ORDER 16. HYPERICACE^E. 49 



2. HYPERICUM, L. ST. JOHN'S-WORT. Sep. 5, connected at base, 

 Biibequal. Pet. 5, oblique, contorted in bud. Stam. mostly GO, generally 

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

 3 5, distinct or united. Caps. 1-5-celled. Herbs or shrubs. Flowers 

 cymous, yellow. June August. Figs. 128, 129, 275. 

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

 Stamens 5 15, not at all united. Annuals. Flowers email, (g) 



a Carpels (and styles) 5 or more. Capsule 5-celled Nos. 1, 3 



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



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



b Shrubby. Petals not dotted. Lvs. lanceolate or oblanceolate Nos. 3, 4* 5 



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



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



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



c Half-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, 12 



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 4 Nos. 19, 20 



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



g Flowers in corymbous cymes, orange-colored Nos. 23, 24 



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



1 H, pyramidatum Ait. Herbaceous ; Ivs. sessile, oblong-ovate, acute ; sty. 5 ; 



placentae retroflexed. it O. Pa. to Can. 3 5f. Flowers very large (20- 



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



caps. 5-celled, tipped with the 5 styles. Niagara, &c. If. Flowers 9". 



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



tary, peduncled ; caps. 3-celled, styles united. Mts. N. Car. to Ga. 8 12'. 



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



cymes compound, leafy ; sepals unequal, leafy, ovate, cuspidate. M. W. 3 If. t 

 /3. densiflbrum. Branches, Ivs. and fls. crowded, and smaller. Lvs.l'. Fls. 6". 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. rosmarinif'olium Lam. Erect, sparingly branched : Ivs. linear, shorter than 



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



7 H. fascicitlatum Lam. Shrub much branched, bushy; Ivs. linear, l r , very nar- 



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

 /3. abbreviation. Lvs. very short (23"), tufted in the axils. Car. to Ga. 



8 H. perfora.tum L. Stem 2-edged, branched ; Ivs. with pellucid dots ; sep. lanceo- 



late, half as long as the petals, it Dry pastures. 1 2f. Lvs. 6 10". Flowers 1'. 



9 H. corymbosnm Mnhl. Stems terete, corymbonsly branched ; Ivs. oblong-ovate 



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

 small), i as long as the petals, y Can. to Pa. and Ark. 2f. Lvs. 12'. Flowers 9". 



1 H. maeulatum Walt. Stem terete, corymbously branched ; Ivs. oblong, thickly 

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



1 1 H. aikreum Bartram. Branches spreading, ancipital ; Ivs. thick, lance-ovate, ob- 

 tuse, sessile ; flower- (large) solitary, sessile. Ga. to Ark. 2-4f. Stamens 500 ! t 



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

 tary and in 3'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 



