. British fungus-flora. A classified text-book of mycology. Fungi -- Great Britain. HELVELLA. 465 In pine woods, among moss, &c. Specimen from Fries examined. The present species has by some authorities been placed in the genus Peziza, used in the broader sense, on account of the concave or cup-shaped form of the young ascophore, but the entire structure is that of Helvetia. Helvella atra. Konig, Zoega. Fl. IsL, p. 20; Cke., Mycogr., fig. 167; Phil., Brit Disc, p. 1*5; Sacc, Syll., viii. n. 81. Solitary, sooty-black or black with a purple shade; pileus droop- ing on opposite sides, depress
. British fungus-flora. A classified text-book of mycology. Fungi -- Great Britain. HELVELLA. 465 In pine woods, among moss, &c. Specimen from Fries examined. The present species has by some authorities been placed in the genus Peziza, used in the broader sense, on account of the concave or cup-shaped form of the young ascophore, but the entire structure is that of Helvetia. Helvella atra. Konig, Zoega. Fl. IsL, p. 20; Cke., Mycogr., fig. 167; Phil., Brit Disc, p. 1*5; Sacc, Syll., viii. n. 81. Solitary, sooty-black or black with a purple shade; pileus droop- ing on opposite sides, depressed at the centre, usually free from the stem at the sides but close to it, thin, dingy grey when dry, even underneath and minutely furfu- raceous, dingy grey, l*5-2'5 cm. across; margin inclined to turn upwards ; stem 3-5 cm. long, about !- mm. thick, often slightly thick- ened and more or less lacunose near the base, which is greyish-olive, remainder black, furfuraceo-villose, stuffed ; hypothecium and excipu- lum formed of hyaline, densely interwoven hyphae which pass into a large celled, parenchymatous cortex, the external cells of which run out in chains, clusters of which Helvella helvelloides, Mass. Section through the ascophore; the hypothecium (1) is formed of densely interwoven branched septate hyphae; at the central portion the texture is looser, and changes at the cortex (2) into a parenchyma of polygonal cells, many of which run out into hairs forming the scurfy exterior. VOL. 2 H. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Massee, George, 1850-1917. London, New York, G. Bell & sons
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