68 



and I find only one of them iCheiranthiis caspicus) cited from 

 this source in the Index Kewensis. There are 41 instances in 

 which Lamarck offers plant names differing from those of Pallas. 

 In most cases these are corrections of identification or nomen- 

 clature and do not specially affect us. Some, usually cited 

 from other sources, may find their earliest publication here. In 

 a few cases, entirely new specific names are proposed. These 

 are as follows: 



1. Polycnemum corispermoides for P. triandrum of Pallas. 



2. Salsala fragilis for S. fruiescens of Pallas. The S. frutescens 



of Pallas is cited in Index Kewensis as a synonym of 6*. 

 crassa Bieb. 181 1. Pallas has '' Salsola an {frutescens?) 

 Kali fruticosum spicatum, Buxb. cent. L. p. 8, t. 13." 

 Did he mean to query identity with S. fruticosa L., which 

 is a Suaeda or Dondia? If S. frutescens is not intended in 

 that sense, it seems to be a valid new name. The leaves 

 are described as terete, and evidently a Dondia is intended. 

 On the whole it appears reasonable to suppose that Pallas 

 did not intend to propose a new name, and in that case the 

 species becomes Dondia fragilis. 



3. Gentiana alpestris for G. punctatae affinis, alpina, albiflora, 



of Pallas. This is, I believe, G. decumbens L. f., but the 

 name alpestris seems to have escaped all bibliographers. 



4. Saxijraga daurica for ^S". punctata of Pallas (erroneous de- 



termination). This is the plant known today as S. da- 

 vurica Willd. 1799. The section Davuricae Engler and 

 Irmscher must accordingly become Dauricae, and if we 

 follow the generic nomenclature of Small, the species is 

 Micranthes daurica (Lamarck). 



5. Cheiranthus caspicus, which is accounted for in Index Kew- 



ensis and said to be Sterig^na tomentosum. Under Pallas 

 '^2^-) Dry as geoides, Lamarck has a discussion in which he 

 separates Geum potentilloides {Dryas geoides Pallas) from 

 Geum anemonoides {Dryas anemonoides Pallas). The Dryas 

 geoides is Coluria geoides, also called C. potentilloides by Robert 

 Brown. Potentilla geoides Birch {Drymocallis geoides Ryd- 

 berg, the combination only in index to Potentilla mono- 

 graph) is quite another thing, apparently. The combina- 

 tion Geum anemonoides dates from Lamarck, 1794, not 



