-I'l'l Notices respecting New Booh. 



of ghiuca. Poa decumbens, which has always been regarded as 

 an unnatural Poa, is, with Brown, made into a natural genus, 

 Triodia. Sir James E. Smith concurs with Schreber in making 

 Dactylis stricta a Spartina. 



Festuca avsia, E. B., is brought back to ovina, which will 

 be concurred in ; but is not F. tenuifolia good ? The absence 

 of the awn is probably a sufficient character joined with the 

 habit. Schroder and Hooker had abolished F. vivipara, but 

 the President still retains it. Festuca trijiora is very properly 

 made a var. of F. gigantca, as F. decidua is of calamaria. It 

 had been thought that this last-named species was confined in 

 England to the North ; but that accurate botanist Mr. K. 

 Forster has lately found it at Harrison's Rocks near Tunbridge 

 Wells. Bromus pi una/ us is again joined with Festuca, as Hud- 

 son had done before. It is not confined to chalk, but is most 

 abundant on the oolite ; and Mr. Greenough says it is very 

 plentiful on magnesian limestone. Schrader and Hooker are 

 followed in B. multiflorus, which turns out to be a different 

 plant from what the Fl. Br. had made it. B. pratensis, E. B., 

 and arvensis, E. B. 920, are merged in ?-acemosus. B. squa- 

 mostts most botanists will think ought to be excluded as not 

 English. Lontr Sleddale in Westmoreland has been ransacked 

 often enough tor Slipa pennata, to warrant the assertion that it 

 is not to be found there ; and Dr. Richardson, the supposed 

 finder, is of little authority. 



Avena planiculmis, a discovery of that extraordinary lucky 

 botanist G. Don, is now alpina. The writer of this has en- 

 deavoured in vain to understand the Arundo epigeios of 

 Schrader ; many of ours answering much better to his figure 

 of pseudophragmites, and none of them to his figure of epigeios. 

 He relies chielly on the insertion of the arista. Rottbollia 

 filiform is is surely not worthy of notice. Etymus is not con- 

 fined, as the present writer has observed, to chalk ; and he 

 would notice, by the by, that the learned President often in- 

 correctly uses the word limestone as synonymous with cal- 

 careous soil. Tri-ticum repeiis y is treated by many good 

 botanists as a species under the trivial name of mar it imam, but 

 it is here regarded still as a variety. Holosteum umbellalum is 

 not made with Hooker a Cerastium ; in which most systematic 

 botanists will concur. 



Among the Galia, of most difficult discrimination, are two 

 new ones, cinereum and aristatum, still from Mr. George Don. 

 Any one who would illustrate this difficult family would con- 

 fer great benefit on systematic botany. The foreigners have 

 many more than we have t'dniittcd. Sanguisorba media is new 

 from G. Don. For Epimcdium alpinum there are some new 

 habitats. The one on Skiddaw should be ascertained, as that 



looks 



