CLADONIA | CLADONIACE® 455 
32. C. parasitica Hoflm. Deutsch]. Fl. ii. p. 127 (1795).— 
Primary thallus of small narrowly erose-laciniate crowded 
squamules, sorediose at the margins and on the under surface, or 
becoming almost entirely a mass of soredia, greenish-white or 
brownish-grey above ; podetia short, slender, somewhat thickened 
upwards, simple or irregularly branched, and splitting or entire 
at axils and tips, ascyphous, non-corticate, furfuraceous, usually 
squamulose (K + yellow, CaCl —). Apothecia small, usually 
conglomerate, brown or pale; spores oblong-fusiform, 10-15 p 
long, 3°5-4 » thick.—C. delicata Floerk. Clad. Comm. p. 7 
(1828) ; Cromb. Lich, Brit. p. 20 (excl. var.) & Monogr. i. p. 160 ; 
Leight. Lich. Fl. p. 58; ed. 3, p. 55 (excl. var.). C. squamosa 
var. delicata Fr. Lich. Eur. p. 231 (1831); Mudd Man. p. 56 & 
Brit. Clad. p. 21. Lichen parasiticus Hoffm. Enum. p. 39, t. 8, 
fig. 4 (1784). L. delicatus Ehrh. Crypt. Exs. n. 247 (1793) ; 
Ach. Lich. Suec. Prodr. p. 199 (1798); Engl. Bot. t. 2052. 
Cenomyce delicata Ach. Syn. Lich. p. 274 (1814); Tayl. in 
Mackay Fl. Hib. ii. p. 80. Helopodium delicatum 8. F. Gray 
Nat. Arr. i. p. 416 (1821). Scyphophorus parasiticus Hook. in 
Sm. Engl. Fl. v. p. 237 (1833). 
Exsicc. Leight. n. 382; Mudd n. 15 & Clad. n. 43. 
Agrees with C. swbsquwamosa in the chemical reaction with potash, 
but is distinguished by the crowded sorediose basal squamules. In 
favourable situations it spreads extensively, and is generally fertile. 
Hab. On rotten rails and stumps of trees, rarely on turfy soil in 
inland districts.—Dzistr. Somewhat scarce throughout England, rare 
in S. Scotland and S. and W. Highlands.—B. M. Lyndhurst and 
Brockenhurst, New Forest, Hants; St. Leonard’s Forest, Sussex ; 
Chelsfield, Kent; Thorndon Hall, Essex; Bagot’s Park, Stafford- 
shire; Aymestry, Herefordshire ; Crown East Wood, near Worcester ; 
Llandrindod, Radnorshire; Easby Wood and Kildale, Cleveland, 
Yorkshire; Wastdale, Cumberland ; New Galloway, Kirkcudbright- 
shire; Barcaldine, Argyll; Craig Calliach, Perthshire. 
B. Coccitrer&. Apothecia red-coloured. 
1. Podetia scyphiferous. 
Basal squamules large. 
33. C. luteoalba Wils. & Wheld. in Trans. Liverp. Bot. Soc. i. 
p. 7 (1909).—Primary squamules rather large (up to 1 cm. long), 
irregularly crenate, incurved when dry, yellowish-green, becoming 
darker above, pale sulphureous and pulverulent beneath (Kf + 
yellow, CaCl—). Podetia rarely developed, very short, 3—5 mm. 
high, cylindrical, rising from the surface of the leaflets, seyphi- 
ferous, the scyphi narrow. Apothecia scarlet, minute, discrete 
on the margins.—Journ. Bot. xlvii. p. 324 (1909); A. L. Sm. 
Monogr. ui. p. 351. 
