Psilotum nudum

Plants terrestrial or growing on rock (in Victoria), erect, compact, 30–60 cm high. Rhizome short, dichotomously branched, with thin rhizoids. Stems rigid, angular, branched repeatedly beyond main stem, dark green when young then yellow to bronze. Scales sparse, spirally arranged on stem-ridges, simple, elongate-deltoid, pointed, without veins, less than 3 mm long, green and fleshy when young then dry and colourless to brown. Synangium 1.5–3 mm diam., thick-walled, yellow; sporophylls produced in place of scales in younger parts of plant; spores released through 3 radial slits. Sporangia Aug.-Oct.