454 REV. W. A. LEIGHTON ON AMAZONIAN AND ANDINE LICHENS. 
187. Gr. runsurans, Nyl. MS.; thallus pallide fuscus, diffusus, tenuis, leevigatus, mar- 
gine brunneo aquoso limitatus ; lirellæ graciles, angustæ, valde elongatæ, e centro 
divergentes, radiato-dendriticæ, ramosissimæ, apicibus obtusis, intus incolores; epi- 
thecio plano, nigro-fusco, margine thallode tenui erassiusculo ascendente cincto; 
spore 4, oblongæ, uno apice angustiores, 3-septate, fuscescentes, parve. (Nos. 288, 
338.) 
Ad corticem Inge, San Carlos; Rio Negro. 
Ad stirpem Medusularum pertinens. 
Tas. LVI. fig. 15, spora aucta 1200. 
188. GR. FURFURACEA, Leight.; thallus galactino-albidus, glaucescens, effusus, tenuis, 
membranaceus, lævigatus, subnitidiusculus, at circa lirellas recedens et ibidem sore- 
diatus aut furfuraceus ; lirellæ simplices, oblongæ et oblongo-lineares, apicibus ob- 
tusis, erumpentes, albo furfure suffusæ, intus incolores, epithecio rimiformi incon- | 
spicuo subhiascente; hypothecium incolor; spore 8, incolores, parve, ellipsoideæ, | 
4-loculares, iodo ] ti-ol tæ; paraphyses confertæ, inconspicuæ. (No.303). | 
San Carlos. 
Ad stirpem Fissurinarum pertinens. 
Tas. LVI. fig. 16, spora aucta 1200. 
189. GR. PLANETOCARPA, Leight.; thallus galactino-albidus, crustaceus, crassiusculus, 
levigatus, lineà fusco-nigrä limitatus; lirelle erumpentes, prominentes, sessiles, 
gracillimz, valde elongate, undulato-curvate, subgyrose et inter se confluentes ; 
epithecio rimiformi; hypothecio carbonaceo, integro ; sporz 8, incolores, minime, 
ellipsoidez, 4-loculares, iodo cærulescentes ; paraphyses valide, distinctæ. (No. 340.) 
San Carlos. 
Ad stirpem Graphidis scriptæ pertinens. 
Tas. LVI. fig. 17, spora aucta 1200. 
190. GR. onvzorpEs, Leight.; thallus sordide olivaceus, crassiusculus, rimosus; lirella 
sparse, simpliees, oblongæ aut elongato-oblongæ, leviter flexuosæ, prominentes, 
tumidæ, membrana crassa albo-pruinosä vestitæ; epithecio profunde impresso, com 
colore; margine tumido, crassissimo, albo, plus minusve longitudinaliter striato, 
involvente perithecium laterale crassum fusco-nigrum ; hypothecium infra incolor; 
spore 8, incolores, parvæ, oblongæ, 3-5-loculosæ, loculis nunc integris nune nucleo- 
latis, iodo subvinose lutescentes ; paraphyses confertæ, validæ, distinctæ. (No. 291). 
Santarem. 
Ad stirpem Graphidis frumentarie pertinens. 
Dr. Nylander in litt. says, Bonne nouvelle espèce; elle est voisine de Y Afselii, m2? 
yd des rapports avec les Gr. ériphora, Nyl. (N. Gran. 2nd ed. p. 133), et @r- fru 
| taria, Fee.” 
Tas. LVI. fig. 18, spora aucta 1200. 
