HYPEEICACE^. 31 



clasping. Flowers small, pale yellow, crowded, c.orymooo,. — 

 Damp woods and wet places generally. 



•* Pod S-celled. Styles more or less united. Stamens very many, in B 

 clusters, if clustered at all. 



3. H. pyramida'tum, Ait. (Great St. John's- wort.) 

 Stem 8-5 feet high. Leaves 2-3 inches long, somewhat 

 clasping. Mowers very large, the petals about an inch long, 

 and narrowly ohovate. Stamens showy. Pod conical, 

 large. — Along streams ; not common. 



4. H. Kalmia'num, L. (Kalm's S.) Shrubby, a foot or 

 more in height ; leaves linear-lanceolate, crowded, revolute 

 on the margins, thickly punctate, and sessile. Flowers 

 about 1 inch across, in clusters. — Niagara Falls and west- 

 ward. 



* * * Pod I-celled, purple. 



5. H. elllp'tieum, Hook. (Elmptical-lbaved S.) Stem 

 about 1 foot high , not branched. Leaves spreading, elliptical- 

 oblong, obtuse, thin. Flowers rather few, showy, in a nearly 

 naked cyme. Pod purple, ovoid, obtuse. Petals pale yel- 

 low. — Banks of streams, eastward. 



6. H. mu'tilum, L. (Small S.) Stem slender, branching 

 above, hardly a foot high. Leaves 5-nerved. Cymes leafy 

 at the base. Mowers small, not J of an inch across. — ^Low 

 grounds. 



7. H. Canadense, L. (Canada S.J Stem upright, 6-15 

 inches high, with branches erect. Leaves linear or linear- 

 lanceolate, 3-nerved at the base, the upper ones acute, sessile. 

 Cymes naked. Pod much longer than the calyx. Flowers 

 small, deep yellow. — Wet, sandy places. 



a. ELO'DES. Adans. Maksh St. John's-woet. 

 E. Virgin'iea, Natt. {E. campanulata, Pursh.) Stem 

 smooth.Leaves oblong or oval, clasping, often purple-veined, 

 obtuse, conspicuously dotted beneath. Flowers flesh- 

 coloured, in the axils, and at the summit of the stem. The 

 whole plant is of a purplish hue. — Marshes. 



