572 



HYPERICACEAE (ST. JOHN'S- WORT FAMILY) 



ff. puncUilum. 



H. pseudomaculatum. 



ff. adprfg*um. 

 ff. ellipticum. 



a. Petals yellow (at most mottled or striped with red, purple, or black) b. 

 b. Styles 5; pods 5-celled. 



Tall herb ; flowers 4-6 cm. broad ; pods 2-3 cm. long . . 1. II. Aacyron. 

 Slender shrub; flowers 1.5-3 cm. broad; pods 5-10 mm. long 8. ff. Kalmianum. 

 b. Styles 8, rarely 4 ; pods 3(rarely 4)-celled c. 

 c. Stamens very numerous (more than 12) d. 

 d. Shrubs, 0.5-2 in. high. 



Pods 1-1. 5 cm. long ........ 6. 17. prolificum. 



Pods 5-8 mm. long ........ 7. H. dtnt'ijlorum. 



d. Herbs, at most slightly woody at base . 



t. Stamens In 3-5 clusters ; petals marked with black dots 



or lines /. 

 f. Petals bearing black dots only on the margin. 



Flowers and leaves few, the latter 1.5-3 cm. broad . 2. H. graveolens. 

 Flowers and leaves very numerous, the latter rarely 



1 cm. broad ........ 8. ff. per/oratum. 



f. Petals bearing several rows of black dots or lines. 



Leaves rounded at tip ; sepals blunt or acutish ; pods 

 4-6 mm. long . ^ ....... 4 



Leaves (at. least the upper) narrowed to the tip ; sepals 



acuminate ; pods 6-S mm. long .... 5. 



e. Stamens obscurely if at all clustered ; petals without black 

 dots g. 



g. Stems herbaceous, from slender creeping freely stolonif- 

 . erous bases. 



Leaves and linear-lanceolate acute firm sepals with 

 revolute margins ....... 10 



Leaves and oblanceolate or obovate thin foliaceous 

 sepals plane ........ 14 



g. Stems woody at base, or if herbaceous without slender 



stolons A. 



A. Steins freely branching, woody at base ; cymes leafy- 



bracted ; styles united below ; stigmas elongate i. 



i. Capsule thick-ovoid to subglobose, somewhat 3- 



angled, essentially 1-celled. 

 Sepals 6-13 mm. long ; corolla 1.5-2 era. broad. 



Sepals 6-10 mm. long, 2-5 mm. broad . . 11. ff. dolabrrformt. 

 Sepals variable, the larger 1-1.3 cm. long, 6-8 



mm. wide ....... 12. 



Sepals 3-5 mm. long; corolla 1-1.5 cm. broad . 13. 

 i. Capsule conic-subulate, distinctly 3-celled . 9. 



A. Stems simple below the loosely " forking essentially 

 naked inflorescence, herbaceous ; styles distinct ; 

 stigmas capitate ....... 15. ff. rirgafum. 



e. Stamens 5-12 j. 

 j. Stem simple or loosely branched ; leaves linear to ovate, 



spreading *. 

 k. Bracts of the inflorescence foliaceous, resembling reduced 



stem-leaves ......... 16. E. boreale. 



k. Ultimate bracts of the inflorescence setaceous to linear- 



subulate. 

 Leaves orbicular, ovate-deltoid, or rounded-oblong, 



clasping. 

 Leaves ovate-oblong or short-elliptic, rounded at tip ; 



pod short-ellipsoid ....... 17. 



Leaves ovate-deltoid, acutish or blunt ; pod slender- 

 conical ......... 18. 



Leaves lanceolate to linear, merely sessile (if clasping 



with lance-attenuate outline). 

 Leaves lanceolate, chiefly 5-7-nerved at base . . 19. H. majus. 

 Leaves linear. 1-3-nerved ...... 20. H. canadente. 



j. Stems fastigiately branched ; leaves scale-like or linear- 



subulate, strongly ascending. 

 Leaves 6-20 mm. long; pods ovoid, slightly exceeding the 



calyx .......... 21. H. Drummondii. 



Leaves shorter, scale-like; pods lance-subulate, much 



exceeding the calyx ....... 22. H. gentianoides. 



a. Petals flesh-color or purplish. 



Leaves sessile or clasping . .. ...... 28. ff. rirginictim. 



Leaves narrowed to distinct petioles ...... 24. ff. petiolatum. 



1. R6SCYNA (Spach) Endl. Stamens very numerous, 5-adelphoiis ; ttylee 

 5, united below, the stigmas capitate ; pod o-celled, the placentw turned far 

 back into the cells; perennial herb ; flowers very larye. 



1. H. Ascyron L. (GREAT S.) Stems 5-15 dm. high ; branches 2-4-angled ; 

 leaves 4-9 cm. long, ovate-oblong, partly clasping ; petals narrowly obovate, 2. 5 



ff. BUneliii. 

 //. ci*ti folium. 

 H. galioides. 



ff. mutilum. 



ff. gymnanthum. 



