Oenothera serrulata

Plant species in the evening primrose family From Wikipedia, the free encyclopedia

Oenothera serrulata is a species of flowering plant in the Onagraceae known by the common name yellow sundrops. Other common names include halfshrub sundrop,[3] serrate-leaved evening primrose, shrubby evening primrose, plains yellow primrose, and halfleaf sundrop.[4] It is native to central North America, including central Canada and the central United States.[1]

Clade:Tracheophytes
Clade:Angiosperms
Clade:Eudicots
Clade:Rosids
Quick facts Conservation status, Scientific classification ...
Oenothera serrulata
Secure
Secure (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Myrtales
Family: Onagraceae
Genus: Oenothera
Species:
O. serrulata
Binomial name
Oenothera serrulata
Synonyms[2]
List
    • Calylophus australis
    • Calylophus drummondiana
    • Calylophus nuttallii
    • Calylophus serrulata
    • Meriolix drummondiana
    • Meriolix intermedia
    • Meriolix oblanceolata
    • Meriolix serrulata
    • Meriolix spinulosa
    • Oenothera leucocarpa
    • Oenothera spinulosa
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This plant is a subshrub that branches and forms a bushy clump up to 46 centimetres (18 inches) tall. The toothed leaves are up to 8.9 centimetres (3.5 inches) long. The yellow flowers bloom between March and November and have four petals.[4] They open in the morning and close in the afternoon. They fade orange or pink with age. The fruit is a cylindrical capsule.[3] It grows in dry, open plains and prairies.[5]

This drought- and heat-tolerant species grows in many types of substrate, including caliche, limestone, and gypsum.[3] The leaves turn so that their edges face the sun, an adaptation to hot conditions.[4]

Taxonomy

Oenothera serrulata was scientifically described and named by Thomas Nuttall in 1818. It is classified in the genus Oenothera within the Onagraceae family. It has no accepted subspecies or varieties, but it has 27 synonyms according to Plants of the World Online.[2]

More information Name, Year ...
Table of Synonyms[2]
Name Year Rank Notes
Calylophus australis Towner & Raven 1970 species = het.
Calylophus drummondiana Spach 1835 species = het.
Calylophus nuttallii Spach 1835 species ≡ hom., nom. superfl.
Calylophus serrulata (Nutt.) P.H.Raven 1964 species ≡ hom.
Calylophus serrulata var. arizonicus Shinners 1964 variety = het.
Calylophus serrulata var. spinulosus (Torr. & A.Gray) Shinners 1964 variety = het.
Meriolix drummondiana (Spach) Small 1903 species = het.
Meriolix intermedia Rydb. 1903 species = het.
Meriolix oblanceolata Rydb. 1931 species = het.
Meriolix serrulata (Nutt.) Raf. 1819 species ≡ hom.
Meriolix serrulata var. douglasii (Torr. & A.Gray) Walp. 1843 variety = het.
Meriolix serrulata var. drummondii (Torr. & A.Gray) Walp. 1843 variety = het.
Meriolix serrulata var. nuttallii Walp. 1843 variety ≡ hom., not validly publ.
Meriolix serrulata var. spinulosa (Torr. & A.Gray) Small 1896 variety = het.
Meriolix spinulosa (Nutt.) A.Heller 1895 species = het.
Oenothera leucocarpa Comien 1830 species = het.
Oenothera serrulata var. douglasii H.Lév. 1908 variety = het., nom. illeg.
Oenothera serrulata var. douglasii Torr. & A.Gray 1840 variety = het.
Oenothera serrulata subsp. drummondii (Torr. & A.Gray) Munz 1965 subspecies = het.
Oenothera serrulata var. drummondii Torr. & A.Gray 1840 variety = het.
Oenothera serrulata f. flava Munz 1929 form = het.
Oenothera serrulata var. integrifolia H.Lév. 1908 variety = het.
Oenothera serrulata var. nuttallii Torr. & A.Gray 1840 variety = het.
Oenothera serrulata var. oblanceolata (Rydb.) F.C.Gates 1939 variety = het.
Oenothera serrulata var. spinulosa Torr. & A.Gray 1840 variety = het.
Oenothera serrulata var. typica Munz 1929 variety ≡ hom., not validly publ.
Oenothera spinulosa Nutt. 1840 species = het.
Notes: ≡ homotypic synonym; = heterotypic synonym
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References

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