66 



ANGJOCARPOUS LICHENS. 



Sussex ! (with patellulae) Mr. Borrer, Park Sychart ! 

 (with patelhilae) Bev. T. Sahoei/, Spec, exsicc. Bolder s 

 Brit. Lick. 



The pateUulae constituting the var. j3. ampUhola (Ach. 

 Syn. 126 (1814). * Lecidina, Fries, L. Ref. 150. (excl. 

 syn.) E. Bot. Suppl. 1. c.) on dissection, exhibit a black 

 receptacle bearing a pale ascigerous disk, covered with a 

 whi^sh pruinose veil. The asci contain 8 sporidia in 

 each, of a slender fusiform or acicular shape, triseptate, 

 pale (see Plate XXVIII. fig. 2). It is not known to what 

 lichen these patellulae really belong. They are in some 

 respects not dissimilar from those of Lichen Griffithii (E. 

 Bot. 1735), but in that plant the sporidia are oblong, 

 uniseptate (see Plate XXVIII. fig. 4). Fries. (/. c.) quotes 

 as synonymous Lichen ahietinus, Ach. v. a. h. 1795, t. 5, 

 /. 7, and E. Bot. 1682, but in the specimen of this in 

 Bohler's Brit. Lich. although the patellulae are very 

 similar, yet the sporidia differ, being broadly and obtusely 

 fusiform, 5 -septate, pale yellow, (see Plate XXVIII . fig. 3). 



2. P. RUDis. Sporidia not contained in asci, free, very 

 minute, innumerable, linear, rounded at each extre- 

 mity, sUghtly curved, pale-yellow. Plate XXVIII . 

 fig. 5. 



Veretjcakia rtjdis, Borr. E. Bot. Suppl. 2637, fig. 2. (1830.) 

 EooJc, Br. PI. 151. 



Original specimen figured in E. Bot. Suppl. in herb. 

 Borrer I 



Nucleus, brownish when dry, gelatinous and pale when 

 moistened. Perithecium dimidiate. 



The colour and texture of the crust distinguish this 

 from P. niveo-atra ; the sporidia from P. leuco-cephala ; 

 and the structure of the perithecium, and form of the 

 sporidia from Verrucaria biformis and V. olivacea. 



Verrucaria rudis pseudO'leuco-cephala, Borr., scarcely 



