The thallus grows upright and consists of closely interwoven, stiff, mesh-like blades that form tufted structures at their tips. The branching pattern is opposite, occurring in a single plane and repeatedly branching to create an open, mesh-like blade. Along a central vein, there are typically 4-6 pairs of opposite branchlets towards the tip. The cells are narrowest at the base and progressively decrease in diameter with each division, with rounded cell tips that connect to neighboring cells through specialized hapteroid cells. The chloroplasts have a reticulated appearance. The stalk is unbranched most of the time, and rhizoids are well developed. These plants are light green to yellow-green in color.