Lrpraria.} LICHEN ES. 1 68 



gee by Nees and Sprengel, while Dr. Greville's Cldorococcum (a 

 genus of Algce) vulgare, which he has most judiciously sepa- 

 rated from the PahneUa botryoides, with which it had been 

 confounded, is the Lepraria viridis of Messrs. Turner and 

 Borrer. But it appears to have an equal claim to rank with 

 the other Lepraria' among the Lichens, as with the Alga. No 

 distinct fructification has been found, and the character of the 

 Genus Chloroeoccum is in reality the same as that of Lepraria, 

 "Gratuda omnino libera minima aggregata absque gelallna? If 

 therefore L. viridis be removed to the Algce, so should the rest of 

 the Leprarice. 



1. L. viridis, Turn, and Borr. (common green Lepraria); crust 

 none, sporules extremely minute bright green globular col- 

 lected into a continuous thin crustaceous powdery mass. Turn, 

 ami Borr, LicJi. Br. p. 6 — L. botryoides, (excl. the syn. of LJnn. 

 and DHL). Ach. Syn. p. 3-31 ? — Lichen viridis, Schreb. Spied. 

 p. 139. — Chloroeoccum vulgare, Grev. Scot. Cr. Fl. t. 262. 



On pales, old buildings, trees and walls, abundant. — The granules are 

 often clustered together, and Dr. Greville observes them to be so in 

 fours. — The membranous base to this species, noticed by Sir J. E. Smith, 

 has not been remarked by other Botanists. 



2. L. murdrum, Grev. (wall Lepraria); sporules green sim- 

 ple minute oval-oblong. — Chloroeoccum murorum, Grev. Scot. Cr. 

 FL t. 325. 



On walls and stones, frequent, Dr. Greville. — This forms small spots 

 of a yellowish-green colour, the spots at length becoming confluent. 

 It is so closely allied to the preceding, that whether that be placed 

 with the Algae or with the Lichens, the present should rank next to it. 



3. L. ochrdcea, Turn, and Borr. (peltry Lepraria); crust none, 

 sporules extremely minute ochraceous-ydlow collected into thin 

 scattered patches. Turn, and Borr. Lie//. Br. p. 8. E. Bot. 

 t. 2408. 



Trunks of old trees, nt tiurst-pierpoint and Poynings, Sussex. Trees 

 about Yarmouth and Halesworto, geperallj upon Ifypvum sericeum, 



4. L. jlara. \\\\. ( bright-yt Ibnr Lrprnrin); orttSl none, spor- 

 ules extremely minute bright yellow collected into s continuous 

 crustaceous powdery mass. Ath. Syn. p. 831. /•;. Hot. i. 1950. 



'Turn, and limr. Lnli. />'/ . p. 9, -Lichen ffarus. Schreb. — fjyssns 

 candt laris. Linn. 



Frequent on the rugged trunks of Oaks, on boarded buikfinga and 

 palesj sorely <»n walls. 



."). L. alba. Arh. ( white Lipniiin); CTUSl grey edged with 



white downy fibres, sporules extremely minute snowy-white 

 densely collected into continuous crustaceous patches. Ack. 



Mtli. p. :;. /:'. Hat. t. 1849. Turn, and Borr. tick. Br. p. IS. 



— Lrcnba a/bn. Ach. Si/n. p. 2 J ? — fiyssiis but, a. Linn J 



Trunks of trees and boarded buildings, common: lometifnes, but rarefy 

 on walls. 



