49 



NOTES ON SEDUM.— III. 



By R. Lloyd Pkaegee. 



(Continued from Joum. Bot. 1918, p. 152.) 



Ii^ the present notes seven new species o£ Sedum are described, 

 and three new varieties. The new species, which are all based on 

 living material, are derived mostly from an interesting packet of seed 

 received from the Rev. E. E. Maire in 1915, collected by him about 

 Tong-tchouan, in Yunnan. These seeds germinated, producing nine 

 species, and it is indicative of the great richness of the Yunnan 

 6Vf/««i-flora that, despite the large number of new species described 

 from that area in recent years, four of these were new. The 

 remaining species represented were S. Celled K. Hamet and H. Le- 

 hlancoB H. Hamet, both described from sjDecimens in the Paris Her- 

 barium, collected in Yunnan b}^ Delavay ; S. yunnaneuse Franchet 

 var. valerianoides II. Hamet (section Pseitdorhodiola Diels), an 

 interesting plant evidently common in Yunnan (see Notes from 

 R. Bot. Gard. Edinb. viii. 139 et seq.) ; S. trijidum Wallich, a familiar 

 Himalayan species of the Waodiola section, not reported previously 

 from China (the plants recorded as varieties of S. trijidum in Notes 

 R. Bot. Gard. Edinb. v. 119, vii. 7, 11, 19, 181, 293, belong to 

 8. linearijolium Koyle (see Notes, vii. 399)) ; and the variable S. indi- 

 cutnR. Hamet {Crassula indica Decne) in several different forms, of 

 which one is now described as new. Of the remaining new species, one 

 comes from Bhutan, a plant of the well-marked Rhodiola section, 

 which has its head-quarters in the Himalaya- Yunnan region ; another 

 from California, where it reinforces the spathulifoliurn group of 

 N.W. North America ; and the last is a plant from a garden source, 

 allied to the group just mentioned, and probably collected in British 

 Columbia. The new species will be figured later in the Journal of 

 the Royal Horticultural Society. 



Section Rhodiola, Series Rhodiola sensu stricto. 



^ Sedum Cooperi, sp. nov. Species f oliis cauleque S. elongato Wall, 

 similis, etiam S. hupleuroidi Wall, consanguinea. Ab priore caule 

 dimidio graciliore, foliis minoribus breviter jDetiolatis vel sessilibus, 

 inflorescentia parce foliosa, floribus dimidio minoribus densius dis- 

 positis, petalis in parte superiore angustioribus, &c., differt. Ab 

 ^. hupleuroide foliis longioribus parte superiore dentatis (nee in- 

 tegris), inflorescentia densiore, floribus dimidio minoribus, squamis 

 majoribus, &c., diifert. 



Herha perennis glabra. Caudex crassus, erectus, ramosus, ramis 

 squamis coronatis. Squamce late ovato-deltoidese, acutse, integrse, 

 ad 1 cm. longie, primo virides, deinde brunnese, paleaceee. Caules 

 pauci, simplices, erecti, graciles, glabri, teretes, foliosi, 30-60 cm. 

 longi, 2-3 mm. crassi. Folia alterna (nonnunquam subternata vel 

 subopposita), glabra, quam internodia longiora, sessilia vel sub- 

 sessilia, vix carnosa, obovata vel elliptica, in parte superiore dentata 

 vel prope Integra, apice rotundata vel subacuta, medio 4 cm. longa, 

 2 cm. lata, superiora minora, infima minutissima. Inflorescentia 

 JouKNAL OF Botany. — Vol. 57. [March, 1919.] f 



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