. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. CALICIEI. 101 4. C. hyalineUa Nyl. Mem. Soc. Cherb. v. (1857) p. 93; Pyn. i. p. 164, t. V. f. 40.âThallus obsolete. Apotheoia small; stipes slender, hyaline, brownish above ; capitulum globose; sporal mass â white or pale-reddish; spores minute, 0,0025-0,004 mm. in dia- meter.âCromb. Lich. Brit. p. 14; Leight. Lich. Fl. p. 47, ed. 3, p. 46. Occasionally there are traces of a very thin, whitish, and leprose thallus, hut it is doubtful if this be pr
. A monograph of lichens found in Britain; being a descriptive catalogue of the species in the herbarium of the British Museum. Lichens. CALICIEI. 101 4. C. hyalineUa Nyl. Mem. Soc. Cherb. v. (1857) p. 93; Pyn. i. p. 164, t. V. f. 40.âThallus obsolete. Apotheoia small; stipes slender, hyaline, brownish above ; capitulum globose; sporal mass â white or pale-reddish; spores minute, 0,0025-0,004 mm. in dia- meter.âCromb. Lich. Brit. p. 14; Leight. Lich. Fl. p. 47, ed. 3, p. 46. Occasionally there are traces of a very thin, whitish, and leprose thallus, hut it is doubtful if this be proper. It is closely allied to C. pallida, hut differs in the more slender stipes, and in the spores being at least half the size. Hah. On indurated stumps of trees in wooded upland districts.â Distr. Found only very sparingly in N. England.âB. M. Brantsdale, Yorkshire. 24. TRACHYLIA Pr. Vet. Ak. Handl. 1821, p. 324, pro parte; Nvl. Mem. Soc. Cherb. iii. (1855) p. 167; Lich. Scand. p. 44 (note).âThallus granulose, or rarely subleprose, or wanting. Apothecia sessile, cupu- liform, open, black, with thin pro- per margin ; sporal mass more or less accumulated, black ; spores 1- septate, rarelj' pluri-septate and irregularly divided, ellipsoid, black- ish or brownish-black ; hymenial gelatine scanty and scarcely tinged with iodine. Spermogones with ob- long or ellipsoid spermatia. Distinguished from the allied genera by the apothecia being constantly sessile, lecideiform, and the ellipsoid spores. As already noted under Calicium , forms are not wanting, and Trachylia may not be generically distinct. The gonidia are 4>o, rcr- d c Fig. 27. Trachylia tympanella Fr.âa. Ver- tical section of an apothecium, X 30. b. Theca (with young spores) and a paraph j'ais, X 350. c. Older (free) .spores, X 500. d. Vertical section of a spermo- gonium, X 30. e. Sterigmata and spermatia, 500. 1. T. tigillaris Fr. Sum. Veg. (1846) p. 282.âThallus effus
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectlichens, bookyear1894
