Lecanactis byssacea (Weigel) Arnold

Kryptogamae exsiccatae.
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2051. Lecanactis byssacea.	; 04575W 1
Arn. in Flora, vol. LXVIJ (1884), p. 549 et in Bericht. Bayr. Botan. Gesellseh.
vol. I (1891), Anhang p. 95. — Sphaeria byssacea Weig., Observ. Botan. (1792), p. 42,
Tab. II, Fig. 9. — Arthonia byssacea Almqu. in Kgl. Svensk. Vet.-Akad. Hand., vol. XVII,
nr. 6 ([1879] 1880), p. 25.Lecidea biformis Flk. apud Hepp, Flecht. von Wurzburg
(1824), p. 62; Sprgl., System. Veget., vol. IV, pars I (1827), p. 260. — Arthonia bi-
formis Schaer., Lichen Helvetic. Spicil., sect. IV—V (i833), p. 245 et Enumer. Critic.
Lich. Europ. (1850), p. 243) Willey, Synops. Gen. Arrhonia (1890), p. 19; Nyl., Lich.
envir. Paris (1896), p. no. — Lecanactis biformis Körb., Syst. Lich. Germ. (1855),
p. 277 et Parerg. Lichen. (1861), p. 248; Krph. in Denkschr. Kgl. Bayr. Botan. Gesellseh.,
vol. IV, 2. Abteil. (1861), p. 261; Rieber, Zur Flechtfl. von Ehingen (1901), p. 27. —
Arthonia velata Nyl. in Actes Soc. Linn. Bordeaux, vol. XXI (1856), p. 411; Jatta, Syl-
,lage JLkjJjfa	'	?
Germania (Baden): ad truncos Quercuum in silva «Röttier Wal dl» prope Lörrach.
leg. G. Lettau.
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