Few leaved, muricate or glabrous plants up to 50 cm high. Roots many, orange, thick, firm and long. Rhizome small. Squamae small, membranous, the outer loosely surrounding shoot, the inner closely surrounding leaf-and scape-bases. Leaves 2-10, opposite, flat, variable in size, linear to oblong, up to 80 cm long, 5-50 mm wide, muricated, especially along the raised margin and nerves, seldom glabrous. Inflorescence a laxly flowered, divaricate panicle up to 50 cm high, often with unequal accessory branches; scape firm, muricate or glabrous, nearly as long as the racemes; bracts small, 4 mm long, deltoid, auriculate; pedicels up to 12 mm in fruit, ascending. Flowers with spreading, maculate perianth, segments ca. 10 mm long; inner stamens connivent; ovary with 8 ovules per cell. Capsule globose, 5 mm in diam. glabrous. Seeds black, tetrahedral, with hyaline margins.
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Like T. paniculata but roots many, firm and long. Flowers spreading. Capsule globose, ± 5 mm diam., held erect.
Like T. revoluta but leaves few to several, lanceolate and not sheathed individually by cataphylls.