Lagerstroemia macrocarpa Kurz

De Wilde, Willem J. J. O. & Duyfjes, Brigitta E. E., 2016, Survey of Lagerstroemia L. (Lythraceae) in Indochina (excl. Thailand) with the description of Lagerstroemia densiflora, sp. nov., a new species from Vietnam, Adansonia 38 (2), pp. 241-255 : 250

12. Lagerstroemia macrocarpa Kurz

Journal of the Asiatic Society of Bengal. Part 2. Natural History 42: 234 (1873); Forest Flora of British Burma: 524 (1877). — Gagnep., Flore générale de l’Indo-Chine 2: 942 (1921). — Craib, Florae Siamensis Enumeratio 1: 725 (1931). — Furtado & Srisuko, Garden’s Bulletin Singapore 24: 271, fig. 30A (1969). — P.H.Hô, An Illustrated Flora of Vietnam 2 (1): 25, fig.3664 (1992). — S.Gardner et al., A Field Guide to Forest Trees of Northern Thailand: 206: 449 (2000). — W.J.de Wilde

et al., Flora of Thailand 11 (4): 570, fig. 7 (2014). — Lectotype (desig-

nated by Furtado & Srisuko,1969): Myanmar, Pegu, Kurz 1972 ( CAL) .

Lagerstroemia costa-draconis Furtado & Srisuko , Garden’s Bulletin Singapore 24: 270, fig. 30D. 1969; P. H . Hô , An Illustrated Flora of Vietnam 2 (1): 25, fig. 3663 (1992) . — Type: Thailand, Kanthararom, Suvanakoses 1592 (holo-, SING!; iso-, BKF!, KEP).

SPOT- CHARACTERS. — Bark thin, cracking and flaking; flowers large,

60-80 mm wide; stamens numerous, monomorphic; capsules large,

30-40 mm long, with thick fruiting calyx lobes, c. 2 mm thick.

DISTRIBUTION. — Myanmar, Thailand, Cambodia, Laos, Vietnam.

NOTE

Lagerstroemia costa-draconis was described as different from L. macrocarpa because of its coarsely dentate ornamentation of the ridges of the calyx tube, and its calyx lobes in bud being somewhat thickened in the sutures of the lobes. Among all specimens seen we found these features to be variable, but fresh buds of L. costa-draconis from the type area in E Thailand indeed have a more fleshy coarse ornamentation. More field studies are required to decide whether the status of a distinct var. costa-draconis would be warranted.