Oenothera caespitosa

Oenothera caespitosa, known commonly as tufted evening primrose, desert evening primrose, rock-rose evening primrose, or fragrant evening primrose, is a perennial plant of the genus Oenothera native to much of western and central North America. It produces a rosette of lobed or toothed leaves each up to 36 centimeters long around a woody caudex. It is normally night-blooming.[1]

Oenothera caespitosa
Oenothera caespitosa var. marginata
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Onagraceae
Genus: Oenothera
Species:
O. caespitosa
Binomial name
Oenothera caespitosa
Oenothera caespitosa at dusk, Convict Lake, Mono County CA


There are many subtaxa, referred to as subspecies or varieties.

Oenothera caespitosa grows to 10 centimeters (4 inches) tall. It is good for rock gardens. The 4-petaled white flowers open at dusk and wilt the next morning, turning pink.[2]

It is a larval host to the white-lined sphinx moth.[3]


Pollination

Oenothera caespitosa is dependent on hawkmoths, including the five-spotted hawkmoth (Manduca quinquemaculata) for pollination.[4]

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References
  1. The Xerces Society (2016), Gardening for Butterflies: How You Can Attract and Protect Beautiful, Beneficial Insects, Timber Press.
  2. "Botanica. The Illustrated AZ of over 10000 garden plants and how to cultivate them", p. 612. Könemann, 2004. ISBN 3-8331-1253-0
  3. The Xerces Society (2016), Gardening for Butterflies: How You Can Attract and Protect Beautiful, Beneficial Insects, Timber Press.
  4. Hodges, Scott A. "Some preliminary Observations on Hawkmoth Pollination of Oenothera caespitosa and Mirabilis multiflora" (PDF): 244–249. Cite journal requires |journal= (help)


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