. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. 186 LICHENAUEI. [BAMALINi. Tribe IX. RAMALINEI Nyl. BuU. Soc. Linn. Normand. ser. 2, iv. (1870) p. 103. Thallua fruticulose, laciniose, or iilamentose, rounded or com- pressed, erect or pendulous, internally with woolly arachnoid me- dulla. Apothecia lecanorine, scutellate, terminal or lateral; spores Snae, 1-septate, suboblong, straight or slightly curved, colourless; paraphyses discrete. Spermogones immersed or slightly prominent; sterigmata subsimple or pa
. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. 186 LICHENAUEI. [BAMALINi. Tribe IX. RAMALINEI Nyl. BuU. Soc. Linn. Normand. ser. 2, iv. (1870) p. 103. Thallua fruticulose, laciniose, or iilamentose, rounded or com- pressed, erect or pendulous, internally with woolly arachnoid me- dulla. Apothecia lecanorine, scutellate, terminal or lateral; spores Snae, 1-septate, suboblong, straight or slightly curved, colourless; paraphyses discrete. Spermogones immersed or slightly prominent; sterigmata subsimple or pauci-articulate, with long anastomosing filaments intermixed. This tribe, under which Nylander in his former arrangement included Alectoria and Ecernia, is now, in its more limited acceptation, regarded by him as quite distinct, on account of mai'ked analytical ditferences, more especially of the thalamium, while the structure of the spermogones is entirely peculiar (vide Ramal. Monogi". I. c). The exotic genus Ramalea Nyl. externally resembling Eamalina, ought, from the type of the sper- matia, to be relegated to the Claduniei; while Dacti/linu and Dufourea, neither of which occur in Britain, are also excluded froji this tribj. 36. RAMALINA (1810) p. 122.—Thallus ciES- pitoso-fruticulose, foli- aceo - complanate or rounded, somewhat shining or subopaque, soft or rigid, solid or fistulose, ramoso-lacini- on both sides; medullary layer arachnoid, becoming sometimes very lax, cor- tical layer composed either of indistinct cells or of longitudinal con- glutinate filaments. Apothecia scattered, opaque, subconcolorous. Fig. 39. with thallus; hypothe- Eamalhm fmxinca AA^.-a. Longitudinal section cmm colourless; spores of (one side of) thallus, x200. A. Theca and paraphysis, x350. c. Spores, X500. d. Sec- tions of two spermogones, x30. c. Sterigmata and spermatia, X 500. (Also on the left a fragment of the anastomosing spermogonic fila- ments.) smal
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectlichens, bookyear1894
