Poinsettia (Christmas Star, Lobster Plant)
Euphorbia pulcherrima · Euphorbiaceae (Spurge family)
AI-generated identification · may be incorrect
Leaf Morphology
Leaf Type
Simple, deciduous (or evergreen perennial in tropical climates)
Shape
Elliptical to ovate with an acuminate tip
Margin
Entire to slightly sinuate or lobed
Arrangement
Alternate, clustered densely near the top of the stems beneath the bracts
Venation
Pinnate with prominent, pale, whitish-green veins and a distinct midrib
Key Features
Milky white latex sap when cut, simple alternate green leaves transitioning to brightly colored bracts, and prominent pale venation
Description
The poinsettia is a commercially important shrub famous for its brilliantly colored red, pink, or white bracts that surround its small yellow flowers. The true leaves are deep green, ovate to elliptical, and form a lush backdrop to the showy floral bracts that emerge during the winter short-day season.
Habitat
Native to tropical deciduous forests, particularly in moderate elevations of Mexico and Central America; thrives in bright, indirect light and well-draining soil
Native Range
Native to Mexico and Central America (Guatemala); widely cultivated globally as a potted indoor holiday plant