Flora of the Hawaiian Islands
General Information
DistributionA genus of ca. 185 species mostly in the Old World, the great majority in Malesia.
Terrestrial or rarely epiphytic; rhizome erect, or prostrate and short-or rarely long-creeping; scales narrow, with both marginal and superficial acicular hairs.
Fronds 1-pinnate; pinnae ± deeply lobed, with 2–12 basal pairs abruptly, or in a few species progressively much-reduced; aerophores at bases of pinnae often swollen on living fronds; lower blade surface between veins not pustular when dried, usually bearing acicular hairs, upper surface glabrous or rarely with antrorse acicular hairs, brownish orange or yellow often opaque sessile spherical glands usually present on the lower surface (lacking on C. invisus), at least 1 pair of basal veins anastomosing, or rarely meeting at, or just beyond, the sinus membrane.
Sori round, or rarely elongate or intermediate in shape, indusiate or rarely exindusiate; indusium bearing sessile glands like those of the lamina and/or acicular or gland-tipped hairs; sporangia commonly bearing a (sub)sessile spherical gland or rarely short setae near the annulus and a gland-tipped hair on the stalk.
Spores mostly pale brown, echinate or winged.
n = 36
Following Smith et al. (2006) we include Amphineuron, Chingia, Christella, Plesiorneuron, and Sphaerostephanos under Cyclosorus.
David Lorence, co-author K. R. Wood