572 



HYPEK1CACEAE (ST. JOH1TS-WORT FAMILY) 



II. 



II. /a ri'oi iitnni 



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

 b. Stvles 5; pods 5-celled. 



Tall herb; flowers 4-6 cm. broad ; pods 2-3 cm. long . . 1. 77. Ascyron. 

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

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

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

 <!. Shrubs, 0.5-2 in. high. 



Pods 1-1.5 cm. long f>. //. i>rol(Jicum. 



Pods 5-8 mm. long 7. 77. 



</. Herbs, at most slightly v oody at base e. 



e. Stamens in 8-5 clusters; petals marked with black dots 



or lines /. 

 /. Petals bearing black dots only on the margin. 



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

 Flowers and leaves very numerous, the latter rarely 



1 cm. broad . . '!. 



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



Leaves rounded at tip ; sepals blunt or acutish ; pod- 



4-6 mm. long 4. 



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



acuminate ; pods 6-8 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 sepalg with 



re volute margins 10. 77. 



Leaves and oblanceolate or obovate thin foliaceous 



sepals plane 14. U. ellipticum. 



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



stolons h. 



h. Stems freely branching, woody at base ; cymes leafy - 



bracted ; styles united below ; stigmas elongate /. 



i. Capsule thick-ovoid to subglobose, somewhat 8- 



angled, essentially 1-celled. 

 Sepals 6-18 mm. long ; corolla 1.5-2 cm. broad. 



Sepals 6-10 mm. long, 2-5 mm. broad . . 11. H. dolabrifor-mt. 

 Sepals variable, the larger 1-1.8 cm. long, 6-8 



mm. wide 12. 77. BiHtfllii. 



Sepals 8-5 mm. long; corolla 1-1.5 cm. broad . lo. //. 

 *. Capsule conic-subulate, distinctly 3-celled . . 9. 77. 

 h. Stems simple below the loosely forking essentially 

 naked inflorescence, herbaceous: >tyle> distinct ; 

 stigmas capitate . . . . . . . 15. H. virgatum. 



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. 77. 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, nierelv sessile (if clasping 



with Lanoe-attenuate outline). 

 Leaves lanceolate, ehietly f>-7-nervcd at base . . 19. 



Leaves linear. 1-3-nervcd -_'u. 



j. Steins fastigiately 1. ranched ; leaves scale-like or linear- 

 subulate. Strongly ascending. 

 Leaves 6-20 nun. long: pods ovoid, slightly exceeding the 



calyx 21. 



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



exceeding the calyx 22. 



<t. Petals flesh-color or purplish. 



Leaves M-ssile or clasping 



Leaves narrowed to distinct petioles 21. 



H. 

 II. 



II. in a jus. 

 //. eanadt //.sv. 



i>iil ii. 



II. ;/, /ititl,, 



II. 



II. in t in/tit mil. 



1. R6SCTNA (Spach) Endl. Stamens very Hnmrrniis, '^itil^hniia; ntyli>* 

 :,. united hifmr. tin- nthjinmt capitate; p<><! '>-<</!<'</. /// t ,l,i,;-uitn- htrm -//"/ 



!></, info flu- rr//.s ; jx'i'ftniitil ht'rh ; .rloin-rx ft rij lnr<j<-. 



1. H. Ascyron L. ((IKKAT S.) Stems 5-15 dm. lii-h : liranchcs 

 k-avcs -I-J) cm. long, ovate-olilimir, partly clasping ; petals narrowly obovate. 



