|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.
Annual to tree
Leaves basal or cauline, alternate, opposite, or whorled, generally simple and toothed (to pinnately compound); stipules 0 or generally deciduous
Inflorescence: spike, raceme, panicle, or flowers solitary in axils; bracted
Flower generally bisexual, generally radial, opening at dawn or dusk; hypanthium sometimes prolonged beyond ovary (measured from ovary tip to sepal base); sepals generally 4(27); petals generally 4 (or as many as sepals, rarely 0), often "fading" darker; stamens generally 4 or 8(2), anthers 2-chambered, opening lengthwise, pollen generally interconnected by threads; ovary inferior, chambers generally 4 (sometimes becoming 1), placentas axile or parietal, ovules 1many per chamber, style 1, stigma 4-lobed (or lobes as many as sepals), club-shaped, or hemispheric
Fruit: capsule, loculicidal (sometimes berry or indehiscent and nut-like)
Seeds sometimes winged or hair-tufted
Genera in family: 15 genera, ± 650 species: worldwide, especially w North America; many cultivated (Clarkia, Epilobium, Fuchsia, Gaura, Oenothera )
Reference: [Munz 1965 North America Fl II 5:1278]
Annual, perennial herb, from taproot or lateral roots
Leaves basal, cauline, or both, alternate, simple to 2-pinnate
Inflorescence bracted; spike, raceme, or flowers solitary in axils
Flower radial, generally opening at dawn (rarely at dusk); sepals 4, reflexed (sometimes 23 remaining adherent); petals 4, yellow, white, lavender, often with darker basal spots, generally fading purplish or reddish; stamens (4)8, longer ones opposite sepals, anthers generally attached at middle (or base), pollen grains 3-angled except in polyploid taxa (visible with hand lens); ovary chambers 4, stigma ± head-like or hemispheric, generally > anthers and cross-pollinated (or ± = anthers and self-pollinated)
Fruit straight to coiled, generally sessile
Seeds in 12 rows per chamber
Species in genus: 62 species: w North America (especially CA-FP), 1 South America
Etymology: (L.A. von Chamisso, French-born German botanist, 17811838)
Reference: [Raven 1969 Contr US Natl Herb 37:161396]
Polyploidy and self-pollination have predominated in evolution of genus. Previously included in Oenothera (" O." in synonyms).
Annual, slender; rosette generally ± 0; hairs spreading, coarse, in inflorescence also glandular
Stem decumbent to ascending, < 15 cm, peeling
Leaf 518 mm, lanceolate to narrowly ovate or elliptic; teeth few or minute
Flower: hypanthium 12.2 mm; sepals 1.24.2 mm, remaining adherent in pairs; petals 2.27 mm, yellow fading reddish, bases with 0 or 2 red dots
Fruit 2030 mm, 0.50.7 mm wide, cylindric, ± swollen by seeds, straight or wavy, sessile
Seeds in 1 row per chamber, 0.81.6 mm, shiny, minutely pitted
Ecology: Granite outcrops, ponderosa-pine or foothill-pine/blue-oak forests
Elevation: 5002350 m.
Bioregional distribution: c Sierra Nevada Foothills (Madera, Mariposa cos.), s High Sierra Nevada (ne Fresno Co.).Related to C. campestris.
See the CNPS Inventory for information about endangerment and rarity.
Leaf lanceolate; teeth several, small
Flower: hypanthium 12.2 mm; sepals 1.23 mm; petals 2.24 mm, not red-dotted; style 2.85 mm
Ecology: Shallow soil on granite outcrops, ponderosa-pine forest
Elevation: 20002350 m.
Bioregional distribution: s High Sierra Nevada (ne Fresno Co.).Self-pollinated. Plants from Merced Lake (± 2200 m, e Mariposa Co.) are similar, warrant further study.
|YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).|