0 a type of leaf that grows from the area just below a flower and is sometimes different in shape or colour from the main leaves:
Poinsettias are popular for their attractive red bracts.
The vertical bract tips are about 2 mm long.
Five whorls of bracts subtending sporangia are visible.
The leaf-like bracts on this cone are almost indistinguishable from the normal vegetative leaves, except they are more curved towards the stem.
When receptive, the stigmas release a species-specific fragrance, and the bracts in the neck of the inflorescence loosen, allowing the pollinators to enter.
Seeds were germinated in their fruiting bracts or after bract removal.
In each experimental patch, 10 plants had a red bract added, 10 plants had a green bract added and five plants had no bract.
For each bract treatment values for the species are means of three temperatures.
Due to the obliqueness of the section, bracts of the whorl above appear individualized.
