OF GREAT BRITAIN, 13 



Allied to Pt. aspersellum (Ach.) Nyl., but differs in the thallus and spores. 

 Spores .010—11 mm. long, .005.6 mm. broad. Gelatina hymenea I blue, then 

 dusky lutescent. 



V. LEPTOGIDIUM, Nyl. 



Granula gonima moniliformly concatenated. " Syngonimia 

 scytonemoid." 



1. L. dendriscum, Nyl, virescerU, towards the base fUmo- 

 pallescent, opake, round, or obsoletely somewhat compressed, exces- 

 sively branched, slender, small, forming intricate fruticuli ; apothecia 

 pale or pale-rufous, smallish; epithecium at length somewhat 

 convex ; spores 8, colourless, ellipsoid, simple ; gelatina hymenea I 

 blue. 



On mossy trees on lofty mountains, rare. 1861. 



Stn:— Nyl. Pyren. Or. 48. Nyl. Syn. 135. L. Moorei, height. Lich, Fl. 

 2nd ed. p. 27. 



Pig :— Trans. Bot. Soc. Edinb. 7. 1. 10. f. 2. 



Geog. Disteib : Brazil, Isle of Bourbon, Papejti and New Caledonia. 



Bot. Pkov :— 19. 20. 



Ireland : — Glena, Killarney, Br. Cwmmgtom,. (1861). Glengariff ! Adm. Jones. 



Crombie, in Journ. Bot,, says, " On submitting a specimen of Leptogimm 

 Moorei, Hepp. to Nylander he pronounced it to be entirely the present species. 

 In all the specimens which I have seen in herb. Carroll- & ex herb. Jones, 

 there are no apothecia present, and it is most likely that the anomalous 

 apothecia hitherto described were simply spermogones, though even these, 

 which are not unfrequent in the specimens referred to, are scarcely rightly de- 

 veloped. This is another of those interesting exotic species which find their 

 way to S.W. Ireland." 



TBIBE II. COLLBMBI. 



Thallus very various, crustaceous, granulose or lobate, laciniate 

 or microphylline ; granula gonima glaucous-green, either monili- 

 form or variously dispersed. Apothecia lecanorine or biatorine or 

 endocarpoid. 



I. SYNALISSA. DR. Nyl. 



Thallus nigricant, minute, of various form, thinly incrusting, 

 stibmembranaceous, granulose, fruticuloso-divided, granula gonima 

 in globular cells ; apothecia innate, concolorous, lecanorine or en- 

 docarpoid. Spermatia oblong. 



1. S. symphorea, (DC.) black, fastigiato-divided, branches terete, 

 obtuse, sometimes only noduliform ; apoiliecia terminal, concolorous, 

 punctiformi-impressed, at length dilated, ihalline margin tumid; 

 spores 8-24, colourless, ellipsoid or sphserical, simple. 



On maritime calcareous rocks, rare. 



Syn.— Collema, DC. Fl. Fr. 2. 388. OoUema synalisswm, Ach. L. U. 640. Syn. 

 317. Synalissa, Nyl. Syn. 94. Mudd Man. 35, 



Tig :— Hepp Sporen t. 11, f. 89. Nyl. Syn. 1. c. t. 3. f. 2. 



Bxs :— Zw. 366. Hepp 89. Anzi It. S. 1, Anzi Venet. 6. 



Geog. Disteib: — Central Europe, France, Pyrenees, Germany, Italy, Algeria. 



Bot. Pkov :— 1. 25. 



England: — St. Vincent's Kocks, near Bristol. Dr. Thwaites. Baddicombe, 

 Devon. Adm. Jones. 



Gelatina hymenea I. — " Spores .009 — .012 mm. long, .006—9 mm. broad." 

 (Nyl.) " Spores .00125 in. diam. (Mudd t. 1. f. 2)." 



