IIS Dr. Goo!?EisOL'GH and Mr. WoodwARd'j Obfervations 



on 



gines, necnon, fed rarius, utriufque pagince nervi, procefTubus den- 

 tato-fpinofis tuberculiferis armati funt. 



From the examination of the Linnaean Herbarium it appears, 

 that this elegant fpecies was entirely unknown to Linnasus, and 

 that the rubens of Sp. PI. and his other works is the plant which is 

 called crtfpus in the Flo7-a j^ngUca, and proUfer in the Flora Scot'ica. 

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

 to this fpecies. 



The different appearances of this plant in the different ftages of 

 its growth, render ir 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 

 Philojoph'ia Botanica, 



In its young flate, it prefents a branched frond with obovatc 

 crenated leaves, extremely refembling in fhape the young leaves of 

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

 fhoot out, the crence are formed into deep nfTures, 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 Fl. Dan. 652, where both forts of leaves are re- 

 prefented. Gm. lOf. I. reprefents it in a more advanced ftate, 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 frudifica- 

 tion might be fuppofed lanceolate pedunculated tubercles ; but 

 which when highly rriagnified are found to be dentated proceffes 

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

 feeds. 



In 



