ACOTYLEDONS. FUNGI. Uvedo. 15 



Hab. On the leaves of roses about Edinburgh. Mr. Greville. 



4. U. linearis (a. Frumenti), linear very long brownish yellow 

 becoming darker. Fers.p,2l6, Uredo longissima, Sow. 

 t. 139. 



Hab. On the stems of grasses about Edinburgh. Aug. Mr. Greville. 

 This is considered by some authors to be the young of Puccinia 

 Graminis. 



5. U. Sonchi, crowded somewhat confluent yellow, clusters 

 flattish irregular. Pers. p. 217. 



Hab. On the leaves of Soiichus oleraceus, about Edinburgh. Autumn. 

 Mr. Greville. 



6. U. farinosa, confluent farinose ochraceous. Fers. p. 217. 

 Hab. On the leaves of -SaZir ca/^r^a, about Edinb. Aug. Mr. Greville. 



7. U. Tussilaginis, in sub-concentric orange-coloured spots. 

 Fers. p. 218. 



Hab. On the leaves of Tussilago Petasites, Rosslyn, and about Edin- 

 burgh. August. Mr. Greville. 



8. U. populinttf crowded yellow unequal blistered generally 

 closed. Pers. p. 219. 



jS. letulina, crowded yellowish minute rounded closed. 

 Hab. On the leaves of Populus balsamifera and trenuiht ; [3. on the 

 leaves of Betula alba, about Edinburgh. Mr. Greville. 



9. U. MentficBy scattered orbicular flattish pale brownish. Fers. 

 p. 220. 



Hab. On the leaves of Mentha arvensis, Arlary and Kinross. Sept. 

 Mr. Greville. 



** Dust brown or blackish (Nigredo). 



10. U. suaveolenSj>coi\f{uent fragrant unequal, dust pale brownish 

 purple. Pers. p. 221. 



Hab. On the leaves of Cnicus arvensis^ King's Park, Edinburgh. 

 June, July. Mr. Greville. 



*** Dust white {Albugo). 



11. U. Candida, diffuse white. Pers. p. 223. 



a. Thlaspeos, large bursting the epidermis with a profuse dust. 



Uredo Thlaspi, Sow, t. 340. U, cruciferarum, Decarid. 



p. 49? 

 Hab. Upon the stems of Thlaspi Bursa-Pastoris, and upon the 



leaves of various cruciforn plants. 



**** Dust blackish or brown, parasitic within the fructification of 

 plants. {Ustilago, Smut.) 



12. U. Segelum, dust or sporules naked copious black within 

 the fruit or glumes of grasses. Fers. p. 224. Mougeot and. 

 Nestl. No. 291. Relicularia Segelum, Bull. i. 422. /. 2. 

 Ustilago Segetum, Link in Sturm's Deutsch, Flora. 



