Description
Perennial branching, aromatic herb or under-shrub, 1 m.
Leaves thick-membranaceous, lanceolate to broadly ovate, 3-8(-ll) by 1.5-4(-5)cm, acute or acuminate, base rounded or cordate, margin remotely double-serrate, densely velutinous on both surfaces;
Distribution
Asia-Tropical: Philippines (Philippines present), Luzon present
Malesia: Philippines (Luzon).
Notes
The type of P. williamsii ELMER has the narrower spikes and leaves.
Citation
VIDAL 1885: Phan. Cuming. Philip.: 136
BTH. 1886: Rev. Pl. Vasc. Filip.: 213
KENG 1969 – In: Gard. Bull. Sing.: 159
Merr. 1923 – In: En. Philip.: 415
Miq. 1859 – In: Fl. Ind. Bat.: 964
F.-VILL. 1880: Nov. App.: 164
