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Halfshrub Sundrop
Evening Primrose Family : Onagraceae
Latin Name : Calylophus serrulatus
Longevity : Perennial
Season : Warm
Origin : Native
Value : Wildlife – fair
Livestock -good
Remarks :
Other common names include, "Berlandier's
sundrops", "Square-bud primrose", and "Beach
evening primrose". Growth 2 – 31 inches tall,
herbaceous above, woody below. Flowers May
to August. The flowers close at night then reopen
at sunrise. This plant is very drought resistant, the
leaves fold during the hot mid-day sun, resulting
in less water loss through the leaf surface. Readily
eaten by livestock, particularly the new growth,
will decrease on overgrazed rangeland. Excellent
muledeer food. Adapted to dry rocky, gravelly, or
sandy prairies.
Source: USDA-NRCS
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