Page:Journal of botany, British and foreign, Volume 34 (1896).djvu/87

I LIOHENES ANTILLARUM A W. E. ELLIOTT COLLECTI. 67 leviter angusteqne impresso-concaviuscula, demum basi abriipta aut leviter constricfa, laevigata ant leviter verrucosa, thallo con- coloria et apice glaucescente et disco nigricante, apothecia 1-8 continentia, discis pseudostroma aequantibiis aut leviter impressis, sparsis confertisve. Sporae typice binae, long. circ. 0060-0'080, crass. 0-026-0-030 millim., halone nullo, membrana 0-003-0-004 millim. crassa, intus IsBvi, in eodem apotliecio pr. p. solitariae et long. 0-100 millim. et crass. 0*040 millim., intus striis transversali- bus undulatsD et membrana intus incrassata. Ad corticem arboris in Kingstown in St. Vincent (n. 252). — Discus KHO rubescens. Asci iodo intense caerulescentes. Habitu subsimilis est Pertusaria Sommerfeltii. A P. leioplaca v. dispora Miill. Arg. Licb. Neo-caled. (1893), 5, jam reactione tballi et sporis constanter paucis differt. P. LEioPLACELLA Njl. ; Wain. Etud. Bres. i. 111. Ad corticem arboris in St. Vincent (n. 452). Sporae 8nse, partim distichae, long. 0'045-0-060, crass. 0026-0-030 millim., membranae stratis duobus distinctis et modice incrassatis, striis nullis. Asci ventricosi. Pseudostromata apothecia solitaria continentia, apice umbonato, luteo. Trib. 5. THELoscmsTEiE. 1. Placodium. 1. P. SUBFULGENS (Nyl.) Wain. Lecanora Nyl. Fl. 1876, 510; Wright, Lich. Cub. ser. ii. n. 50. Ad lapides in Fort Charlotte in St. Vincent (cum Buellia parachroa et Lecidea vayiahili in n. 259). Pr. p. in f. dispersam transit. Hypot^iallus caBruleo-nigricans. f. dispersa Wain. Thallo disperse areolato, areolis parvulis, circ. 0'2-0-3 millim. latis, subintegris aut parum crenatis, hypo- thallo tenui caeruleo-nigricante. In rupe ad Bath Estate in Dominica (n. 144), una cum Placodio diplacioide et Lecanora pro- secha. P. Mulleri Wain. Etud. Bres. i. 120, areolis thalli majori- bus crenulatisque ab hac forma dififert. 2. P. aurantiacum (Lightf.) Tuck. Gen. Lich. 106. *P. Bassi-e (Ach.) Wain. Lepraria Bassia (Willd.) Ach. Meth. Lich. (1803), 5. Isidium Bassia Ach. Lich. Univ. (1810) 579 (secund. specim. orig. e Malabaria in herb. Ach.). Lecanora epiphora Tayl. in Hook. Journ. Bot. 1847, 159 (e St. Vincent). Callopisma aurantiacum v. salicinum b. epipliorum Miill. Arg. Lich. Beitr. (1888), n. 1899. Lecanora aurantiaca v. isidiosella Cromb. Lich. Ins. Eodrigu. (1877), 437 (secund. descr.). Thallus citrinus aut partim albidus, isidiis brevibus tenuissimis citrinis, KHO violascentibus creberrime aut parcissime instructus. Sporae 8nae, circ. 0-016-0-018 millim. longaB et 0-007 millim. crassae, septa crassa. Habitu valde variabilis in P. aurantiacum sensim transit. Ad corticem arborum in Kings- town in St. Vincent (n. 254). 3. P. diplacioides, sp. n. Thallus crustaceus, effusus, sat tenuis aut crassitudiue mediocris subdisperse areolatus aut partim subcontinuus laevigatus et nitidiusculus, demum sorediis farinosis passim instructus, glaucescenti-stramineus aut albido-glaucescens, KHO lutescens, hypothallo nigro inter areolas et ad ambitum visibili. Apothecia increbra et saepe parcius evoluta, thallo innata F 2