Chiodecton bracei Riddle
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Authority
Britton, Nathaniel L. & Millspaugh, Charles F. 1920. The Bahama Flora.
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Family
Roccellaceae
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Scientific Name
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Description
Species Description - Thallus epilithicus crustaceus uniformis subdeterminatus maculas 3-15 mm. diam. formans haud linea nigra limitatus, argillaceus aut albus, in crassitudine mediocris, crebre contextus continuus laevigatus undulatus. Gonidia chroolepoidea. Stroma nulla. Apothecia dispersa aut rarius aggregata thallo immersa punctiformes aut difformia aut partim elongata, 0.1-0.5 mm. longa, simplicia, disco sicco nigro madefaeto badio, nudo piano superfkiem thallo subaequante, margine tenuissime spurie thallino aut margine evanescente; epithecio fuscescente; hymenio et hypothecio incolore. Paraphyses crassiusculae ramoso-connexae. Asci clavati 8-spori. Sporae incolores fusiformes 4-loculares loculis cylindricis aequalibus, 14-20 X 4 µ.
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Discussion
On limestone, New Providence (Brace, June 16, 1!>18, 951S, type). Also, Watling's Island, vicinity of Cockburn Town (Britton and Millspaugh. GIZSa). Chiodecton Bracei belongs to the section Entcrographa. It differs from C. rufescens Wainio (Journ. Bot. 34: 262. 1896) in having simple apothecia which are more often punctate or difform than elongated. I take pleasure in naming this species in honor of Mr. Brace, whose collections have greatly extended our knowledge of the lichens of the Bahamas. 2