J. Hort. Soc. London 4: 84. 1849.
Scape 20–70 cm, stout. Flowers 24–38 mm; perianth pale lilac or sometimes white, tube cylindrical, 9–12 mm, translucent, splitting in fruit, lobes ascending, recurved distally, 20–30 × 4–10 mm, usually more than twice length of tube; filaments 7–10 mm, base not triangular, appendages absent or rudimentary; anthers linear, 9–12 mm, apex rounded; staminodia erect, white to pale lilac, narrowly linear, usually flat, 16–27 mm, margins 1/4–1/2 involute, apex rounded; ovary 5–11 mm; style 15–23 mm; pedicel 2–10 cm.
Subspecies 2 (2 in the flora).
"+timeslengthoftube" is not declared as a valid unit of measurement for this property."thicker" is not a number.