Achyrospermum densiflorum Blume

The calyx in specimens from Hainan is 15-veined, not 10-veined as described by Blume in the original description. This may be due to local variation within the species.

Stems prostrate, rooting adventitiously, ascending portion unbranched, ca. 16 cm, densely pubescent. Petiole 0.5-3(-6) cm; leaf blade ovate, 6.5-9.5 × 3-4 cm, papery, purplish, adaxially sparsely strigose, abaxially densely pubescent on veins, base broadly cuneate, margin crenulate or serrate-crenate, apex acute. Spikes terminal, cylindric, 3.8-5 cm; verticillasters 6-flowered; bracts ovate to spathulate, 6-8 mm, yellowish to pink. Pedicel ca. 1 mm. Calyx 6-7 mm, 15-veined, 2-lipped, becoming enlarged to 8-10 mm, conspicuously netted, pubescent or subglabrescent with yellowish glands; teeth subequal or middle tooth larger. Corolla ca. 7.5 mm, slightly exserted, puberulent; tube slender, ± cylindric except slightly dilated at throat; upper lip 2-lobed, lobes semicircular; lobes of lower lip subcircular, middle lobe entire, lateral lobes ciliate. Anther cells 2. Style apex subequally 2-cleft. Nutlets oblong-obovoid, apex and adaxially densely linear-scaly, abaxially smooth. Fl. Nov, fr. Dec.

Himalaya (Nepal to NEFA), Khasia, Burma, S. China, Thailand, Malaysla.

450-1200 m

Forests, shady areas in valleys. Hainan [Indonesia, Philippines].

Achyrospermum philippinense Bentham; A. phlomoides Blume.