3164 



SILENE 



SILENE 



KEY TO THE SPECIES. 



A. Duration annual or biennial. 



B. Plants glabrous, although viscid 



above in No. 1. 



c. All except the lowest hs. ovate or 

 ovate-lanceolate from a subcor- 



date, clasping base 1. Armeria 



cc. All except the lowest Ivs. oblong or 

 oblong-lanceolate from a connate 



base 2. compacta 



BB. Plants pubescent or tomentose. 



c. Sts. simple 3. viscosa 



cc. Sts. dichotomously branched, at 

 least above. 



D. Fls. sessile, white 4. dichotoma 



DD. Fls. pedicelled, finally pendu- 

 lous, usually flesh-colored to 

 purple but white in one variety. 5. pendula 

 AA. Duration perennial. 



B. Height 1 ft. or more (Nos. 8, 12, 17, 

 and 18 are usually less than 1 ft.; 

 No. 9 is placed here with uncer- 

 tainty as its height is not definitely 

 stated). 

 c. Nerves of the calyx 20. 



D. Sts. erect: base of Ivs. cordate. . . 6. fimbriata 

 DD. Sts. procumbent or ascending: 



base of Ivs. narrowed. 

 E. Fls. several to a st.: sts. as- 

 cending 7. latifolia 



EE. Fls. 1 or few to a st.: sts. 



procumbent 8. maritima 



cc. Nerves of the calyx 10. 

 D. Plants glabrous. 



E. Lvs. linear-oblong 9. tatarica 



EE. Lvs. lanceolate-spatulate 10. Asterias 



DD. Plants pubescent or at least pu- 

 berulent or pruinose-scabrous. 

 E. The Ivs. in whorls of 4 (the 

 uppermost and lowest some- 

 times opposite) 11. stellata 



BE. The Ivs. not in whorls of 4- 

 F. Blades linear or narrowly 

 lanceolate or oblanceolate. 

 G. Sts. more or less decum- 

 bent or geniculate at the 

 base. 



H. Fls. solitary on the pe- 

 duncles 12. multicaulis 



HH. Fls. mostly in 8-fld. 



cymes. 



I. Calyx oblong or obo- 

 vate: fls. white or 



pink 13. Douglasii 



n. Calyx long-cylin- 

 drical, pink, green- 

 nerved: fls. bright 



carmine 14. laciniata 



GG. Sts. erect. 



H. Fls. erect 15. Fortunei 



HH. Fls. nodding 16. Scouleri 



.FF. Blades broader, usually 

 ovate or obovate, some- 

 times broadly lanceolate 

 or oblanceolate. 

 G. Sts. more or less decum- 

 bent or procumbent. 

 H. Infl. leafy and borne 

 in the forks of the 



branches 17. Menziesii 



HH. Infl. not leafy, usually 

 at least partly ter- 

 minal. 

 i. Petals obcordate: fls. 



rose 18. rosiflora 



ii. Petals 4-deft or 4~ 



lobed: fls. scarlet. .19. californica 

 GO. Sts. erect, usually stout. . 

 H. Fls. crimson or scarlet. 

 i. Lvs. thin, spatulate 

 or oblanceolate; 

 apex blunt or ab- 

 ruptly acute 20. virginica 



n. Lvs. thick, ovate-lan- 

 ceolate; apex acute 

 or acuminate . . . .21. regia 



HH. Fls. white, greenish 



white, or bright green. 



i. The fls. erect: Ivs. 



tomentose 22. gigantea 



II. The fls. nodding: Ivs. 

 pubescent but not 

 tomentose. 



j. Base of calyx gr ad- 

 ally attenuate 

 to the pedicel . .23. viridiflora 

 jj. Base of calyx trun- 

 cate and umbili- 



cate 24. mellifera 



BB. Height 2-10 in. (Nos. 8, 12, and 18 

 occasionally reach 1 ft.; No. 17 is 

 often 1 ft. or more high; No. 9 may 

 belong here but is probably taller 

 than 1 ft.). 

 c. Nerves of the calyx 20. 



D. Plant not cespitose 25. Zawadskii 



DD. Plant cespitose. 



E. Lvs. linear: plant dwarf, 2-4 



in. high 26. pumilio 



EE. Lvs. lanceolate or ovate-lance- 

 olate: plant 8-16 in. high. . 8. maritima 

 cc. Nerves of the calyx 10. 



D. Blades linear or narrowly lan- 

 ceolate (the lowest Ivs. of No. 

 SO are somewhat spatulate, 

 the others linear). 

 E. Species strictly glabrous. 



F. Peduncles 5-11-fld 27. Lerchenfeldi- 



FF. Peduncles 1-, rarely 2-fl.d.. [ana 



G. Sts. lacking or almost so: 

 plants not more than 2 



in. high 28. acaulis 



GG. Sts. present: plants 4-6 



in. high 29. dianthif olia 



EE. Species more or less pubescent 



or at least viscid above. 

 F. Petals 4-lobed. 



G. Fls. solitary or in 3's. . .30. quadrifida 

 GG. Fls. in panicles. 



H. Color of fls. white 31. alpestris 



HH. Color of fls. cardinal- 

 red 14. laciniata var. 



FF. Petals 2-lobed or 2-cleft. [Purpusii 



G. Calyx glabrous. 



H. Claws of the petals 

 dilated and glabrous; 

 calyx-teeth alternate- 

 ly oblong, obtuse and 

 lanceolate, acute. ... 12. multicaulis 

 HH. Claws of the petals cili- 

 ate; calyx-teeth ovate, 



obtuse 32. Saiifraga 



GG. Calyx pubescent. 



H. Tube of calyx cam- 



panulate 33. odontopetala 



HH. Tube of calyx clavate 

 or tubular becoming 

 oval. 



i. Fls. rose 34. Elizabeth 



n. Fls. white. 



j. Infl. cymose, few- 

 fid 35. ciliata 



jj. Infl. racemose- 

 paniculate. 



K. Fls. erect 36. repens 



KK. Fls. nodding. ..37. Reichen- 

 DD. Blades broader, when lanceolate, [bachii 



relatively broad as compared 

 with the length. 



E. Plant glabrous 38. rupestris 



EE. Plant pubescent or at least 



velvety. 



F. Lvs. lanceolate, oblong-lan- 

 ceolate, or ovate-lanceolate, 

 blade broadest at or below 

 the middle. 

 a. Fls. white. 



H. Infl. leafy, borne in 

 the forks of the 



branches 17. Menziesii 



HH. Infl. terminal on a st. 

 ascending from be- 

 low the rosette 39. caucasica 



