LIOHENES ANTILLARUM A W. R. ELLIOTT OOLLEOTI. 8^ Trib. 3. Lecanore^. 1. Lecanora. 1. L. SUBFUSCA (L.) Ach. var. chlarotera (Nyl.) Wain. Etud. Br^s. i. 77. Ad corticem arboris in Emsol Estate in Dominica (n. 537). 2. L. cinereocarnea (Eschw.) Wain. I. c. 80. Ad corticem arboris prope Kingstown in St. Vincent. 8. L. stramineoalbida, sp.n. Thallus crustaceus, effusus, sat tenuis, verruculoso-inaequalis, albidus aut sordide albidus, esoredi- atus, KHO lutescens. Apothecia mediocria, circ. 1-1'5 (-0*7) millim. lata, adpressa, disco piano, stramineo, nudo, CaClgOg non reagente, margine tenui, subcrenulato aut verruculoso-ruguloso, discum plus minusve superante, thallo concolore. Hypothecium albidum vel albido-pallescens, inferne pallescens et passim ful- vescens, inferne KHO fulvorubescens. Hymenium iodo persistenter cserulescens. Sporse 8nae, ellipsoideae, simplices, decolores, long. 0'015-0'013, crass. 0-009-0-006 millim. In stirpem L. suhfusca pertinet, disco stramineo, neque pallido, dignota. Ad corticem arboris in Richmond Valley in St. Vincent (n. 289). — Apothecia numerosa et sat crebra, demum saepe subangulosa. 4. L. prosecha Ach. Lich. Univ. (1810) 846 (L. subfusca v. pro- secha Nyl. Addit. Nov. Granat. 548 ; Stizenb. De Lecan. subfusca^ 7). Secundum specimen orig. ex ins. Bartholomei in herb. Ach. ad Aspicilias, neque ad stirpem L. siibfuscm pertinet. Omnino similis ab Elliott abundanter lecta est. Thallus crustaceus, crassitudine mediocris (circ. 0*5 millim.), subcontinuus, rimulosus aut areolato- rimulosus, stramineo-glaucescens aut rarius glaucescenti-albidus, KHO lutescens et demum fulvescens, CaClgOg non reagens, iodo non reagens,hypothallo caeruleonigricante saepe passim anguste limitatus. Apothecia parva, 0'7-0-4 millim. lata, thallo immersa, immarginata, disco piano aut demum convexiusculo, nigro aut atro-sanguineo aut sanguineo, nudo, thallum aequante aut demum leviter superante. Epithecium rubricoso-fuligineum aut rubricosum, KHO non reagens. Hypothecium pallidum. Sporae 8n8B, simplices, decolores, oblongae aut ellipsoideae, long. 0-014-0-009, crass. 0'006-0'005 millim. Osti- olum conceptaculi pycnoconidiorum macula caeruleofuliginea minuta circumdata. Pycnoconidia filiformi-cylindrica, bene curvata, long. 0-022-0-018, crass. 0-0007 millim. — Lecanora subimmersa (Fee) Wain. ;6tud. Bres. i. (1890), 98, huic speciei proxime est affinis, thallo caesio-albido aut albido, neque stramineo-glaucescente, ab ea differens. Diversa est L. subimmersa Miill. Arg. Lich. Exot. ii. (1893), 124. f. granulifera Wain. Thallus passim sorediis irregularibus granulosis instructus. Apothecia nigra. Supra rupem ad SoufPri^re (n. 138) et Bath Estate (n. 140) in Dominica et ad Fort Charlotte in St. Vincent (n. 288). Ad banc formam L. prosecha Ach. in herb. Ach. pertinet. — Hymenium iodo persistenter caerulescens. Hypo- thallus albidus, demum fulvescens et KHO violascens. Var. rubescens Wain. Thallus sorediis destitutus. Apothecia P3,nguineo-rubescentia aut pro parte atrosanguinea. In f. gramilu P 2
