50 HYrEuiCACEjE. (ST. JOHN'S-WORT FAMILY ) 



2. H. Kalllliftmim, L. Bushy, l-3 high; branches 4-anlod : 

 brim '. - crowded, glaucous, oblanccolatc ; flowers few in a 

 i-lu-t-T ; /W> nr>i'e 5-cJ!(d. Wet rocks, Niagara Falls and Northern lakes. 

 Aug. Leaves 1 ' - 2 ' long. Flowers 1 ' wide. 



3. II. prolificum, L. (SHRUBBY ST. JOHX'S-WORT.) Branehlcts 2- 

 i i dtred ; leaves lanceolate-oblong, mostly obtuse, narrowed at the base; flowers 

 numerous, in simple or compound clusters ; pods oblong, 3-celll. New Jersey 

 to Mi'.-higan, Illinois, and soutliward. July- Sept. Shrub l-4 high, with 

 long rather simple shoots, leaves 2' long and ' or more wide, and flowers : \' - 1 

 in diamct'.T. Varies greatly in size, &c. 



Var. deiisifloriim. Exceedingly branched above, l-6 high, the 

 branches slender and crowded with smaller leaves; flowers smaller (' -' in 

 diameter) and more numerous, in crowded compound cymes. (II. densiflomin, 

 & II. galioides, Pui-sh.) Pine barrens of New Jersey, and glades of Western 

 Maryland, Kentucky, and southward. 



* * Perennial herbs: styles (diverging) and cells of the pod 3 : petals and anthers 

 irilh black dots : calyx erect : stamens distinctly in 3 or 5 clusters. 



4. H. PERFORATUM, L. (CoM3iON ST. JoHN's-woRT.) Stem much 

 branched and corymbed, somewhat 2-edged (producing runners from the base) ; 

 leaves elliptical-oblong or linear-oblong, with pellucid dots ; petals (deep yellow) 

 twice the length of the lanceolate acute sepals ; flowers numerous, in open leafy 

 cymes. Pastures and meadows, &c. June -Sept. Too well known every- 

 where as a pernicious weed, which it is difficult to extirpate. Its juices are very 

 acrid. (Nat. from Eu.) 



5. II. COI 1 ) Illbosuill, Muhl. Conspicuously marked with both black 

 and pellucid dots; stem terete, sparingly branched; leaves oblong, somewhat 

 clasping; jlotrers crowded (small); petals pale yellow, much longer than tho 

 oblong sef>als. Damp places ; common. July - Sept. Leaves larger and 

 Bowers much smaller than in No. 4; the petals 2" -3" long, marked with black 

 lines as well as dots. 



$ 3. Stamens very numerous, obscurely clustered : pod l-cel.led, or incompletely 3-celled, 

 the 3 placenta; sometimes borne on short partitions, but not joined in the centre : 

 perennial herbs or loiv shrubs. 



# Sepals foliaceoiis and spreading, unequal : styles more or less united into one. 



6. H. Cllipticum, Hook. Stem simple, herbaceous (1 high), obscure- 

 ly t-angled ; leaves spreading, <ll/}>tical-ol>long, obtuse, thin ; cyme nearly naked, 

 rather few-flowered; sepals oblong; pods ovoid, very obtuse, purple, 1 -celled. - 

 Wet places, New England and Pennsylvania to Lake Superior and northward 

 July, Aug. Petals light yellow, 3" long. 



7. II. ad prtiSSll HI, Barton. Stem simple, herbaceous, or slightly woody 

 at tin- base ( 1- 2 high), obscurely 4-angled below and 2-edged above; lean's 

 ascending, lanceolate or linear-oblong, often acute, thin ; cyme leafy at the base, 

 tew-flowercd ; sejxt/s linear-lanceolate; pods ovoid-oblong, inconij>le1eh/ 3 - ^-celled. 

 Moist places, Kliode Island (Olney), New Jersey, Pennsylvania, and southwest- 

 ward. July, Aug. Leaves 1 $' long. Petals bright yellow, 3" - 5" long. 



