SECTION I. HERBACEOUS PERENNIALS, i. e., plants that 

 die down to the root during wint>-r. (In greenhouse 

 culture some become evergreen.) 



A. flowers unisexual 1 . roseum 



AA. Flower* bisexual. 

 B. Lvs. nil I'rnir. 



C. A rranijfment of Ivs. oppo- 

 site 2. Asiaticum 



CC. Arrangement of Ivs. alter- 

 nate. 



D. Height about 4 in 3. Middendorffianum 



DD. Height 12 in. or more. 

 E. Stems glabrous. 



F. Sepals equal I. Aizoon 



FF. Sepals unequal... 5. Maximowiczii 



EE. Stems pilose 0. Selskyanum 



BB. Lvs. broad: roots tuberous. 

 C. Arrangement of I vs. scat- 

 tered (rarely opposite in 

 S. Telephium ). 



D. Margin of Ivs. dentate . 1. Telephium 

 DD. Margin of Ivs. nearly 



, ,it ire 8. telephoides 



CC. A rraniji' itient of Ivs. oppo- 

 site (sometimes in S's 

 in S. spectabile). 

 D. Suds obovoid, abruptly 



pointed 9. maximum 



DD. Buds long and pointed. 10. spectabile 



SECTION II. EVERGREEN PERENNIALS. Foliage does not 



die during the winter. 

 A. Foliage flat, broad and rela- 

 tively thin: Ivs. spatulate or 

 wider. 



B. Lvs. in tufts or rosettes (at 

 least those of the barren 

 shoots). 



C. Fls. yellow: anthers yel- 

 low. 



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

 DD. Each fl. % in. across. .12. obtusatum 

 CC. Fls. white; anthers red- 

 dish. 

 D. Barren shoots with Ivs. 



in S's 13. ternatuni 



DD. Barren shoots icith 



scattered Ivs 14. Nevii 



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

 c. Stem erect: fls. whitish or 



pinkish 15. populifolium 



CC. Stems (barren ones) pros- 

 trate. 

 D. Fls. yellow. 



E. Margin of Ivs. 

 coarsely toothed 

 above the middle. 

 F. Petals lanceolate.. 16. Kamtschaticum 



FF. Petals linear 17. hybridum 



EE. Margin of Ivs. entire. 18. Japonicum 

 DD. Fls. pink, rose or 



white. 

 E. Arrangement of Ivs. 



opposite. 



F. Base of Ivs. nar- 

 rowed 19. stoloniferum 



20. oppositifolium 

 FF. Base of Ivs. cor- 

 date 21. Ewersii 



EE. Arrangement of Ivs. 



alternate .22. Anacampseros 



EEE. Arrangement of Ivs. 



in S's 23. Sieboldii 



AA. Foliage more or less terete: 

 Ivs. usually linear, not wider 

 than lanceolate (unless in 

 No. 28). 



B. Apex of Ivs. sharply pointed. 

 C. Fls. yellow. 



D. In florescence decurved. 24. reflexum 

 DD. Inflorescence not de- 



curved. 

 E. Cymes scorpioid 25. stenopetalum 



SEDf.M 



EE. Cymes umbellate 'JO. 



CC. Fls. Him- i,r K-li iff ...... .'21. 



BB. Apex of Irs. blunt. 

 C. Fls. yellntr. 



D. Lvs. ovoid t bitti r L'H. 



DD. Lvs. oblong, tasteUis..2S. 

 CC. Fls. white or ;miA'. 



D. Plants usually glau- 

 cous. 



E. Anthers black :). 



EE. Anthers purple .'fl. 



EEE. Anthers pink '.VI. 



DD. Plants nut giant-oil*. 

 E. F/s. /lin/.-ish : buds 



5-angled .'i.'!. 



EE. Fls. white: buds ob- 

 long 34. 



EEE. Fls. white: buds 



roundish ...35. 



1637 



sarmentosum 

 pulchellum 



acre 



sexangulare 



dasyphyllum 



Hispanicum 



brevifolium 



Lydium 

 album 



Monregalense 



SECTION III. ANNUALS or BIENNIALS. These die after 

 flowering and fruiting. Annuals flower the first year, 

 biennials the second. 



A. Lvs. flat, not cylindrical. 



B. Fls. scarlet 36. sempervivoides 



BB. Fls. yellow 37. Formosanum 



AA. Lvs. more or less cylindrical. 



B. Fls. blue 38. caeruleum 



BB. Fls. dull rose or white 39. villosum 



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. : Ivs. scattered, oblong, 1 x % 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. Asiaticum, Spreng. Height 6-12 in. : Ivs. opposite, 

 linear, coarsely and irregularly toothed: fls. greenish 

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

 Summer. Himalayas. Cultivated abroad and possibly 

 in America. Its almost pinnatifid 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. Middendorffianum, Maxim. Lvs. alternate, ob- 

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

 topped c) r me. 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 1 ft. or more, usually l%-2 ft. : 

 Ivs. alternate, oblong-lanceolate, coarsely and irregularly 

 toothed for the greater part of their length, IV**.*/* in. : 

 fls. yellow, % 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. Maximdwiczii, Regel. Height 1 ft,: Ivs. 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 uneojial 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 Selskianum, Regel. Also spelled Selskyamtm. 

 Height 12-18 in. : Ivs. alternate ( 1), serrate in the distal 

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

 leafy cyme. Late summer. Amur., Manchuria. 1 

 sembles S. Aizoon but has narrower and pilose leaves. 

 Offered in 1893 by John Saul. 



7 Telephium, Linn. ORPINE. LIVE-FOREVEK. Fig. 

 228* Height 12-18 in.: Ivs. scattered, rarely opposite, 

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



