S. A. Kortepeter 1996: Lichen speciation in the section Cocciferae: Cladonia incrassata and Cladonia cristatella. - Journal of Undergraduate Sciences3: 71-73. [RLL List # 214 / Rec.# 31078] Keywords: CLADONIA/ SECTION COCCIFERAE/ SYSTEMATICS/ EASTERN UNITED STATES
Abstract: ["A chemical intermediate was found between C. cristatella and C. incrassata. This intermediate is perhaps Tuckerman's C. cristatella var. paludicola, or, alternatively a distinct species related to both."]