20 COMMON CANADIAN WILD PLANTS. 



Synopsis of the Genera. 



I Ilyper'icuin. Petals 5, unequal-tiidetl, convolute in the bud, yellow. 

 2. Elo'des. Petals 5, equal- sided, imbricated in the bud, purplish. 



1. HYPER'ICUM, L. ST. JOHN'S WOBT. 

 * Pod 3-celled. Styles 3, separate. Petals with black dots. 



1. H. perfora'tum, L. (COMMON ST. JOHN'S WORT.) Stem 

 much branched, producing runners at the base, slightly 2-edged. 

 Leaves linear-oblong, with transparent dots, easily observed by 

 holding the leaf up to the light. Petals deep yellow. Flowers in 

 open leafy cymes. Fields. 



2. H. COrymbo'sum, Muhl. (CORYMBEDS.) Stem rounded, 

 not so branching as No. 1. Leaves with both black and trails- 

 parent dots, oblong, somewhat clasping. Flowers small, pale 

 yellow, crowded. Damp woods and wet places generally. 



** Pod 5-celled. Styles more or less united. Stamens very many, in 5 clusters, 

 if clustered at all. 



3. H. pyramida'tum, Ait. (GREAT ST. JOHN'S WORT.) Stem 

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

 Flowers very large, the petals about an inch long, and narrowly 

 obovate. 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 westward. 



* * * Pod 1-celled, purple. 



5. H. ellip'ticum, Hook. (ELLIPTICAL-LEAVED 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 yellow. 

 Banks of streams, eastward. 



6. H. nm'tilum, L. (SMALL S.) Stem slender, branching 

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

 the base. Flowers small, not of an inch across. Low grounds. 



7. H. Canadense, L. (CANADA S.) Stem upright, 6-15 

 inches high, with branches oreet. Leaves linear or linear-lance- 

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



