82 BOTANICAL GAZETTE. [ April, 
Fl. i. 157; Gray, Gen. Ill. i. 213, t. 92,93; Benth. & Hook. 
thys, Brathydium, Myriandra, Roseyna, and Isophyllum of Spach, 
Ann. Sci. Nat. 2. v. 367.—A genus of about 160 species, widely 
distributed, but chiefly of northern temperate regions; all but 
three of the 29 North American species restricted to the Atlantic 
Es . 
H. setosum L. Spec. 787, with the character only “floribus digynis, foliis 
linearibus,” represents no plant known to Linneus, but is a complex wholl 
founded on a phrase of Gronoy. Fl. Virg., which belongs to H. pilosum Walt., 
and to one of Pluk. Alm., which is H. nudicaule Walt., whence the “digynis” 
and the suggestion of the specific name. 
H. elatwm Ait. Hort. Kew. iii. 104, proves to be H. hircinum L., or some 
nearly related Old World species. 
. triplinerve Vent. Hort. Cels. t. 58, must also be an Old World species, 
related to H. hyssopifolium L. 
21. Sepals and petals 4, or occasionally 5: stamens numerous, distinct 
styles 3, at first united into a long sharp beak, becoming distinct: capsule 1- 
celled, the placentx projecting : branching shrubs.—Isophyllum Spach. 
1. H. microsepalum Gray. Decumbent or erect, half to a 
foot high or more: leaves very small, oblong-linear, 3 or 4 lines 
long, hardly a line wide, obtuse: flowers showy, about an inch in 
diameter, clustered at the summit of the branches: sepals slightly 
unequal, linear to oblong, mostly obtuse, much shorter than the 
somewhat unequal petals: capsule oblong-ovate, 2 to 3 lines long ; 
seeds oblong, minutely striate and fitted—Watson, Bibl. Index, 
Polypet. 456. 
Isophyllum Drummondii Spach, Ann. Sci. Nat. 2. v. 367. 
seyrum microsepalum Torr. & Gray, Fl. i. 157; Gray, Gen. Il. i. 212; 
Chapm. FI. 39. 
Georgia and Florida. 
This species is intermediate between Ascyrum and Hypericum, and Spach 
separated it from both by founding the genus Isophyllum. The habit, small 
and nearly equal sepals, and long beak-like styles, all belong to Hypericum, 
while the 4-merous flower associates it with Aseyrum. As the flowers are also 
sometimes 5-merous it seems most proper to consider it an outlying species of 
ypericum. ‘ 
22. Stamens very numerous, distinct, or more or less united into sets. 
* Styles 5, united below, distinct above; stigmas capitate: capsule 5-celled, 
the placente turned far back from the axis: tall perennial herbs with large 
Jeaves and flowers. 
