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Epilobium subdentatum (Meyen) Lievens & Hoch  

No occurrences found

Family: Onagraceae
Navajo evening primrose, more...tufted evening primrose, tufted evening primrose
[Oenothera caespitosa Gill. ex Hook. & Arn., moreOenothera caespitosa subsp. caespitosa]
Epilobium subdentatum image
Max Licher
  • Field Guide
  • Resources
Springer et al. 2009, Kearney and Peebles 1969, Heil et al. 2013, Correll and Johnston 1970
Duration: Perennial Nativity: Native Lifeform: Forb/Herb General: Usually acaulescent perennial herb, to 30 cm tall, from a stout taproot; stems lacking or nearly so; plants becoming loosely colonial by spreading roots that emerge from the taproot; herbage mostly puberulent or villous-hirsute, especially on leaf margins, occasionally glabrous. Leaves: Leaves on long petioles, emerging directly from the base of the plant to form a basal tuft; blades lanceolate to elliptic, mostly 3-30 cm long including the petiole, and 5-40 mm wide, with margins entire or more often dentate or raggedly pinnatifid. Flowers: Large, white, showy, and fragrant, borne singly from among the leaves on a short stout pedicel up to 3 cm long; hypanthium (basal portion of the flower which contains the ovary and resembles a stalk) long and narrow, 4-14 cm long; sepals 4 per flower, 2-5 cm long, pointed downward (reflexed) at full flower; petals 4, mostly 2-5 cm long, white when fresh and turning pink or pinkish to rose-purple with age; flowers opening near or shortly after sunset and wilting the next day. Fruits: Capsules more or less erect and forming clumps at the base of the plant, cylindric to lance-ovoid or elliptic-ovoid, mostly 2-5 cm long and up to 1 cm thick; containing numerous seeds. Ecology: Found in a wide range of habitats, especially at open sites, from 3,000-7,500 ft (914-2286 m); flowers April-September. Distribution: Most of western US, from TX west to CA and north to WA; also in northeastern US. Notes: This plant is stemless for the most part above the ground. The leaves grow directly from the base of the plant in bunches (tufted, or caespitose) and are long-petioled and elliptic, with edges that are toothed and densely hairy; flowers large and white, with a long hypanthium tube which emerges from the base of the plant; later maturing into a hard, sessile fruit which is buried in the leaves. Numerous subspecies are found in the region. Oenothera albicaulis can appear similar and be nearly stemless with basal leaves, but that species is annual and Oe. cespitosa is perennial. Ethnobotany: Used for healing, for ceremonies, as a gynecological aid, and for sores. Etymology: Oenothera comes from the Greek oinos, wine, and therao, to seek or imbibe, alluding to the fact that the root of Oenothera biennis was used to flavor wine; cespitosa means having a densely clumped, tufted or cushion-like growth form. Synonyms: Oenothera caespitosa Editor: SBuckley 2010, FSCoburn 2015, AHazelton 2017
Epilobium subdentatum image
Max Licher
Epilobium subdentatum image
Max Licher
Epilobium subdentatum image
Patrick Alexander
Epilobium subdentatum image
Patrick Alexander
Epilobium subdentatum image
Eugene, (Gene) Sturla
Epilobium subdentatum image
Patrick Alexander
Epilobium subdentatum image
Patrick Alexander
Epilobium subdentatum image
Eugene, (Gene) Sturla
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NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.