Lagerstroemia loudonii Teijsm. & Binn.

de Wilde, W. J. J. O. & Duyfjes, B. E. E., 2014, Lagerstroemia (Lythraceae) in Malesia, Blumea 59 (2), pp. 113-122 : 121

Lagerstroemia loudonii Teijsm. & Binn.

Lagerstroemia loudonii Teijsm.& Binn.(1863) 425 (‘ loudoni ’); Gagnep.(1921) 954; Craib (1931) 724; Backer (1964) 256; Furtado & Srisuko (1969) 303,f. 43;P.H. Hô (1992) 27,f. 3669;S. Gardner et al. (2000) 202,441; W.J.de Wil- de & Duyfjes (2013) 98. — Lagerstroemia tomentosa C.Presl var. loudonii (Teijsm.& Binn.) C.B. Clarke (1879) 578. — Type: Teijsmann 5938 (holo U), Thailand, Prachuap Khiri Khan, Boekit Petjaboerie.

Distribution — Lagerstroemia loudonii is endemic to Thailand where also cultivated as an ornamental tree; in Malesia: cultivated in W Java, but no collections seen except several from Botanical Garden Bogor.

Notes — 1. Lagerstroemia loudonii is readily recognised by the fimbriate (upper) margin of the petals.

2. Furtado & Srisuko (1969) agree with Craib (1931) in that L. rottleri C.B.Clarke is a synonym of L. loudonii . The type of L. rottleri is apparently a Rottler collection from Madras area. We have seen the photograph (K000729603) of this collection (filed under L. indica ), but on the sheet no locality is indicated. We cannot confirm its identity with L. loudonii ; possibly it represents a different species, known only by its type.