Page:Journal of botany, British and foreign, Volume 34 (1896).djvu/122

 102 LICHENES ANTILLARUM A W. K. EtLIOTT COLLECTI. indistinctus (infra apothecia gonidiis paucis protococcoideis in- structus). Apothecia adpressa, 0*3-0*15 millim. lata, depresso- convexa, immarginata, testaceo-pallida, ad ambitum pallidiora. Excipulum basi cyanescens. Hypothecium superius decoloratum, inferius pallido-olivaceum, KHO non reagens. Hymenium arete cohaBrens, circ. 0-045 millim. crassum, iodo intense persistenter cserulescens. Epithecium decoloratum. Paraphyses parcissime evolutsB (ad latera hymenii parce ramoso-connexae : in acido acetico visas), in hymenio ascis sterilibus compensatae. Asci clavato- ventricosi. Sporae Snae, elongatae, apicibus obtusis aut rotundatis, long. 0-018-0"021, crass. 0-003-0-004 millim., decolores, 6-7- septatae, baud aut parum constrictae. Ad folia arboris in Bon- homme Woods in St. Vincent (cum n. 351). Excipulum minute pseudo-parenchymaticum. Apothecia ceraceo-semipellucida. Colore hypothecii a Lecidea fuscatula (Miill. Arg. Lich. Beitr. n. 298) et Lecldea rufula (Miill. Arg. Lich. Beitr. n. 299) differt. 6. L. (Bilimbia) nana, sp. n. Thallus crustaceus, tenuis, ob- scure cinereo-glaucescens, sorediis minutis rotundatis glaucescenti- albidis adspersus, subcontinuus, sat aequalis, hypothallum fusco- nigricantem obducens. Apothecia increbra, 0'3-0'25 millim. lata, adpressa, disco planiusculo aut leviter convexiusculo, umbrino aut umbrino-testaceo, nudo, margine nigricante, tenuissimo evane- scenteve, integro. Excipulum parte exteriore albidum. Hypo- thecium fusco-nigricans, KHO non reagens. Hymenium circ. 0-035 millim. crassum, totum decoloratum, iodo persistenter caBrulescens. Paraphyses numerosae, filiformes, tenues, simplices, apice baud incrassatas. Asci clavati, circ. 0-008 millim. crassi, membrana tenui. Sporae 8na9, decolores, fusiformes aut ovoideo- fusiformes, apicibus obtusis, long. 0-009-0-007, crass. 0-003-0-0025 millim., rectas, 3-septatae. Supra Pyrenulam vetustam ad corticem arboris in Richmond Valley in St. Vincent (n. 273). Affinis est L. lividofuscescenti Nyl., at multo minor. Excipulum ex hyphis radian tibus conglutinatis formatum, cavitate cellularum angusta. 6. L. (Bilimbia) variabilis, sp. n. Thallus crustaceus, crassi- tudine mediocris (circ. 0-5 millim. aut tenuior), verruculosus et rugulosus rugosusque, subcontinuus aut areolato-diffractus, sordide glaucescens aut cinereo-glaucescens aut rarius glaucescenti-albidus, hypothallo albido parum evoluto. Apothecia 0-7-0-3 millim. lata, adpressa, numerosa crebraque, disco planiusculo aut leviter convexi- usculo, fusco- nigricante aut pallescente (in eodem specimine), nudo, margine tenui, integro, persistente, nigricante aut rarissime palles- cente (in apotheciis pallidis quoque vulgo nigricante aut rarissime pr.p. pallescente). Excipulum vulgo fusco-fuligineum aut violaceo- fuscescens, centre demum deficiens. Hypothecium dilute fuscescens aut fulvo-rufescens, tenue, KHO non reagens. Hymenium circ. 0-050-0-060 millim. crassum, parte superiore decoloratum aut ambitum versus dilutissime subfuscescens, iodo intense caerulescens et demum partim violascenti-obscuratum. Paraphyses sat arete aut sat laxe cohaerentes, 0*0015 millim. crassae, apice baud aut levissime incrassatae. Asci clavati. Sporae 8nie, decolores, fusi-