Oenothera tubicula

(Texas Sundrops)


Oenothera tubicula, Terlingua Creek, Brewster Co. 5708


Oenothera tubicula, El Solitario, Big Bend Ranch State Park 4172


Oenothera tubicula, Agua Fria Rd, Brewster Co. 1405


Oenothera tubicula, Agua Fria Rd, Brewster Co. 1434

Scientific Name Oenothera tubicula (Calypholus tubicula) USDA PLANTS Symbol CATU6
Common Name Texas Sundrops ITIS Taxonomic Serial No. 836081
Family Onagraceae (Evening Primrose) SEINet
Click Here
Description Habitat: Desert environment, gravelly, calcareous soils in dry washes and flats.
Plant: Erect perennial, single or multiple stems, slightly hairy, do not appear to be woody, 4 to 12 inches tall; branched in upper part.
Leaves: Narrowly lanceolate to lanceolate stem leaves, alternate, somewhat hairy, nearly sessile, 1 to 2 inches long with smooth edges.
Inflorescence: Yellow tubular blossoms opening 1 to 2 hours before sunrise, each about 1 inch across, 4 rounded petals; stigma is shield-shaped, protruding beyond 8 stamens.
Bloom Period: March to September.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, Cal Photos and SEINet.
BONAP Distribution Map

Map Color Key
Texas Status:

Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County

© Tom Lebsack 2024