3126 



SEDUM 



SEDUM 



KEY TO THE SPECIES. 



A. Lvs. terete or subterete (that is, relatively 



thick as compared to breadth). 

 B. Fls. yellow (except a white-fld. variety 



of No. 1). 



c. Lf. -blades broad as compared to 

 length. 



D. Petals without a dorsal awn 1. acre 



DD. Petals with a short dorsal awn.. 2. Stahlii 

 cc. Lf. -blades narrow as compared to 



length (usually linear). 

 D. Apex of Ivs. blunt. 



E. The Ivs. papillose-pilose 3. multiceps 



EE. The Ivs. glabrous 4. sexangulare 



DD. Apex of Ivs. acute or acuminate. 

 E. Base of Ivs. membranaceous 

 and dilated, abruptly ta- 

 pered to a much narrower 



upper part 5. tenuifolium 



EE. Base of Ivs. not distinctly di- 

 lated, not abruptly tapered 

 to a much narrower upper 

 part. 

 P. Petals acute or acuminate. 



G. Sepals subulate 6. stenopetalum 



GG. Sepals ovate-lanceolate. 



H. Apex of sepals acutish. 7. sarmentosum 

 HH. Apex of sepals blunt. . 8. Forsterianum 

 FF. Petals blunt. 



G. The Ivs. incurved, those 

 of the barren shoots 

 forming dense conical 



rosettes 9. rupestre 



GG. The Ivs. re flexed, those of 

 the barren shoots not 

 forming such marked 



rosettes 10. reflexum 



BB. F Is. white, pink, or purplish. 



c. Lf. -blades broad as compared to 

 length. 



D. Sepals ovate 11. anglicum 



DD. Sepals oblong or linear to linear- 

 lanceolate. 



E. Petals oblong and blunt. 

 F. Color of fls. blue (sometimes 



rosy lilac) 12. caeruleum 



FF. Color of fls. white with the 



midrib of the petals pink.13. brevifolium 

 BE. Petals lanceolate and acute. 



F. Plant farinose-pruinose ... 14. f arinosum 

 FF. Plant not farinose-pruinose 

 though often more or less 

 glaucous. 



G. Sts. much branched at the 

 base: branches diffuse: 

 fls. less than %in. 



across 15. dasyphyllum 



GG. Sts . rather simple: 

 branches short and not 

 diffuse: fls. nearly 



%in. across 16. potosinum 



cc. Lf.-blades narrow as compared to 



length. 



D. Petals relatively rather broad, 

 their base somewhat narrowed. 

 E. The Ivs. oblong or oblanceolate- 



oblong 17. pilosum 



EE. The Ivs. linear. 



F. Sts. viscid-pilose above: 



sepals ovate 18. villosum 



FF. Sts. not viscid-pilose though 

 somewhat glandular-pi- 

 lose above: sepals deltoid.. 19. hispanicum 

 DD. Petals relatively narrow, usually 



lanceolate, their base broad. 

 E. Barren shoots lacking 20. arboreum 



EE. Barren shoots present. 



F. Sepals lanceolate, relatively 



narrow 21. pulchellam 



FF. Sepals deltoid, ovate, oblong 

 or elliptic, relatively broad. 



G. Infl. glandular 22. monregalense 



GG. Infl. not glandular. 



H. The infl. rather openly 



racemose-cymose. . . .23. Alberti 

 HH. The infl. more or less 

 densely corymbose- 

 cymose. 

 I. Buds 5-angled: fls. 



pinkish 24. lydium 



n. Buds nearly terete, 



oblong: fls. white . 25. album 

 AA. Lvs. flat (that is, relatively thin as com- 

 pared to breadth). 

 B. Fls. unisexual (dioecious). 



c. Color of fls. yellow 26. Kirilowii 



cc. Color of fls. greenish or reddish 



purple 27. roseum 



BB. Fls. bisexual (hermaphrodite). 



C. The fls. yellow or greenish yellow, 

 one species orange-yellow (fls. of 

 No. 30 become pink with age). 

 D. The Ivs. commonly not twice as 

 long as broad (in No. 29 just 

 about half as broad as long) . 



E. Sepals ovate 28. dendroideum 



EE. Sepals linear to lanceolate. 



F. Margin of Ivs. dentate above.29. Woodwardii 

 FF. Margins of Ivs. entire. 



G. Petals united below 30. oreganum 



GG. Petals not united below. 



H. Apex of Ivs. rounded [folium 



or retuse 31. spathuli- 



HH. Apex of Ivs. apiculate.32. Palmer i 

 DD. The Ivs. commonly much 'more 

 than twice as long as broad 

 (some specimens of No. 1$ 

 have the Ivs. only twice as broad 

 as long). 

 E. Margin of hs. entire. 



F. Lvs. in rosettes, at least 



those of the barren shoots.33. obtusatum 

 FF. Lvs. scattered. 



G. Petals oblong , boat- 

 shaped 34. nicaeense 



GG. Petals lanceolate. 



H. Sepals spatulate 35. formosanum 



HH. Sepals oblong 36. japonicum 



EE. Margin of Ivs. dentate or ser- 

 rate. 



F. Plant spreading-pilose 37 Selskianum 



FF. Plant glabrous (sometimes 



glandular in No. 39). 

 G. The sepals linear or 



linear-oblong. 

 H. Outline of petals fusi- 

 form with the base 

 slightly broadened 

 and the apex long- [dorffianum 



acuminate 38. Midden- 



HH. Outline of petals lance- 

 olate, apex acumi- 

 nate 39. hybridum 



GG. The sepals lanceolate or 

 oblong-lanceolate. 



H. Petals oblong 40. asiaticum 



HH. Petals lanceolate. 



i. Buds flask-shaped. .41. Maximowiczii 

 II. Buds conical. 



j. Lvs. oblong-ovate: 

 plant about 6-8 



in. high 42. kamtschati- 



jj. Lvs. oblong-lance- [cum 



olate: plant usu- 

 ally lYy-2 ft. 



high 43. Aizoon 



cc. The fls. white, pink, red, violet, or 



purple. . . 

 D. Lf.-blades %-l in. or more broad 



in the widest place. 



E. Plants pubescent or puberulent. [voides 



F. Margin of If. entire 44. sempervi- 



