Bryophyllum ×houghtonii
(D.B.Ward) P.I.Forst.Herb to c. 1.5 m tall; stems ± erect, cylindrical, glabrous, mottled violet-brown, sometimes suckering from the base. Leaves opposite, triangular to lanceolate, 4–8 cm long, V-shaped in section, reddish-green to grey-green with violet-brown spots; margins serrate, plantlets developing between teeth; petiole 1–5 cm long. Flowers pendulous, in dense corymbose cymes; calyx 5–13 mm long, connate into a tube for less than half its length; corolla 20–40 mm long, lobes obovate, c. one third the length of tube, reddish-orange, pink or scarlet. Flowers winter–spring.
EGL. Also naturalised NT, Qld, NSW.
Hybrid between Bryophyllum daigremontianum (Raym.-Hamet & H. Perrier) A. Berger and B. delagoense, of unknown origin, possibly arising in cultivation, although both parents are native to Madagascar, so natural hybridisation is possible. Grown as an ornamental, known in Victoria from a single population near Lakes Entrance where it co-occurs with B. delagoense.
Vegetatively plants closely resemble B. daigremontianum, which is distinguished by its longer and broader leaves (up to 25 cm long and 2.5 cm wide).