50 HYPERICACE.E. (ST. JOHN'S-WORT FAMILY.) 



2. II, Kalmifanum, L. Bushy, l-3 high; branches 4-angled : 

 branchlets 2^edged ; leaves crowded, glaucous, oblanceolate ; flowers few in a 

 cluster ; pods ovate 5-celled. Wet rocks, Niagara Ealls and Northern lakes. 

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



3. H. prolificum, L. (SHRUBBY ST. JOHN'S-WORT.) Branchlets 2- 

 edged ; leaves lanceolate-oblong, mostly obtuse, nan-owed at the base ; flowers 

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

 to Michigan, Illinois, and southward. July -Sept. Shrub l-4 high, with 

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

 in diameter. Varies greatly in size, &c. 



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

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

 diameter) and more numerous, in crowded compound cymes. '(H. densiflorum, 

 & H. galioides, Pursh.) 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 

 / - with black dots : calyx erect : stamens distinctly in 3 or 5 clusters. 



4. H. PERFORATUM, L. (COMMON 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 s every- 

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

 acrid. (Nat. from Eu.) 



5. H. coryinbosiim, Muhl. Conspicuously marked with both black 

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

 clasping ; flowers crowded '( small ); petals pale yellow, much longer than the 

 oblong sepals. Damp places; common. July -Sept. Leaves larger and 

 flowers 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 1-cetted, or incompletely 3-celled, 

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

 perennial herbs or low shrubs. 

 * Sepals foliaceous and spreading, unequal : styles more or less united into one. 



6. II. ellipticum, Hook. Stem simple, herbaceous (1 high), obscure- 

 ly 4-angled ; leaves spreading, elliptical-oblong, 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. H. adpreSSimi, Barton. Stem simple, herbaceous, or slightly wood} 

 at the base (l-2high), obscurely 4-angled below and 2-edged abo-ve; leave* 

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

 few-flowered ; sepals linear-lanceolate ; pods ovoid-oblong, incompletely 3 -^-celled. 

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

 ward. July, Aug. Leaves l' long. Petfels bright yel^w, 3 - 5" long. 



