Sphenophyllum

Species that have been described include: • †Sphenophyllum angustifolium • †Sphenophyllum changxingense • †Sphenophyllum costae • †Sphenophyllum cuneifolium (Sternb.) Zeiller (1878) • †Sphenophyllum elongatum Rassk. (1961) • †Sphenophyllum emarginatum Brongn. (1822) (type species) • †Sphenophyllum fanwanense • †Sphenophyllum gondwanensis • †Sphenophyllum longifolium (Germar) Gutbier (1843) • †Sphenophyllum lungtanense • †Sphenophyllum miravallis Vetter • †Sphenophyllum oblongifolium (Germar) Unger (1850) • †Sphenophyllum paranaense O. Rösler & Rohn (1984) • †Sphenophyllum pseudotenerrimum Sze (1936) • †Sphenophyllum radiatum Unger (1850) • †Sphenophyllum rhodesii • †Sphenophyllum schlotheimii Brongn. (1828) • †Sphenophyllum sino-coreanum H. Yabe (1922) • †Sphenophyllum stoukenbergi Schmalh. (1887) • †Sphenophyllum subtenerrimum Nath. (1902) • †Sphenophyllum tenuifolium Fontaine & I.C. White (1880) • †Sphenophyllum thonii Mahr (1868) • †Sphenophyllum utkalensis • †Sphenophyllum verticillatum • †Sphenophyllum zwickaviense ==References==