Poranopsis
Accepted name/Authority/Place of publication:
PORANOPSIS Roberty, Candollea 14: 26. 1952.
Tribe:
Cardiochlamyeae
Synonyms:
Porana Burm.f., p.p.; R.C. Fang & S.H. Huang, Fl. Reip. Pop. Sin. 64(1): 24. 1979.
Type Species:
Poranopsis paniculata (Roxb.) Roberty
Habit:
Lianas, lower stem woody, glabrescent, the branches and stem tips herbaceous, tawny or grayish villous or sericeous with 2-armed hairs. Roots fibrous.
Leaves:
Leaf blade cordate-ovate, chartaceous, often rugulose and moderately pubescent adaxially, densely pubescent abaxially; venation pedate; petiole terete or flattish, slightly pulvinate.
Inflorescences:
Inflorescence axillary (or terminal), bracteose, paniculate, flowers fascicled at nodes; bracts foliaceous, texture, indumentum and venation like the leaves, bracteoles 2, scale-like, attached just below calyx; pedicels filiform.
Flowers:
Flowers tiny, often fragrant, fascicled; sepals free, quincuncial, unequally enlarged, outer 3 sepals greatly enlarged (inner 2 sepals slightly so); midvein 1, lateral veins reticulate; corolla funnelform, less than 8 mm, white, limb 5-lobed, outside villous apically, inside glabrous; stamens included or exserted, anthers ellipsoidal, longitudinally dehiscent; pollen 3-colpate, not spiny; pistil included, disc annular or absent, ovary 1-celled, ovules 4, style simple (nearly absent in 1 species); stigmas 2, globose.
Pollen:
Pollen 3-colpate, not spiny.
Fruits:
Fruit a papery, indehiscent utricle, globose to ellipsoid, often apiculate by persistent style, chartaceous, smooth or slightly wrinkled, glabrous or puberulent, enclosed by or protruding from accrescent calyx; outer 3 sepals greatly enlarged, ovate or subcircular, margins free or partially adherent basally, inner 2 sepals only slightly enlarged, often falcate; sepals all thinly chartaceous, midvein 1, finer veins reticulate, prominulous, darker.
Seeds:
Seed 1, reddish-brown to black, smooth, glabrous; hilum (semi-)circular.
Distribution:
Indian subcontinent to SW China and throughout SE Asia. map
Number of Species:
3
References:
Roberty, Candollea 14: 26. 1952.
Staples, Novon 3: 200. 1993.
R.C. Fang & G. Staples, Convolvulaceae In C.Y. Wu & P.H. Raven (eds.), Fl. China 16: 280. 1995.
G. Staples, Flora of Thailand Convolvulaceae 10(3): 454-455 (2010)
Contributors:
