HYPERICACE.E. (ST. JOHN's-WORT FAMILY.) 93 



Pod 1 -celled or 3 - 5-celled. Seeds usually cylindrical. Herbs or shrubs, with 

 cymose yellow flowers. (An ancient Greek name, of obscure meaning.) 



1. Stamens very numerous, 5-adelphous ; styles 5, united below, the stigmas 

 capitate; pod 5-celled, the placentae turned far back into the cells; peren- 

 nial herb ; flowers very large. 



1. H. Ascyron, L. (GREAT ST. JOHX'S-WORT.) Stems 2-5 high; 

 branches 2 - 4-angled ; leaves (2 - 5' long) ovate-oblong, partly clasping ; petals 

 narrowly obovate (!' long), not deciduous until after they wither ; pod f ' long, 

 conical. (H. pyramidatum, Ait.) Banks of rivers, New Eng. and Penn. to 

 Iowa and Minn. July. 



2. Stamens very numerous, obscurely if at all clustered; styles 3 (n. 2 ex- 

 cepted), more or less united into one, the stir/mas not capitate except in n. 10; 

 sepals mostly foliaceous. 



* Bushy shrubs, 1-6 high, leafy to the top. 

 *- Styles 5 ; pod completely 5-celled. 



2. H. Kalmianum, L. (KALM'S ST. JOHX'S-WORT.) Branches 4- 

 angled ; branchlets 2-edged ; leaves crowded, glaucous, linear to oblanceolate 

 (1-2' long); flowers few in a cluster (!' wide) ; pods ovate. Wet rocks, 

 Niagara Falls and northern lakes. Aug. 



H- -H- Styles 3 ; pod completely 3-celled. 



3. H. prolificum, L. (Snitrnm- ST. JOHN'S-WORT.) Branchlets 2- 

 edged; leaves narrowly oblong (1-2' long), mostly obtuse, narrowed at the 

 base ; flowers numerous, in single or compound clusters ; pods lanceolate to 

 ovate, 4-6" long. N. J. to Mich., Minn., and southward. July-Sept. 

 Varies greatly in size, etc. 



4. H. densifl6rum, Pursh. Exceedingly branched above, 1 - 6 high, 

 the branches slender and crowded with smaller leaves; flowers smaller (-' 

 in diameter) and more numerous, in crowded compound cymes; pod 2-3" 

 long. (H. prolificum, var. donsiflorum, Gray.) Pine barrens of N. J. to 

 glades of Ky., Ark., and southward. 



* * Perennial herbs or a little woody at the base. 

 t- Pod incompletely 3 - ^-celled. 



5. H. galioides, Lam. Slender, branching, woody below ; leaves linear- 

 oblanceolate, narrowed downward, J 8' long, mostly acute; flowers small in 



.(terminal and axillary cymes; sepals very narrow, 1^-3" long; pod as long, 

 ovate. Del. to Ga. and E. Tom. 



6. H. adpressum, 1 '.art on. Stem simple, herbaceous, from a slightly 

 woody creeping base (1 - 2 high), obscurely 4-augled below and 2-edged above ; 

 /. ures ascending, lanceolate or linear-oblong, often acute, thin ; cyme terminal, 

 leafy at the base, few-flowered ; sepals linear-lanceolate , pods ovoid-oblong. 

 Moist places, Nantucket and R. I. to Penn., and southwestward. July -Aug. 

 Leaves 1^' long. Petals bright yellow, 3 - 5" long. 



f- H- Pod l-celled with 3 parietal placenta?. 



7. H. dolabriforme, Vent. Stems branched from the decumbent base, 

 woody below (6 - 20' high), terete ; leaves linear-lanceolate, widely spreading, 



