228 CYCLOCARPINEX: | CANDELARIELLA 
specimen recorded from Anglesea has 8 spores in the ascus and 
belongs to C. medians. 
Hab. On rocks in a maritime district.— B. M. Portlethen, Kinear- 
dineshire. 
2. C. medians A. L. Sm.—Thallus orbicular, often irregular, 
lobate at the circumference, the lobes rather flattened or narrow 
and convex, the centre granular-areolate, orange- or citrine- 
yellow, or greyish in the centre (K—). Apothecia rather small, 
dull-brown or yellow, the thalline margin entire or crenulate ; 
spores 8 in the ascus, oblong-ellipsoid, occasionally 1-septate, 
11-17 » long, 4-6 p thick.—Parmelia parietina var. granulata 
Scher. Enum. p. 50 (1850). Placodium medians Nyl. in Bull. Soe. 
Bot. Fr. ix. p. 262 (1862). Lecanora medians Nyl. in Bull. Soc. 
Bot. Fr. xii. p. 367 (1866); Leight. Lich. Fl. p. 205; ed. 3, 
p. 189; Cromb. Monogr. i. p. 370. 
Hasicc. Larb. Lich. Hb. n. 59. 
The lobes of the circumference resemble those of Placodiwm 
murorum, but it is easily distinguished by the absence of reaction 
with potash. 
Hab. On calcareous rocks and walls in lowland and upland 
districts.—Distr. Rare in Central and W. England.—B. M. Pimbury 
Park, Cirencester, Gloucestershire; Llanymynech Hill. Shropshire ; 
Denny Abbey, Cambridgeshire ; Beaumaris, Anglesea. 
Thallus granular. 
3. C. vitellina Miill.-Arg. 1. c«—Thallus effuse, thickish, 
granular, the granules small, roundish, crowded, divided into 
areole, bright or dull orange-yellow (vitelline). Apothecia 
sessile, plane, tawny- or dull-yellow, the thalline margin entire 
or granular-crenulate ; spores many in the ascus (12-24-32), 
ellipsoid-oblong, sometimes slightly curved, becoming 2-celled, 
sometimes obscurely polarilocular, 8-15 p» long, 4-6 p thick.— 
Lichen vitellinus Ehrh, Exs. n. 155 (1785); Dicks. Pl. Crypt. 
fase. iv. p. 23 (1801); Engl. Bot. t. 1792. Patellaria vitellina 
Hofim. Pl. Lich. ii. p. 5, t. 26, fig. 2 (1794). Lecanora vitellina 
Ach. Lich. Univ. p. 403 (1810) (inel. var. corruscans) ; Hook. F. 
Scot. ii. p. 49 & in Sm. Engl. Fl. v. p. 192; Tayl. in Mackay Fl. 
Hib. ii, p. 138; Cromb. Lich. Brit. p. 48 (incl. var. corruscans) & 
Monogr. i. p. 368; Leight. Lich. Fl. p. 180; ed. 3, p. 166 (incl. 
var. corruscans). 
Easice. Bohl. n. 78; Johns. n. 32; Larb. Lich. Hb. nos. 214, 
297, 298. ; 
The thallus forms a dense crust of fine granules divided into 
areole by deep cracks. The thalline margin of the apothecia is often 
granular-crenulate (var. corruscans). Crombie states that maritime 
specimens give a brownish-red reaction with potash, the result 
probably of being sprayed with sea-water. 
