Article
Unique expression of a sporophytic character on the gametophytes of notholaenid ferns (Pteridaceae).
American journal of botany - 1 Jun 2012
Johnson Anne K, Rothfels Carl J, Windham Michael D, Pryer Kathleen M
Abstract excerpt
PREMISE OF THE STUDY: Not all ferns grow in moist, shaded habitats; some lineages thrive in exposed, seasonally dry environments. Notholaenids are a clade of xeric-adapted ferns commonly characterized by the presence of a waxy exudate, called farina, on the undersides of their leaves. Although some other lineages of cheilanthoid ferns also have farinose sporophytes, previous studies suggested that notholaenids...
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