Page:Journal of botany, British and foreign, Volume 34 (1896).djvu/47

 31 LICHENES ANTILLAUUM A W. R. ELLIOTT COLLECTI.f ExpoNiT Edv. a. Wainio. Annis 1891 et 1892 eel. W. R. Elliott etiam licbenes in insulis DominiccTe et Sti. Vincenti collegit. Haec coUectio, 154 species complectens, quarum 50 sunt novae, hie exponitur. I. DISCOLICHENES. A. Cyclocarpe^. Trib. 1. Parmelie^. 1. USNEA. 1. U. barbata (L.) Ach. - U. florida (L.) Wain. Etud. Bres. i. 3. Var. comosa (Ach.) Wain. I.e. In Girondelle (2000 ped.) in Dominica et in St. Andrews (2500 ped.) in St. Vincent. Var. PERPLEXANs Wain. I. c. 5. In St. Andrews (2500 ped.) in St. Vincent. Var. XANTHOPOGA (Nyl.) Wain. Thallus erectus aut suberectus, laBvigatus aut in eodem specimine interdum passim carfcilagineo- verruculosus, saepe apicem versus leviter sorediosus, b re vis aut longitudine mediocris (circ. 12-70 millim.), rigidiusculus, flavescenti- stramineus. Stratum myelohyphicum crebre aut sat crebre con- textum, KHO lutescens, I non reagens. U. xanthopoga Nyl. Lich. Campb. (1876) 2. U. harhata v. xanthopoga Miill. Arg. Lich. Beitr. (1889), n. 1470 pr. p. — F. subhirta Wain. Thallus brevis (12-40 millim.), apicem versus creberrime ramosus, pro parte demum ramis adventitiis aut passim etiam ramis soredialibus (spinulae- formibus) plus minus instructus aut iis destitutus, strato myelo- hypliico crebro. Thallo pro parte Isevigato et minus spinuloso a var. hirta (Hofftn.) Fr. differt. Ad parietem ligneum in Girondelle (2000 ped.) in Dominica (n. 495). — F. molUuscula Wain. Thallus brevis aut longitudine mediocris (40-70 millim.), apicem versus parcius ramosus, ramis adventitiis et soredialibus destitutus, strato myelohyphico sat crebre contexto. A var. moUi Wain. Etud. Bres. i. 4, thallo pro parte laevigato, apicem versus soredioso et strato myelohyphico crebrius contexto differt. Ad corticem arboris in monte St. Andrews (2500 ped.) in St. Vincent (n. 16^). 2. Ramalina. 1. R. GRACILIS (Pers.) Nyl. *-R. Antillanim Wain. Thallo breviore, magis stramineo, apicibus flagelliformibus brevioribus aut vix flagellato-attenuatis et apotheciis minus pruinosis a E. gracili (Wain. Etud. Bres. i. 17) differt. Thallus circ. 10-80 millim.' altus, erectus, angulato-teretiusculus, fruticuloso-ramosus, sensim attenu- atus, ramis primariis 0-3-1 millim. crassis, longitudinaliter parallels canaliculato-striatus, esorediatus, stramineus aut apicibus passim paululum nigricantibus, medulla stuppea, KHO non reagente, ramis patentibus. Apothecia parva aut sat parva, 1-2*5 millim. lata, t Mr. Elliott made this collection on behalf of the West India Natural History Exploration Committee.