ACOTYLEDONS. FUNGI. Pl/crinict . ]/ 



h P. Menthce, scattered punctiform dark brown, sporules? (pe- 

 ridia) sub -quadrangular, stipes very short. Pers. p. 227 . 



HAT?. On the leaves of Mentha Mrsuta, at Dudding-ston Loch, near 

 Edinburgh. September. Mr. Greville. 



2. P. Volant i) scattered blackish brown, peridia fusiform. 

 Pers. p. 227. 



HAD. On the leaves of Galium cruclatum, about Edinburgh. Sept. 

 Mr. Greville. 



3. P. Polygoni amphilnt, opaque brown depressed, peridia 

 oblongo ovate attenuated into the footstalk. Pers. p. 227. 



HAB. On the leaves of Polygomim amphibium, about Edinburgh. 

 August. Mr. Greville. 



4. P. Polygoni avicularis, sublinear scattered brown, peridia 

 globose. Pers. p. 227 . 



HAH. On the leaves of Polygonum avicularc, about Edinburgh. 

 September. Mr. Greville. 



5. P. rtsparagi, scattered brown ovato-oblong convex much 

 crowded in the disk, peridia oblong obtuse 2-celled. Decand. 

 Fl. Gall. Syn. p. 45. Moug. ei Nest I. Ao. 392. 



HAB. Upon the stalks of dead cabbages, Mr. Greville. 



6. P. Circcece, scattered verruciform red brown, peridia ovate 

 acute. Pers. p. 228. 



HAB. On the leaves of Circcea Lutetiana and alpina, Castle Campbell, 

 and Rumbling Brigg. September. Mr. Greville. 



7 . P. Graminis, crowded linear becoming black, peridia some- 

 what turbinated. Pers. p. 228. Uredo Frumenti, Sow. t. 140. 

 Sir Jos. Banks' s Essay on the Blight in Corn, in the 2d vol. 

 of Annals of Botany, p. 51. t. 3 and 4. 



HAB. On the stems find leaves of corn, and various grasses, too 

 common. 



This is that disease so well known to agriculturists by the names of 

 blight, mildew, and rust in corn. Strauss suys, that " the Uredo 

 linearis of this work ( U. longissima of Sow.) is but the young state 

 of it." For a scientific history of this injurious plant, I must refer 

 to the Essay of Sir Jos. Banks, above cited, and to a paper written 

 by my friend, the Rev. Mr. Kirby, in the 5th vol. of the Linn. Trans, 

 p. 102. The plates quoted in the former work do not do justice 

 to the inimitable drawings of this Fungus, made by Mr. Bauer, for 

 Sir Jos. Banks. An unpublished engraving, from the original 

 drawing, presented to me by Sir Joseph, I have deposited in the 

 portfolio of drawings at the Royal Botanic Garden, Glasgow. It 

 is to be lamented, that no certain cure for this disease has yet been 

 discovered ; a true knowledge of its structure, however, may tend 

 to this desirable end. 



8. P. mucronatcii crowded black stipitate cylindrical mucronate, 

 3 5-celled, footstalk incrassated at the "base. Pers. p. 230. 

 Nees von Esenbeck, t.\. f. 14. P. Rubi, Sow. t. 400. f. 9. 



. Rosce, peridia thickish rather obtuse. P. Rosce, Decand. 



M 



