HYPERICACEAE. 223 



Family 2. HYPERICACEAE Lindl. St. John's-wort Family. 



Sepals 4 in unequal pairs; petals 4. 

 Sepals and petals 5. 

 Petals yellpw. 



Leaves normal, not reduced to scales. 

 Leaves reduced to minute appressed scales. 

 Mowers pink or greenish-purple. 



1. ASCYRUM L. 

 Erect, 3-6 dm. high; styles 3 or 4. 1, A. stems. 



Diffusely branched, 1-2.5 dm. high; leaves sessile; styles 2. 



2. A. hypericoides. 



1. Aseyrum. 



2. Hypericum. 



3. Sarothra. 



4. Triadenum. 



1. ASCYRUM STANS Michx, 



mer. 

 Bucks— Bristol (Ca.). 

 New Jersey — Common in wet pine-barrens. 

 New Castle— Townsend, Tatnall and Gariby 



St. Peter 's-wort. M. p. 625. Dry soil. Sum- 



St. Andrew 's-cross. M. p. 625. Dry, sandy 



ASOYRUM HYPERICOIDES L. 



soil. Summer. 



Philadelphia— Wissahickon (Me.) (Ee.). Bucks— Bristol, Mart, (B. 

 C.)j Penn Valley (Wn.). Delaware— Media, Middletown (Fu.), Lewis' 

 Mills, Crum Creek (B. Sm.), Concord (W. Tr.). Chester— North Valley 

 Hill opposite Thorndale and Paoli (St.). Lancaster— Little Britain Twp. 

 (Pr.). 



New Jersey— Common in pine-barrens. 



New Castle— Frequent, 



2. HYPERICUM L. St. John's-wort. 



1. H. Ascyron. 



H. prolificum. 

 S. densiflorum. 



Styles 5 ; large perennials ; pods 5-celled. 

 Styles 3 (rarely 4). 



Tall, leafy shrubs; pods 3-celled. 

 . Flowers 12-16 mm. broad; pods 8-12 mm. long. 

 Flowers 8-12 mm. broad ; pods 4-6 mm. long. 

 Herbaceous, sometimes woody at the base. 



Stamens numerous (15-40); flowers 6-25 mm. broad. 

 Capsules 1-celled or incompletely 3-4-celled. 



Capsules incompletely 3-4-celled by the projecting pla- 

 centae. 4. H. adpressum. , 

 Capsules strictly 1-celled; placenta; parietal. 



Styles united into a beak, separate above ; stigmas 



minute. 5. H. ellipticum. 



Styles separate; stigmas capitate; cyme naked. 



6. E. virgatum. 

 Capsules completely 3-celled ; styles separate. 

 Leaves linear or oblong; sepals lanceolate. 

 • 7. H. perforatum. 



Leaves broadly oblong, oval, or ovate-lanceolate. 



8. H. maculatum. 

 Stamens few (5-12) ; flowers 1-6 mm. broad. 



Leaves obtuse; sepals linear-oblong, acutish or obtuse. 



9. H. mutilum. 

 Leaves acute, or only the lower obtuse; sepals long-acuminate. 



10. H. gymnanthim. 

 Leaves linear, obtuse, 3-nerved. 11. H. Canadense. 



