life
cycle - perennial, reproducing by seed and rhizomes
stems -
upright, branch or unbranched, sharp spines, star-shaped hairs,
zig-zag or angled at nodes, becoming woody growth
habit 1, growth
habit 2, growth
habit 3, spines
leaves -
alternate, oblong to oval, star-shaped hairs, irregularly lobed
resembling oak leaves; spines (yellow) random on petioles,
midrib and veins leaves 1, leaves 2, underside leaf spines
flowers -
5-petaled, white to light violet, star-shaped flowers, petals
curved downward, conspicuous yellow stamens; solitary or clustered
from internodes flowers
1, flowers
2, flowers
3
fruits -
green berries, yellow and wrinkled when mature fruits 1, fruits 2
