Thespesia populnea (L.) Sol. ex Correa
Correa da Serra, J.F. (1807) Annales du Museum National d'Histoire Naturelle 8: 290. Lectotype: "Ceylon, Herb. Hermann, Vol. IV, fol. 34, Linn. n. 258 (lectotype: BM)."
Tulip Tree; Indian Tulip Tree; Portia Tree; Pacific Rosewood
Shrub or tree to 12 m. Blaze finely layered.
Flowers large, solitary in the leaf axils, pedicels about 2.5-10 cm long. Epicalyx segments 3, often present in more mature buds and occasionally in flowers. Calyx +/- cupular with minute teeth, but spreading as the flower develops. Corolla large, about 6-7 cm long, mainly yellow (red towards the base) but turning pink or red throughout following anthesis. Stamens fused to form a central column, anthers horseshoe-shaped. Ovules 4 per locule.
Cotyledons transversely elliptic, about 19-27 x 31-47 mm, 5-veined, numerous dark red glands visible with a lens. At the tenth leaf stage: leaves cordate, apex acuminate, base cordate, leaf blade glabrous with a few reddish scales on the upper surface; numerous oil glands visible with a lens; petiole, stem and terminal bud clothed in round or stellate reddish scales; stipules linear, about 2 mm long. Seed germination time 46 days.
Hibiscus populneus L., Species Plantarum 2: 694 (1753), Lectotype: "Ceylon, Herb. Hermann, Vol. IV, fol. 34, Linn. n. 258 (lectotype: BM)."