515, not at all united. Annuals. Flowers small, (g) 



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



a Carpels 3, capsule 3-celled (the placentae meeting) ... (6) 



a Carpels 3, capsule 1-celled (the placentae not quite meeting)., .(c) 



b Shrubby. Petals not dotted. Lvs. lanceolate or oblanceolate Nos. 8, 4, 5 



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



b Herbaceous. Petals sprinkled with black dots Nos. 8. 9, 10 



c Shrubs. Styles united into 1 . . . (d) 



c Halt-shrubby. Styles united into 1 . . . (e) 



c Herbaceous. Styles distinct, at least at the top ... (/) 



d Flowers solitary or in 3's, axillary. Stems 2-edged Nos. 11, 13 



d Flowers clustered in a compound terminal cyme Nos. 13, 14 



e Flowers in a leafless, stalked cyme. Leaves obtuse Nos. 15, 16 



e Flowers in a leafy (few-leaved) cyme. Leaves acute Nos. 17, 18 



f Stem and branches 4-cornered or square Nos. 19, 20 



/ Stem and branches terete, not angular Nos. 21, 22 



g Flowers in corymbous cymes, orange-colored Nos. 23, fe4 



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



1 H, pyramtdatum Ait. Herbaceous; Ivs. sessile, oblong-ovate, acute; ety. 5; 



placenta; retroflexed. 24 O. Pa. to Can. 3 5f. Flowers very large (20- 



2 H. Kalmla-num L. Shrubby; Ivs. linear-lanceolate, very numerous, obtuse; 



caps. 5-ce!lod, tipped with the 5 styles. Niagara, &e. If. Flowers 9". 



3 H. Buckleyl Curtis. Low, diffuse, shrubby ; Ivs. obovate, very obtuse ; fls. soli 



tary, pednncled : caps. 3-celled, styles united. Mts. N. Car. to Ga. 812'. 



4 H. prolificum L. Branches ancipital, smooth; Ivs. oblong-lanceolate, obtuse; 



cymes compound, leafy : sepals unequal, leafy, ovate, cuspidate. M. W. 3 4f. t 

 /3. rtfn*lflbrtim. Branches. Ivs. and fls. crowded, and smaller. Lvs.l'. Fls. (>". South. 



5 H. galloides Lam. Branches erect, terete; Ivs. linear-lanceolate; cymules axil 



lary and terminal, paniculate ; sep. subequal, linear-lanceolate. S. Car. to Fla. 2 3f. 



6 H. rosmarlnlfollum Lam. Erect, sparingly branched : Ivs. linear, shorter than 



the internofles, narrowed to a petiole. South. Handsome. 2f. 



7 H. fasciciilatum Lam. Shrub much branched, bushy; Ivs. linear, 1', very nar- 



row, longer than the internodes. sessile ; cymules leafy. Pine-barrens, South. 1 2f. 

 ft. nbbrertatum. Lvs. very short (23"), tufted in the axils. Car. to Ga. 



8 H. per f'ori turn L. Stem 2-edgecl, branched; Ivs. with pellucid dots ; sep. lanceo- 



late, half as long as the petals. U Dry pastures. 1 2f. Lvs. (5 W. Flowers 1'. 



9 H. < orynibosiim Muhl. Stems terete, corymbously branched ; Ivs. oblong-ovate 



or oval, obtuse, marked with black (as well as pellucid) dots : sep. ovate, acute (very 

 small). | as long as the petals. 11 Can. to Pa. and Ark. 2f. Lvs. 12'. Flowers ". 



10 H. maculatum Walt. Stem terete, corymbonsly branched ; Ivs. oblong, thickly 

 sprinkled with black dots ; sep. lanceolate, il S. Car. to Fla. 2 4f. Lvs. 1'. Fls. 10". 



11 H. aureum Bartram. Branches spreading, ancipital ; Ivs. thick, lance-ovate, ob- 

 tuse, sessile; flowei-- (large) solitary, sessile. Ga. to Ark. 2 4f. Stamens 5(Tx! t 



12 H. ambjsuiim Ell. Branches ancipital; Ivs. lance-linear, thin, acute; fls. soli- 

 tary and in H's in the axils of the upper leaves. Ga. 1 2f. Flowers 8". 



13 H. myrtifolium L. St. terete; Ivs. thick, ovate, or oblong, cordate-clasping ; 

 fls. in a leafy compound fastigiate cyme, the dichotomal sessile. Ga Fla. 1 2f. 



3 



