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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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ONAGRACEAE

EVENING PRIMROSE FAMILY

Warren L. Wagner, except as specified Peter H. Raven, Family Coordinator

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(2–7); 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 1–many 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 5:1–278]

CIRCAEA

ENCHANTER'S NIGHTSHADE

Peter C. Hoch

Perennial from tuber-tipped rhizomes or stolons
Leaves opposite, petioled, entire to toothed
Inflorescence: raceme or panicle, generally bracted
Flower biradial; sepals 2, often reflexed; petals 2, erect; stamens 2, pollen yellow, grains shed singly; ovary chambers 1–2
Fruit indehiscent, generally club-shaped, hooked-hairy
Seeds 1 per chamber, adhering to inner fruit wall
Species in genus: 8 species: n hemisphere
Etymology: (Greek: Circe, the enchantress)
Reference: [Boufford 1982 Ann Missouri Bot Gard 69:804–994]
Often self-pollinated.

Native

C. alpina L. subsp. pacifica (Asch. & Magnus) P.H. Raven


Stem 1–5 dm, simple, erect, slender, cylindric, generally densely strigose
Leaf 3–11 cm, ovate to ± round, glabrous or ± hairy; base round to ± cordate; tip acute; petiole 1.5–5 cm
Inflorescence: raceme, erect, densely strigose and glandular; pedicel in fruit 2–5 mm
Flower: hypanthium 0.3–0.5 mm; sepals 1–2 mm, white, reflexed; petals 1–1.5 mm, white; stamens ± = pistil; stigma 2-lobed
Fruit ± 2 mm, 1-chambered
Chromosomes: 2n=22
Ecology: Cool, moist, coniferous forest
Elevation: < 2700 m.
Bioregional distribution: Northwestern California, Cascade Range, n Sierra Nevada Foothills, High Sierra Nevada, San Francisco Bay Area, San Bernardino Mountains, Warner Mountains
Distribution outside California: to w Canada, Montana, New Mexico
Horticultural information: WET: 1, 2, 6 &SHD: 4, 5, 7, 14, 15, 16; DFCLT.

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bioregional map for CIRCAEA%20alpina%20subsp.%20pacifica being generated
 
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).

Retrieve Jepson Interchange Index to Plant Names entry for Circaea alpina subsp. pacifica
Retrieve dichotomous key for Circaea
Overlay Consortium of California Herbaria specimen data by county on this map
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