Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon

ONAGRACEAE EVENING-PRIMROSE FAMILY

Warren L. Wagner & Peter C. Hoch, family description, key to genera; treatment of genera by Warren L. Wagner, except as noted

Annual to perennial herb (to tree). Leaf: cauline or basal, alternate, opposite, or whorled, generally simple and toothed (to pinnately compound); stipules 0 or generally deciduous. Inflorescence: spike, raceme, panicle, or flowers 1 in axils; bracted. Flower: generally bisexual, generally radial, often opening at either dawn or dusk; hypanthium generally prolonged beyond ovary (measured from ovary tip to sepal base); sepals 4(2–7); petals 4(2–7, rarely 0), often fading darker; stamens 2 × or = sepals in number, anthers 2-chambered, opening lengthwise, pollen interconnected by threads; ovary inferior, chambers generally as many as sepals (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, spheric, or hemispheric. Fruit: capsule, loculicidal (sometimes berry or indehiscent and nut-like). Seed: sometimes winged or hair-tufted.
22 genera, ± 657 species: worldwide, especially western North America; many cultivated (Clarkia, Epilobium, Fuchsia, Oenothera). [Wagner et al. 2007 Syst Bot Monogr 83:1–240] Gaura moved to Oenothera. Fuchsia magellanica Lam. naturalized in northern California. —Scientific Editors: Robert Patterson, Bruce G. Baldwin.
Unabridged references: [Munz 1965 North America Fl II 5:1–278]

Key to Onagraceae

GAYOPHYTUM

Harlan Lewis

Annual. Stem: generally erect, < 1 m, slender; hairs 0 to dense, rarely glandular. Leaf: cauline, alternate (or ± opposite near base), petioled or not, narrow-lanceolate, entire. Inflorescence: flowers axillary, pedicelled or not, opening at dawn. Flower: hypanthium inconspicuous; sepals 4, staying fused in 2s or all coming free; petals 4, 0.5–8 mm, white, with 1–2 yellow or ± green spots at base, fading pink or red; stamens 8, those opposite sepals longer, pollen ± yellow; ovary chambers 2, stigma generally not exserted beyond anthers, generally touching them, generally ± spheric. Fruit: capsule, ± cylindric or flat; valves 4, generally all coming free, generally equal. Seed: few to many, generally all maturing, generally appressed to septum, alternate or ± opposite between chambers, in each chamber generally in 1 row and generally not overlapped, 0.5–2.3 mm, ovoid, glabrous or hairy, brown or gray mottled with brown; appendages 0.
± 9 species: western North America, 2 South America. (C. Gay, French author of Flora of Chile, 1800–1873) Self-fertile; taxa with petals < 3 mm self-pollinated.
Unabridged references: [Lewis & Szweykowski 1964 Brittonia 16:343–391]

Key to Gayophytum

G. diffusum Torr. & A. Gray
NATIVE
Stem: < 60 cm; branches at base or not, generally forked distally. Leaf: 1–6 cm, generally reduced distally on stem. Inflorescence: 1st flower 1–20 nodes distal to base. Flower: ovary hairy. Fruit: 3–15 mm, sessile or generally > pedicel, cylindric, slightly to very knobby. Seed: 3–18, alternate or ± opposite, in each chamber occasionally in 2 rows and overlapped, glabrous to densely puberulent.
2n=28. Complex from several 2n=14 species; subspecies may intergrade locally. [Online Interchange]

G. diffusum subsp. diffusum
NATIVE
Flower: petals 3–7 mm; larger stamens 2–6 mm; stigma exserted beyond anthers, hemispheric.
Uncommon in California. Open montane forest, sagebrush scrub; 800–3700 m. Cascade Range, n High Sierra Nevada (Plumas Co.), San Bernardino Mountains, Warner Mountains; western United States to British Columbia, Baja California. May–Sep [Online Interchange]

Previous taxon: Gayophytum diffusum
Next taxon: Gayophytum diffusum subsp. parviflorum

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Nov 27 2014
Citation for this treatment: [Author of taxon treatment] 2013. Gayophytum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=50694, accessed on Nov 27 2014

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.


Geographic subdivisions indicated for the distribution of Gayophytum diffusum subsp. diffusum Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.