302 LlCnEXACEl. [PHYSCIA. 



sometimes sli<ili<ly convex, brownish-black, the margin black, entire ; 

 spores dark-brown, 0,018-2(3 mm. long, U,011-15 mm. thick. — 

 Cromb. Lich. Brit. p. 37: Leight. Lich. Fl. p. 144, ed. 3, p. 133. 

 — Borrera intricata Aludd, ^Man. p. 104. Lichen iutricatus Dtsf. 

 n. Atl. ii. (1800) p. 420, t. 258. f. 3. Borrera AtJantka Gray, 

 Nat. Arr. i. p. 435 ; Sm. Eng. Fl. v. p. 223. Lichen Atlaniicus Sm. 

 in Eng. Bot. t. 1715. Lichenoides siibhirsuium teres, scuteUis parvis 

 nifjris Dill. Muse. 157, t. 21. f. ol.— Brit.Exs.: iludd, n. 70; 

 Cromb. n. 49. 



A -well-marked species, at first sight somewbat resembling narrower 

 states of P. villosa, -« hich does not occur so far north as the British Isles, 

 but ditiering from it at once in the colour of the apothecia. The tliallus 

 sometimes spreads extensively, and the lacinife vary somewhat in length. 

 As observed by Nylander (Syn. i. p. 400), the whitish villosity of the 

 thallus, which occasionally becomes more or less evanescent, consists of 

 hollo w filaments scarcely articulate. The apothecia are extremely rare 

 in this country, but tbe spermogoues, which have the spermatia 0,003-4 

 mm. long, scarcely 0,001 mm. thick, are more frequent. 



Hab. On rocks and trunks of old trees iu maritime districts. — I)i<tr. 

 Only in S. England, in one or two places on the coa^t of Sussex. — B. M. : 

 Bracklesham iu Selsey Island, near Chichester, and cUffs near Hastings 

 (fruit), Sussex. 



7. P. ciliaris DC. Fl. Fr. ii. (1805) p.396.— Thallus diflfuse, sub- 

 ascending or decumbent, loosely adherent, lineari-laciniate, grecnish- 

 grej' or greyish-brown ; beneath pale, canaliculate ; laciniiie multifld, 

 imbricato-intricate, the margins, especially towards the apices, 



ciliate, with long fibrils (K~, CaCl~). Apothecia pedicellate, large, 



csesio-pruiuose or naked, brownish-black, tbe margin entire, crenate 

 or ciliate ; spores oblong, 0,030-50 mm. long, 0,018-24 mm. 

 thick.— Cromb. Lich. Bri^t. p. 38 ; Leight. Lich. Fl. p. 145, ed. 3, 

 p. 133. — Borrera ciliaris Gray, Xat. Arr. i. p. 434 ; Hook. Fl. Scot, 

 ii. p. 56; 8m. Eng. Fl. v, p. 226; Mudd, Man. p. 105. Lichen 

 ciliaris Linn. Sp. PI. (1753) p. 1144; Huds. Fl. Angl. p. 448; 

 Lightf. Fl. Scot. ii. p. 828 ; AYith. Arr. ed. 3, iv. p. 55 ; Eng. Bot. 

 t. 1352. Lichenoides hiapidum majiis et riijidius, scutdlis nic/ris 

 Dill. Muse. 150, t. 20. f. 45. Lichenoides arhoreinn foliosuni cine- 

 reum, scutcUis ni(/ris, foUorum extrmiitatibus 7iisp)idis et prdosis Dill, 

 in Ray Syn. ed. 3, p. 73, n. 07. — Brit. Exs. : Mudd, n. 77 ; Leight. 

 n. 304 ; Cromb. u. 5n ; Larb. Casar. n. OS ; Lich. Hb. u. 125 ; 

 Bohl. n. 38. 



A rather variable plant as to thallus and apothecia. The thallus may 

 have the hicinite longer or shcrter, broader or narrower, often more or 

 less white-pulverulent, with pale or sordid flexuose cilia. In colour it 

 varies from greyish to greyish-bniwn or cervine according to nature of 

 habitat, but when moif-t it is constantly greenish. States occasionally 

 occur in S. England with the laciniaj npproaching to var. crinalis (Schl., 

 Schai-r.), but not sufticiently typical. The a])olhecia, wlien present, are 

 plentiful, becoming at length naked and darker, witli the receptacular 

 margin very variable, being frequently with us in the same specimen 



