Scrophulariaceae
4-Zygomorphic corollas
![[FMP-field: image]](../picts/Scrophulariaceae/04-Zygomorphic%20corolla.jpg)
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The flowers of the Scrophulariaceae have a sympetalous corolla that are typically zygomorphic, somewhat tubular, and 2-lipped (bilabiate). The upper lip is formed from 2 petals while the lower lip is formed from 3 petals. This example is pale beardstongue, Penstemon pallidus. The flowers are well adapted for pollination by bees. Note that the lower lip forms a landing platform, while the stigmas protrude rather to scrape pollen off a landing insect. The anthers are at two heights (didynamous) at the top of the flower, ready to deposit pollen on bees as they enter the flowers. |