The only family of the order, containing only the genus Isoëtes. Leaves terete, or flattened above, with a ligule near the base and a sporangium sunk in a cavity in the leaf below the ligule Usually with annual grass–like leaves arising in a tuft from a flattened corm–like axis; corm 3–4–lobed with black roots arising from the furrows between the lobes Herbaceous perennial aquatics or plants of wet places Stem short, corm-like, 2–4-lobed or unlobed, or better developed, elongate or rhizome-like; roots numerous, branched Truly aquatic plants or terrestrialin seasonally boggy habitats Leaves terete, or flattened above, with a ligule near the base and a sporangium sunk in a cavity in the leaf below the ligule Usually with annual grass–like leaves arising in a tuft from a flattened corm–like axis; corm 3–4–lobed with black roots arising from the furrows between the lobes Herbaceous perennial aquatics or plants of wet places Usually with annual grass–like leaves arising in a tuft from a flattened corm–like axis; corm 3–4–lobed with black roots arising from the furrows between the lobes Herbaceous perennial aquatics or plants of wet places The only family of the order, containing only the genus Isoëtes. Stem short, corm-like, 2–4-lobed or unlobed, or better developed, elongate or rhizome-like; roots numerous, branched Truly aquatic plants or terrestrialin seasonally boggy habitats Truly aquatic plants or terrestrialin seasonally boggy habitatsGeneral Information
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Morphology
Source: [
Source: [
Flora of West Tropical Africa - species descriptions
MorphologyNortheastern Flora
General InformationPlants Of the World Online Portal - FTEA
Morphology
