Hypericum 



Hypericaceae 



673 



50 



Map 1403 



Hypericum Ascyron L. 



Leaves ovate and acute or the lower oval and obtuse; stems generally 

 simple, if branched, the branches strict; inflorescence subulate-bracted ; 

 capsules 4-5 mm long. (See excluded species no. 447, p. 1074.) ....... 



H. gymnanthemum. 



Petals pinkish or reddish purple, imbricate in the bud. 



Leaves sessile or partly clasping, not conspicuously narrowed at the base. 



Leaf blades broadest at the base or below the middle, mostly 2-5 cm long, copiously 

 glandular beneath. 



Sepals acute at the apex ; styles 2-3 mm long 17. H. virginicum. 



Sepals obtuse or rounded at the apex; styles 0.5-1 (-2) mm long 



17a. H. virginicum var. Fraseri. 



Leaf blades broadest above the middle, mostly 5-15 cm long, not glandular below 



or only with a few glands ; mature sepals about 5 mm long 



18. H. hibulosum. 



Leaves petiolate, copiously glandular beneath, conspicuously narrowed at the base. . . 

 18a. H. tubulosum var. Walteri. 



1. Hypericum Ascyron L. Giant St. Johnswort. Map 1403. Moist 

 alluvial banks of streams. All of our specimens were growing in dense 

 shade. Rare. 



W. Que. to Man., southw. through Vt. and N. Y. to Pa., 111., Mo., and 



Kans. 



2. Hypericum Kalmianum L. Kalm Hypericum. Map 1404. In the 

 open in moist, sandy soil in a few of the northern counties. Local. Does 

 well in cultivation in a black loam soil for a short time. 



Que. and along the Great Lakes to Wis., southw. to N. Y. and 111. 



3. Hypericum frondosum Michx. (Jour. Arnold Arb. 19: 149. 1938.) 

 (Hypericum aureum Bartr.) Golden St. Johnswort. Map 1405. A few 

 plants of this southern species were found in 1935 by Miss Edna Banta 

 along "Brough's Trail" in Clifty Falls State Park, Jefferson County. This 

 species is doubtless a native here because the location is more than a mile 

 from any habitation of consequence and it is not known to be in cultiva- 

 tion anvwhere in the vicinity 



S. C., Ind. to Tenn., southw. to Ga. and Tex. 



