Monographs Details: Calypogeia
Authority: Fulford, Margaret H. 1968. Manual of the leafy Hepaticae of Latin America--Part III. Mem. New York Bot. Gard. 11: 277-392.
Scientific Name:Calypogeia
Description:Genus Description - Plants prostrate, green to whitish, in mats or scattered among other bryophytes; stems irregularly branched, the branches ventral-intercalary, axillary, leafy, or rarely flagelliform, or short, male or female; stem in transverse section of many more or less similar cells, the single cortical layer often in part slightly larger or smaller or with thicker walls than the medulla. Rhizoids long, in tufts from small cells of the lower part of some underleaves. Line of leaf insertion oblique, often nearly longitudinal, the leaves incubous. Leaves symmetric or asymmetric, widely spreading to ascendant or falcate, often long decurrent, often bordered, the apex broad-rounded, acute, apiculate or shortly bifid; leaf cells subquadrate, rectangular or hexangular, the walls uniformly thickened or with conspicuous trigones. Underleaves large, broader than the stem, or very small, ovate to orbicular or reniform, entire or bifid, bifid with a lateral tooth or bisbifid. Plants dioicous. Male inflorescence a short ventral branch, solitary or in pairs or threes, catkin-like, pale to hyaline, the bracts small, bifid, concave. Female inflorescence a short ventral branch, the bracts and bracteoles scale-like. Perigynium fleshy, pendant, cylindrical, of the Calypogeia type with scales at the mouth. Sporophyte within the perigynium until maturity, the capsule cylindrical, the valves slender, spirally twisted, the seta (where known) in transverse section of 16 outer cells surrounding about 16 similar cells. G e m m a e on erect, radial, small-leaved shoots, green to hyaline, 1- or 2-celled.

Discussion:Cincinnulus Dumortier, Comm. Bot. 113. 1822. Kantia S.F. Gray corr. Carrington, Trans. Proc. Bot. Soc. Edinb. 10: 308. 1870. Type species: Calypogeia fissa (L.) Raddi. [Northern Hemisphere]