Monographs Details: Grallatoria
Authority: Britton, Nathaniel L. & Millspaugh, Charles F. 1920. The Bahama Flora.
Description:Description - Thallus filiform, monosiphonous, the primary filaments dorso-ventrally organized, repent, uncorticated, the ramuli ("short branches") lateral and dorsal in origin, in threes or falsely fives and semi-verticillate, or in opposite pairs; opposite lateral ramuli commonly each forking in its basal cell, the two members simple or subsimple, few-celled, one of each pair ascending, the other deflexed and terminating in stelliform or avipedate haptera, giving the primary filaments the appearance of walking on stilts; dorsal ramuli comparatively stout, erect, repeatedly ramified, the branching somewhat secundly subdichotomous or occasionally subtrichotomous. Chromatophore in the younger cells an irregular subspiral band, in the older apparently consisting of numerous minute, more or less confluent granules. Sporangia on ramelli of the dorsal ramuli, usually tetrahedrally divided (tripartite). Other parts unknown.