GROWING about HALIFAX. 131 



**** leafy. CLXV - 



foliacea. 



SPH^ERIA umbilicata punctata Jupra fub-virida infra fulva. 

 Lichen miniatus- Sp- PL 1617- Dill. Mufc. t. 30, Jig. 

 127, 128. Mich. Gen. t. 54, ord. 36, fig. 1, 2, C, D, E, F. 

 Flora Danica, t. 532, Jig. 2. Hudjbn, Angl. 549, Afo. 79. 

 Lightfoot, p. 857, i\fo. 66. 



LEAFY SPH^RIA. 



TAB. CXXXI. 



"T^HIS Sphaeria, from one central root or umbelical cord, 

 -*• fpreads out various leaves, of an hard, tough, coriaceous 

 fubflance, and very different in fize, form, and colour. When 

 it grows on rocks, in a low, moifl, and fhady fituation, they 

 are extended to a confiderable breadth ; the margins lobed, 

 waved, gafhed in, and fometimes other fmaller ones grow upon 

 them ; and in rainy weather, or when immerfed in water, the 

 furface is of a flrong dufky green, the under fide of a fulvous 

 red : In this flate it is expreffed on the plate at a. When the 

 plant is dry the green changes to a brownifh afh colour, the 

 marginal lobes roll backward, but the colour of the under fide 

 changes not : In this ftate it is figured at c. 



On very dry rocks, which are expofed to much fun and 

 air, the leaves are fhort, thick, hard, of a dulky olive colour, 

 numerous, and crowded together; thus it is feen at b. In all 

 thefe flates, the furface is diftinguilhed with numerous very 

 minute pores, which are {ecn, a little magnified, at d. Thefe 

 pores are the mouths or outlets of the fphaerulae, which are 

 lodged within the fubftance of the leaf. Thefe fphaerulae are 

 truly globular, of a beautiful gloffy orange colour ; containing 

 when young a pale coloured gelly. The internal fubflance of 

 the leaf is of a bright beautiful green. A particle is magni- 

 fied at e. to fhew the fphaerulae. 



Grows upon calcaneus rocks, in Craven. 



