1630 



HYPERICUM 



HYPERICUM 



D. Lvs. ovate to ovate-lanceolate: 

 fls. 1-8 in. across; stamens 

 in 5 fascicles. 



E. Height 1 ft. or less, suffruti- 

 cose, stoloniferous: fls. 



solitary 2. calycinum 



EE. Height 1-6 ft., shrubby. 



F. Styles twice as long as 



ovary: branchlets terete. 



G. Sepals unequal; styles 



distinct 3. cernuum 



GG. Sepals nearly equal; 

 styles connate nearly 



to the apex 4. chinense 



FF. Styles as long or shorter 

 than ovary. 



G. Branches terete 5. Hookerianum 



GG. Branches 2-edged. 



H. Calyx with subor- 

 bicular nearly equal 



sepals 6. patulum 



HH. Calyx with oval to 

 oblong, unequal 



sepals 7. Moserianum 



DD. Lvs. linear-oblong to lanceolate: 

 fls. Yy-l in. across; stamens 

 all distinct. 

 E. Cymes many-fid.; fls. Ys-% 



in. across 8. lobocarpum 



EE. Cymes few-fld.; fls. Y^-l in. 



across 9. Kalmianum 



BB. Number of styles 3. 

 c. Fr. a caps. 



D. Stamens and styles shorter than 

 petals; styled more or less 

 united; stamens all distinct. 

 E. Growth shrubby. 



F. Lf. -blades narrowly ob- 

 long to linear. 

 G. Cymes forming a ter- 

 minal corymb. 

 H. Lvs. sessile: caps, in- 

 completely 3-celled..lO. glomeratum 

 HH. Lvs. short-petioled: 

 caps, completely 3- 



celled 11. densiflorum 



GG. Cymes axillary, form- 

 ing a narrow elonga- 

 ted panicle. 

 H. Fls. %in. across: Ivs. 



narrowly linear. . . . 12. galioides 

 HH. Fls. Yz-1 in. across: 

 Ivs. narrowly ob- 

 long 13. prolificum 



FF. Lf. -blades ovate to oblong. 

 G. Caps, incompletely 3- 



celled: height 1-4 ft. 

 H. Size of fls. 1-2 in.: 



Ivs. short-petioled... 14. aureum 

 HH. Size of fls. Yi~%in.: 



Ivs. sessile 15. nudiflorum 



OG. Caps. completely 3- 

 celled: height 1 ft. or 



less 16. Buckleii 



EE. Growth herbaceous or suffru- 



ticose. 

 F. Sts. %-edged: caps, ovoid, 



incompletely 3-celled. ... 17. adpressum 

 FF. Sts. 4-angled: caps, subglo- 



bose, 1-celled 18. cistifolium 



DD. Stamens about as long as petals; 

 styles distinct; stamens in 

 3-6 fascicles. 

 E. Plant herbaceous: fls. Y^-l 



in. across 19. perf oratum 



EE. Plant shrubby: fls. 1-2 in. 

 across. 



F. Branches terete 20. floribundum 



FF. Branches 2-edged. 



G. Fls. solitary or 3: odor 



of plant goat-like 21. hircinum 



GG. Fls. in 3-7-fld. cymes... . 22. elatum 

 cc. Fr. a black berry: styles distinct, 



. short 23. Androsaemum 



AA. Fls. pink or purplish; stamens mostly 9, 



in 3 fascicles 24. virginicum 



Section ROSCYNA. 



1. Ascyron, Linn. (H. pyramidatum, Dry.). Upright 

 perennial, 2-6 ft. high, with tetragonal sts. : Ivs. clasping, 

 ovate-oblong or ovate-lanceolate, acutish, 2-5 in. long: 

 cymes terminal, 3-12-fld., appearing in July; fls. 1-2 ^ 

 in. diam.; sepals ovate to ovate-oblong, unequal; 

 petals thin, narrowly obovate or oblanceolate, curiously 

 shaped and twisted, persistent until withered; stamens 

 in 5 clusters; styles somewhat spreading; stigmas 

 capitate: caps, ovoid, %in. long. N. E. N. Amer., 

 Cent, and E. Asia. B.B. (ed. 2) 2:529. A somewhat 

 coarse plant and toward fall apt to be unsightly through 

 the lower Ivs. dying and remaining. Var. Vilmorinii, 

 Rehd. Fls. 3-4 in. across. Recently raised by M. L. de 

 Vilmorin from seeds obtained from Korea. B.M. 8557. 



Section EREMANTHE. 



2. calycinum, Linn. ROSE OF SHARON. AARON'S 

 BEARD. Fig. 1940. A subshrub, 1 ft. or less high, with 



many procum- 

 bent or ascend- 

 ing 4-angled sts. 

 occurring in 

 thick tufts: Ivs. 

 ovate-oblong or 

 oblong, obtuse, 

 evergreen, sub- 

 coriaceous, dark 

 green, glaucous 

 below, 2-4 in. 

 long: fls. large, 

 solitary, or 2-3 

 together, 3 in. 

 diam.; sepals 

 large, obovate, 

 spreading; stamens long and 

 showy, in 5 clusters, with red 

 anthers; styles shorter than 

 the stamens, divergent: caps, 

 ovate, 4 in. long. July-Sept. 

 B.M. 146. G. 25:333. G.W. 

 1, p. 197. A rapidly spread- 

 ing plant, creeping by woody 

 rootstalks completely cover- 

 ing the soil. Used as a 

 ground -cover abroad. Not 

 very hardy in New England, the annual killing back 

 preventing its covering wide stretches, but not destroy- 

 ing its bloom each year, nor its usefulness in the her- 

 baceous border, or in the margin of a shrubbery. May 

 be protected, and its dark, persistent foliage preserved. 

 Thrives in sun and moderate shade. 



3. cernuum, Rpxbg. (H. oblongifolium, Choisy). 

 Shrub, to 5 ft., with terete branches: Ivs. sessile, nar- 

 rowly elliptic to ovate-lanceolate, acutish, narrowed 

 at the base, glaucous beneath, 1-3 in. long: fls. pale 

 yellow, nearly white when opening, 2 in. across, long- 

 stalked, nodding, solitary or in cymes of 3-5; sepals 

 acute; petals obovate; stamens little shorter than 

 petals. Himalayas. Cult, hi Calif. 



Section NORYSCA. 



4. chinense, Linn. (H. monogyrium, Willd.). Half- 

 evergreen shrub to 2 ft., with terete branchlets: Ivs. 

 sessile, oblong, obtuse, 1^-3 in. long: fls. about 2 in. 

 across; sepals ovate-oblong, obtuse; petals broadly 

 obovate; stamens little shorter than petals; style 

 slender, about %in. long, 5-parted at the apex. China. 

 B.M. 334. G.C. III. 1:705. Tender. 



5. Hookerianum, Wight & Arn. (H. oblongifdlium, 

 Hook., not Choisy). A rather compact shrub, to 6 ft., 

 with terete bright reddish brown branches: Ivs. among 

 the largest of the genus, 1-4 in. long, evergreen, ovate 

 or oblong, sessile, dark blue-green above, pale and glau- 

 cous below: corymbs several-fld., of large golden yellow 



1940. Hypericum calycinum. 



