CRYPTOGAMIA FUNGI. 197 



figure. The little clusters infest both sides of the leaf, 

 and are seated on a pale spot, or encircled by a yellow halo. 



22. P. syngenesarum, capsules very shortly stalked, ovate, col- 

 lected in oval blackish-brown raised spots, either covered by the 

 epidermis, or immersed in a circle formed by its rupture LINK 

 in WILD. vi. ii. 74. 



Hal. On the leaves of thistles, and of the goat's-beard. 



23. P. bullaria, capsules ovate with equal cells, very shortly 

 stalked, collected into small oblong swollen dark brown spots, 

 covered by the smooth epidermis. LINK, ut sup. 78. Bullaria 

 umbelliferarum, Bot. Gall. ii. 886. 



Hob. On the stem of the hemlock in autumn, very com- 

 mon. 



24. P. Fabce, capsules ovate-globose, 1 -celled, on a rather long 

 stalk, collected into minute circular or oblong spots, compact and 

 surrounded by the ruptured epidermis GREV. Crypt. FL t. 29. 

 P. globosa, GREV. FL Edin. 434. Uredo appendiculata, Sot. Gall. 

 ii. 897. 



Hab. On the leaves of the heath pea (Orobus tuberosus)^ 

 in autumn. Dulaw Dean. 



Notwithstanding the capsules are only 1 -celled, this is de- 

 cidedly a Puccinia in habit and other characters. 



108. UREDO. 

 * Colour white. 



1. U. Candida, in large irregular or sometimes circular chalk- 

 white spots ; capsules globular, pellucid HOOK. Scot. ii. 15. 

 GREV. FL Edin. 442. Crypt. FL t. 251. U. Thlaspi, Sow. Fung. 

 t. 340. 



Hab. On the leaves and stems of various Cruciform and 

 Syngenesious plants, which, when infested with it, ap- 

 pear as if they had been daubed with whitening. 



I have observed this parasite to assume occasionally a very 

 beautiful purple colour. When on the common scurvy 



