. Bulletin of the British Museum (Natural History) Botany. 208 D. L. HAWKSWORTH pallide brunnea, levia, 15-35 x2-5-4 Cellulae conidiogenae monoblasticae, integratae, subcylin- dricae. Conidia catenata, sicca, acrogena, ellipsoidea vel doliiformia, 1-septata, levia, pallidissime brunnea, 5-8(-9) x4-6(-7) ^.m. Typus: Dania, Sjaelland, Vridsl0selille, in Candelariella vitellina (HofTm.) Mull. Arg. (apothecia) ad lignum, , M. Skytte Christiansen (hb. Christiansen 552—holotypus!). Exsiccatae: Rasanen, Lich. Fenn. no. 347 (BM!, IMI 228050!, hb. Christiansen; sub Didymocy
. Bulletin of the British Museum (Natural History) Botany. 208 D. L. HAWKSWORTH pallide brunnea, levia, 15-35 x2-5-4 Cellulae conidiogenae monoblasticae, integratae, subcylin- dricae. Conidia catenata, sicca, acrogena, ellipsoidea vel doliiformia, 1-septata, levia, pallidissime brunnea, 5-8(-9) x4-6(-7) ^.m. Typus: Dania, Sjaelland, Vridsl0selille, in Candelariella vitellina (HofTm.) Mull. Arg. (apothecia) ad lignum, , M. Skytte Christiansen (hb. Christiansen 552—holotypus!). Exsiccatae: Rasanen, Lich. Fenn. no. 347 (BM!, IMI 228050!, hb. Christiansen; sub Didymocyrtis consimilis Vain.).. 10) Fig. 9 Bispora christiansenii (hb. Christiansen 552—holotype). Colonies discrete, arising in the tissues of the host, filling apothecia or associated with deforma- tions, dark brown to black; mycelium immersed, originating deep in the thallus, often amongst phycobiont cells, composed of subhyaline or very pale brown flexuose hyphae, hyphae thin- and smooth-walled, septate, often markedly constricted at the septa, mainly 2-5^4 urn wide, becoming inflated near algal cells. Conidiophores semimacronematous, mononematous, straight to flexuose, unbranched or branched sparsely either near the base or close to the apex, pale brown, smooth-walled, thicker-walled than the mycelial hyphae, septate, scarcely to markedly constricted at the septa, sometimes appearing almost torulose, 15-35 x 2-5-4 urn. Conidiogenous cells monoblastic, integrated, terminal, subcylindrical, pale brown, not clearly defined and the terminal cells in turn acting as conidiogenous cells. Conidia adhering in chains, dry, acrogenous, ellipsoid to doliiform, very pale brown, 1-septate, not or slightly constricted at the septum, the septum not broadened and thickened, smooth- and rather thin-walled, 5-8(-9)x4-6 urn. Hosts: Caloplaca citrina (Hoffm.) Th. Fr. (apothecia), C. cerina var. cyanolepra (DC.) Kickx (apothecia), Candelariella vitellina (Hoffm.) Mull. Arg. (apothecia), Lecanor
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