80 A.-M. HUE. 



Thallusalbusvelglaucescenti-a!bidus,orbicularis,plagas 2-8 cent, latasformans, appres- 

 sus, sat tenuis, opacus,fragilis, anguste laciniatus, K supra cum sorediis flavens; latinise 

 0,5-1,5 mm. late pluries et irregulariter lacinulalse, lacinulis in peripheria apice inlegris 

 vel subcrenatis, plerumque discretis, aliquando imbricatis, in centro confluentibus crus- 

 tamque efficientibus ; supra rare- applanala?, ssepe convexa? aut longitudinal 1er plicatee, 

 peripheriam versus lœvigatœ atque in caeteris partibus sorediis csesiis vel albidis, rotundis, 

 tenuissime granulosis, sparsis aut in centro et raro confluentibus ornatse ; intus albse ; 

 subtus nigrse atque rhizinis paucis et nigrescenlibus ornatae. Cortex superior20 [i. latus, 

 albidus et in zona exteriori angustaque corpusculis obsitus, pseudoparenchymaticus, ex 

 hyphis superficiei perpendicularibus, 3-4 septatis, cellulas 3-4 u. lalas, oblongas, pariele 

 tenui formantibus conslans. Gonidia 6-8 p. lala in strato passim interrupto, et tune hyphae 

 septatae inter ea descendentes, sub cortice sita. Hyphae medullares 2-4 ;i.crassa3, superficiei 

 parallelee, parum ramosee atque salis stricte implexœ. Cortex inferior 16-20 u. latus, 

 fusco-niger ex hyphis superficiei parallelis et passim obliquis stricte coalitis constans. 

 Apothecia inter soredia sparsa etsessilia, 0,6-1,5 mm. lata, margine primum integro et 

 demum crenulato atque disco nigro nudo (raro pruinoso Wain. loc. citât.) ornata. In 

 excipulo cortex in margine 10, et in basi 40 jj. latus, pseudoparenchymaticus et corlici 

 superiori similis, sed cellulas paulo majores praebens ; gonidia sub cortice et magis nume- 

 rosa in margine ; epithecium nigrescens; hypothecium fusco-nigrum et crassum ; para- 

 physes satis discrets, 110 y. alta?, 1,5 p. latse et apice leviter incrassatse, 3 p. metientes; 

 sporoe 8™, nigrescentes, 1-seplala?, cum loculis sat parvis, 16-20, rarius 26 ii longae et 

 6-8, rarius 10 u. latae. Gelatina hymenialis iodo persistenter caerulescens. Sperino- 

 gonia lhallo innala, apice nigra et intus albida; spermatia recta 3-4 y. longa et 0,6- 

 0,7 [a longa; sterigmata articulata. 



— F. isidiophora Nyl. in Flora 1867, p. 3, Mail. Arg. Lich. Afric. occident, p. 33, 

 Zolling. Plant, javan. n. 1123 pr. p ; Pli. obsessa var. hypochrysa Krempelh. Neuer 

 Beitr. sur Afric. Flora n. 22, teste Mail. Arg. Lich. Beitr. n. 936. 



In Africa : 1. in ins. Borbonialegit fr. Rodriguez, anno 1889; sterilis. — 2. In ins. Mada- 

 gascaria, in Ambositra, legit idem et eodem anno. 



In America : 1. in Louisiana legit abb. Langlois, Pointe à la Hache, ad arborem anno- 

 sam, n. 65, septembri 1884 ; fertilis. — 2. In ins. Martinica legit R. P. Duss. — 3. In Bra- 

 silia legit Azevedo Sampaio, anno 1893; sterilis. 



Thallus sicut in forma typica, sed supra isidio parvo et parum elevato, peripheriam 

 versus in glomerulis parvis, rotundis atque sparsis at in centro confluentibus ornatus. 

 Glomeruli isti soredia in isidium mutata videntur. Apothecia parva et margine 

 integro. 



— Var. œgialita Hue; Parmelia œgialita Ach. Method. Lich. (1803) p. 192; Leca- 

 nora cegialita Ach. Lichenogr. nniv. (1810) p. 423 et Synops. Lich. p. 179; Physcia 

 œgialita Nyl. Expos. Lich. Novœ Caled. p. 12 in notula et apud Hue Lich. exot. n. 1006, 

 Wain. Étude Lich. Bre's. I, p. 151 et Lich. brasiliens. exsicc. n. 148, Mail. Arg. Lich. 

 Miyosh. pp. 123 et 131 ; Parmelia confluens El. Fr. System. Orb. veget. (1825) p. 430 ; 

 Ph. confluens Nyl. Synops. Lich. I, p. 430; Linds. Mem. Spermog. filament. Lich. 

 p. 246; Lecanora Ascensionis Ach. Synops. Lich. p. 179, leste cel. Nylander; Physcia 

 meïanocarpa Mail. Arg. Lich. Paraguay. (1888) p. 6, teste cl. Wainio. 



In herb. Mus. paris, exsiccala : Herb. Ind.-Orient. Hooker f. et Thomson, n. 1419, 

 Zolling. Plant, javan. n. 1123 pr. p., Wright Lich. Cuba n. 91 pr. p. In eodem herbario 

 specimina : ex Asia, e Pondichery, legit Gaudichaud; ex herb. Junghuhn. In America e 

 Texas, ex herb. Tuck. Ex Oceania : e Nova Caledonia, legerunt Thiebaut et Vieillard, 

 n. 1809; e Noukahiva. 



