Reproductive structures of the seagrass, Halodule wrightii Ascherson (shoal grass) are cryptic and ephemeral, but were found on several occasions at several sites over more than a decade in the subtropical Laguna Madre (USA). Structures align with descriptions for H. wrightii. Male, but no female flowers were found, but the numerous fruit-bearing shoots imply the occurrence of pistillate flowers. Mean seed bank density was 890 seeds m-2 (1900–5200 m-2). Sexual reproduction in H. wrightii is more common than previously believed and the seed bank reserve may contribute to its ecological role as a colonizer of disturbed sediments.
Kowalski, Joseph L. and DeYoe, Hudson R.. "Flowering and seed production in the subtropical seagrass, Halodule wrightii (shoal grass)" Botanica Marina, vol. 59, no. 2-3, 2016, pp. 193-199. https://doi.org/10.1515/bot-2015-0099