SEDUM 



SEDUM 



1637 



Section I. Herbaceous Perennials, i. e., plants that 

 die down to the root during winter. (In greenhouse 

 culture some become evergreen.) 



A. Flowers unisexual 1. roseum 



AA. Flowers bisexual. 

 B. Lvs. narrow. 



c. Arrangement of lvs. oppo- 

 site 2. Asiaticum 



cc. Arrangement of lvs. alter- 

 nate. 



D. Height about 4 in 3. MiddendorKianum 



DD. Height 12 in. or more. 

 E. Stems glabrous. 



F. tie pals equal 4. Aizoon 



FP. Sepals unequal .. . 5. Maximowiczii 



EE. Stems pilose 6. Selskyanum 



BB. Lvs. broad: roots tuberous. 

 c. Arrangement of lvs. scat- 

 tered (ravel !i opposite in 

 S. Teh'phium). 

 D. Margin of lvs. dentate. 7. Telephium 

 DD. Margin of lvs. nearly 



entire 8. telephoides 



cc. Arrangement of lvs. oppo- 

 site {sometimes in 3's 

 in S. spectabile) . 

 D. Buds obovoid, abruptly 



pointed 9. maximum 



DD. Buds long and pointed. IQ. spectabile 



Section II. Evergreen Perennials. Foliage does not 

 die during the tvinter. 

 A. Foliage flat, broad and rela- 

 tively thin: lvs. spatulate or 

 wider. 

 B. Lvs. in tufts or rosettes (at 

 least those of the barren 

 shoots). 

 c. Fls. yellotv: anthers yel- 

 low. 

 D. Each fl. 14. in. across. .11. spathulifolium 

 DD. Fach fl. % in. across. .VI. obtusatum 

 cc. Fls. white; anthers red- 

 dish. 

 D. Barren shoots with lvs. 



in 3's 13. tematum 



DD. Barren shoots ivith 



scattered lvs 14. Nevii 



BB. Lvs. scattered, i.e., not tufted. 

 c. Stem erect: fls. whitish or 



pinkish 15. populifolium 



■ cc. Stems (barren ones) pros- 

 trate. 

 I). Fls. yellow. 



E. Margin of lvs. 

 coarsely toothed 

 above the middle. 

 F. Petals lanceolate.. \G. Kamtschaticum 



FF. Petals linear 17. hybridum 



EE. Margin of lvs. entire.li. Japonicum 

 DD. Fls. pink, rose or 

 ivhite. 

 E. Arrangement of lvs. 

 opposite. 

 F. Base of lvs. nar- 



roived 19. stoloniferum 



20. oppositifolium 

 FF. Base of lvs. cor- 

 date 21. Ewersii 



EE. Arrangement of lvs. 



alternate 22. Anacampseros 



EEE. Ai-rangement of lvs. 



inS's 23. Sieboldii 



AA. Foliage more or less terete: 

 lvs. usually linear, not wider 

 than lanceolate (unless in 

 No. 28). 

 B. Apex of lvs. sharply pointed. 

 C. Fls. yelloiv. 



D. Inflorescence decurved.24. reflexum 

 DD. Inflorescence not de- 

 curved, 

 E. Cymes scorpioid 25. stenopetalum 



EE. Cymes umbellate 20. sarmentosum 



cc. Fls. lilac or white 27. pulchellum 



BE. Aj)ex of lvs. blunt. 

 c. Fls. yellotv. 



D. Lvs. ovoid^ bitter 28. acre 



DD. Lvs. oblong, tasteless . .29. sezangulare 

 cc. Fls. white or pink. 



D. Plants usually glau- 

 cous. 



E. Anthers black 30. dasyphyllum 



EE. Anthers pxirple 31. Hispanicum 



EEE. Anthers pink 32. brevifolium 



DD. Plants not glaucous. 

 E. Fls. pinkish : buds 



5-angled 33. Lydium 



EE. Fls. white: buds ob- 

 long 34. album 



EEE. Fls. white: btids 



roundish 35. Monregalense 



Section III. Annuals or Biennials. These die after 

 flowering and fruitivg. Annuals flower the first year, 

 biennials the second. 



A. Lvs. flat, not cylindrical. 



B. Fls. scarlet 3G. sempervivoides 



BB. Fls. yellow 37. Formosanum 



AA. Lvs. more or less cylindrical. 



B. Fls. blue 38. cseruleum 



BB. Fls. dull rose or white 39. viUosum 



Section I. Herbaceous Perennials (Species 1-10). 



1. rdseum, Scop. (S. Rhodlola, DC). Rootstock 

 thick, fleshy, exhaling a perfume of rose water: height 

 6-8 in. : lvs. scattered, oblong, 1 x M in. : fls. greenish or 

 reddish purple, in a terminal flat-topped cyme about 

 1 in. across; petals 4; stamens 4 in the male fl., absent 

 in the female; carpels in the female fl. 4. Summer. 

 Eu., N. Amer., Himalayas. — The only species here de- 

 scribed that has unisexual flowers. A neat-growing 

 plant suitable for rockeries or the front row of borders. 



2. Asidticum, Spreng. Height G-12 in. : lvs. opposite, 

 linear, coarsely and irregularly toothed: fls. greenish 

 yellow, in compact, globose cymes, floral parts in 5's. 

 Summer. Himalayas. — Cultivated abroad and possibly 

 in America. Its almost pinnatifld foliage makes it very 

 distinct. In India it is said to have red flowers. It 

 seems to suffer from the wetness of an ordinary border 

 in winter, and should probably be wintered under glass. 



3. Middendorffi^num, Maxim. Lvs. alternate, ob- 

 lanceolate, dentate toward apex: fls. yellow, in a flat- 

 topped cyme. Summer. Amurland.— According to J. W. 

 Manning, it grows 4 in. high, and has deep green foli- 

 age which becomes a rich purple in winter. Woolson 

 says it is densely tufted. 



4. Aizdon, Linn. Height 1ft. or more, usually lJ^-2 ft. : 

 lvs. alternate, oblong-lanceolate, coarsely and irregularly 

 toothed for the greater part of their length, 23^ x % in. : 

 fls. yellow, 3^ in. across, in a loose, panicled cyme 1-3 in. 

 across. Late summer. Siberia. — An old garden favorite, 

 suitable for the hardy border and for rockeries. 



5. Maximowiczii, Regel. Height 1 ft.: lvs. suboppo- 

 site or alternate, oblong-ovate or oblong-lanceolate, 

 regularly toothed: fls. yellow, in a dense, flat cyme. 

 July, Aug. Japan, Amurland. Gn. 19, p. 203; 27, p. 316. 

 — By some this is considered a variety of S. Aizoon. 

 It is similar to S. Aizoon in habit but larger, differing 

 in the sepals of unequal length and in the peculiar 

 flask-shaped fl.-buds, which are dilated below and nar- 

 rowed into a long beak above. Desirable for borders ; 

 also used for carpet beds. Seeds, as well as plants, are 

 offered. 



6. Selskitoum, Regel. Also spelled Selskyanum. 

 Height 12-18 in. : lvs. alternate { ?), serrate in the distal 

 third : fls. yellow, nearly 1 in. across, in a hollow-topped, 

 leafy cyme. Late summer. Amur., Manchuria.— Re- 

 sembles S. Aizoon but has narrower and pilose leaves. 

 Offered in 1893 by John Saul. 



7. Telephium, Linn. Orpine. Live-forevek, Fig. 

 2282. Height 12-18 in. : lvs. scattered, rarely opposite, 

 oblong-ovate, obtuse, dentate : fls. pink, spotted red, or 



