100 LICHENES. 
Gyrophora cylindracea Z4ch. Synops. Lich. p. 65.—Synops. Plant. «q. 1. p. 16. 
Lichen cylindricus Linn. 
Lichen proboscideus Hedw. Plant. Crypt. tab. 1. f. 4. Engl. Bot. t. 522. 
Crescit cum Gyrophora tessellata in monte Cotopaxi, prope Suniguaicu , alt. 2260 hex. 
4. GYROPHORA vzrrra. 
G. thallo leviusculo, sordide cinerascente, subtus fibrilloso, birsuto subconcolori fusces- 
centi nigroque; apotheciis subperiphericis , sessilibus, planis, marginatis; plicis concentricis. 
Ach. 
Gyrophora vellea 4fch. Synops. Lich. p. 68. Flor. Dan. t. 1354. Synops. Plant. «q. 1. 
pax]. 
Lichen velleus Lznn. 
Crescit in saxis porphyriticis montis ignivomi , juxta "Toluccam, alt. 3360 hex. (Regno 
Mexicano-) 
Specimina americana a speciminibus in Islandia et Sabaudia lectis non differunt, nisi eo quod subtus 
minus fibrillosa sint. 
GRAPHIS. Acuan. 
RrceerAcULUM universale crustaceum , plano-expansum,  adnatum, 
uniforme; partiale : thalamium elongatum, thallo immersum ; peri- 
thecio simplici, cartlagineo, dimidiato, laterali (atro), utrinque 
marginante nucleum linearem, discum. formantem, supra subtusque 
denudatum , intus. celluloso- striatum. 4cAar. 
1. GRAPHIS srnprENTINA. 
G. crusta cartilagineo- membranacea, inzquabili, rugulosa, determinata, alba cinereaque; 
apotheciis immersis, elongaüs, confers, flexuosis, subsimplicibus ramosisque, obtusis, 
cxsio- pruinosis; disco demum plano; margine thallode laterali, incrassato. 7fch. 
Graphis serpentina ZIch. &ynops. Lich. p. 83.—Synops. Plant. «eq. 1. p. 15. 
Opegrapha serpentina ZA. JMeth. Lich. p. 29. Smith. Engl. Bot. t. 1555. 
Var. « litterella : crusta. alba; apotheciis confertis radiato-ramosis; ramis longioribus, 
divergentibus , subparallelis et decussantibus, subnudis. Ach. 
Graphis serpentina « ltterella Z1ch. Synops. p. 84. —Synops. Plant. eq. 1. p. 17. 
Crescit in cortice arborum prope Caripe, Cocollar et in monte Tumiriquiri (Provincia 
Cumanensi) ; item prope Chillo Quitensium , alt. 130. hex. 
