122 APSMPSEIUIE 
inferior vero 40-50 L lalus ; uterque similis, corpusculis flavidis repletus et pseudoparen- 
chymaticus, cellulis in basi 8 & et in apice 5 p latis; gonidia 9-14 plata sub cortice supe- 
riore: medulla densa, nuda, ex hyphis 1,5-2 & crassis constans; sterilis. (Apothecia 
7-14 mm. lala, cupuliformia, marginalia, subpedicellala, excipulo corrugato-plicato, 
disco badio-spadiceo, vel fusco nigricanti prædita ; sporæ 8", hyalinæ, simplices 
0,11-16 p longæ et 7-9 y crassæ. Spermogonia marginalia concepiaculis fusconigris : 
spermatia 6-7 & longa et vix 1 ÿ lata; sterigmata articulata, Nyl. Synops. Lich. 1, p.375.) 
Species republicæ Mexicanæ, Peruviæ et Chili propria. 
TRIBUS XVIII. — PARMELIEÆ. 
Thallus foliaceus, prostratus aut partim subascendens, late lobatus aut anguste 
laciniatus, dorsiventralis, id est utraque facie dissimilis ejusque elementa conslilutiva in 
stralis superposilis disposila. Uterque cortex, superior et inferior, ex hyphis superficiei 
perpendicularibus, indistinctis, rarius distinctis, constricte septatis et lateraliter ramosis, 
ramis anastomosantibus, rarius omnino pseudoparenchymaticis constituti. Gonidia 
protococcoidea sub corlice superiore vigentia. Medulla ex hyphis superficiei parallelis 
constans. Cortex inferior niger, brunneus seu albidus, eodem modo ac cortex superior 
formatus, rhizinis vulgo aut rarius haustleriis substrato affixus. Apothecia supra 
thallum sparsa excipulum corticatum el gonidia præbenlia ; paraphyses articulatæ; sporæ 
hyalinæ et simplices. Spermogonia supra thallum sparsa (genus Parmelia) vel in 
spioulis aut in papillis lateralibus inelusa (genus Platysma). 
Genus XXX. — PARMELIA Ach. 
Method. Lich. (1803), p.153 pr. p., Lichenogr. univ., pp. 89 et 456 pr. p., et Synops. Lich., 
p.195 pr. p.; Eschw., System. Lich. (1824), p. 20 ; EL. Fries, Lichenogr. europ. reform. 
(4831), p.56 pr. p.,; D. N.in Giorn. Botan. Ttal., 1847, p. 189; Mass., Memor. lichenograf. 
(1853), p. 48; Nyl., Æssai nouv. classif. Lich., 1854, p. 13, et 4855, p. 174 pr. p. Synops. 
Lich.1, p.375, apud Hue, Addend. Lichenogr. europ., p. 39, et Lich. exot., p. T1 pro max. 
p.; Th. Fries, Gener. Heterolich. (1861), p. 58, et Lichenogr. scand., p.111; Stüizenb., Beitr. 
Flechtensystem. (4862), p. 174 (excel. Everniopsi); Müll. Arg., Princip. classif. Lich. 
(Genève (1862), p. 33, et Conspect. Lich. N. Zeland., p.10; Tuck., Gener. Lich. (1872), p.20, 
et Synops. N. Americ. Lich. X, p. 52; Lindsay, Mem. on the spermogon. of filament. Lich. 
tab. XI, XII et XIII, fig. 8-12; Zobaria Hoffm. Deutschl. Flora 11 (1795), p. 138 pr. p. DC. 
Fior. fr. (4815), p. 402 pr. minor. p.; /mbricaria DC. ibid., p.385 pr. p. Koerb., System. 
Lich. German, (1855), p. 68. 
Thallus albidus, glaucescens, flavens, brunneus aut niger, foliaceus, late lobatus ve 
anguste laciniatus, depressus et sæpe apicibus ascendens, velrarius erectus, dorsiventralis. 
In cortice superiore vulgo corpusculis repleto, hyphæ superficiei perpendiculares, sæpius 
indislinctæ, constricte septatæ et ramosæ, ramis anastomosantibus retemque maculis 
parvis aut magnis et imparibus formantes. Gonidia prolocoecoidea in strato continuo aut 
interruplo sub cortice superiore posita. Medulla ex hyphis superficiei parallelis ramosisque 
conslans, nuda in subgenere Wenegazzia, materia albida vel flavida obtecta in subgenere 
Euparmelia, vel adhuc stratum crassum ex hyphis anastomosantibus conslitutum in 
parte thalli infera formans in subgenere Anzia. Cortex inferior cortiei superiori dissimilis 
sed eodem modo formatus, niger, brunneus aut raro albidus, substrato in subgenere 
