112 Dr. GoodenOUgh and Mr. Woodward'j Obfervalhns on 



gines, necnon, fed rarius, utriufque paging nervi, proceffubus den- 

 tato-fpinofis tuberculifcris armati funt. 



From the examination of the Linnaean Herbarium it appears, 

 that this elegant fpecies was entirely unknown to Linnseus, and 

 that the rutins of Sp. PL and his other works is the plant which is 

 called crtfpus in the Flora Anglica y and prolifer in the Flora Scotica. 

 We have therefore been under the necefTity of giving a new name 

 to this fpecies. 



The different appearances of this plant in the different ft ages of 

 its growth, render it very difficult to give a defcription by which it 

 may be recognifed at all ages, and at the fame time to avoid that 

 prolixity which is fo repugnant to the principles laid down in the 

 Philofophia Boianica. 



In its young (late, it prefents a branched frond with obovate 

 crenated leaves, extremely refembling in lhape the young leaves of 

 the oak; whence its Englifh name. After this the lateral nerves 

 {hoot out, the crence are formed into deep Mures, and the feparate 

 leaves put on a pinnatifid appearance, with fomewhat linear feg- 

 ments. In the change from one of thefe flates to the other, it is 

 excellently figured Ft. Dan. 652, where both forts of leaves are re- 

 prefented. Gm. 24. 1. reprefents it in a more advanced flate, but 

 very indifferently. 



In maturity, the whole margin of the frond is clofely fringed 

 with what appear to the naked eye to be minute fpines or cilia, and 

 which examined with a common eye-glafs in a ftate of fructifica- 

 tion might be fuppofed lanceolate pedunculated tubercles; but 

 which when highly magnified are found to be dentated proceffes 

 of the leaf, in which are imbedded minute tubercles replete with 

 feeds. 



3 In 



