Phyllostegia Benth.

Harley, R.M. et al. (2004). Labiatae, in The Families and Genera of Vascular Plants (K. Kubitzki, ed. in chief) VI: 167-275. Springer-Verlag, Berlin, Heidelberg, New York.

Morphology General Habit

Perennial herbs, lianas or subshrubs, with simple hairs

Morphology Leaves

Leaves simple or sometimes irregularly pinnatisect

Morphology Reproductive morphology Inflorescences

Inflorescence thyrsoid or racemoid

Morphology Reproductive morphology Flowers Calyx

Calyx 5-lobed, becoming broader, often broadly campanulate in fruit, lobes equal or subequal (3/2) sometimes irregularly so, occasionally dentate-serrate

Morphology Reproductive morphology Flowers Corolla

Corolla 2-lipped, 4-lobed (1/3), white to purple, posterior lip moderately long, shorter than lower lip, shallowly hooded or almost flat, entire or emarginate, corolla-tube usually curved

Morphology Reproductive morphology Flowers Androecium Stamens

Stamens equal or posterior pair slightly longer, not or only shortly exserted, thecae weakly distinct

Morphology Reproductive morphology Flowers Gynoecium Stigma

Stigma-lobes short, ± clavate, subequal or anterior broader

Morphology Reproductive morphology Fruits

Nutlets spreading and exserted from calyx at maturity, obliquely attached at base, fleshy, with slightly winged margins, rounded at apex, glabrous.

Note

2n = 64, 66.  About 34 species

Ecology

In mesic to moist forest

Distribution

Hawaii, with one species (P. tahitensis Nadeaud ) in Tahiti and one ( P. tongaensis H. St. John) in Tonga I.