Description
Key Characters:
Growth Form:
Dioecious or monoecious, climbing or trailing annual herbs.
Stems:
Usually scabrid with short rigid hairs, sometimes hairs multicellular or glandular.
Roots:
Leaves:
Leaves simple.
Alternate.
Blades often palmately 3–7–lobed, or compound.
Margins dentate to palmately 3–7-lobed.
Petiolate.
Stipules absent; tendrils in the stipular position unbranched.
Flowers:
Staminate flowers solitary or clustered; pistillate flowers solitary, rarely clustered, sometimes co-axillary with staminate flowers.
Flowers unisexual or rarely bisexual (perfect), actinomorphic.
Calyx of staminate flowers 5-lobed. Sepals inserted on hypanthium.
Corolla of staminate flowers deeply 5-lobed, the lobes lanceolate to ovate, nectary disk gland-like; pistillate flowers: perianth as in staminate flowers. petals usually yellow or white, inserted on hypanthium alternate with calyx lobes, usually connate ate base, the limb often rotate.
Staminate flowers: Stamens 3, inserted at about the middle of hypanthium, distinct, 2 of the anthers dithecal, the other monothecal, cells flexuous, connectives with apical appendages; anthers opening by longitudinal slits; pistillate flowers: staminodes 3.
Ovary inferior, of a single carpel or 3-carpellate with carpels connate into a single 3-lobed cell; ovules 1 to numerous per cell, placentation parietal; style inserted in an annular disk; stigma 3-lobed.
Fruit:
Fruit globose to ellipsoid; fleshy; smooth; bristly; or spiny; indehiscent.
Seeds numerous; elliptic; smooth; endosperm absent.
Ploidy:
Habitat:
Elevation Range: