Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Dieter H. Wilken

Shrubs, trees, much-branched, often in saline habitats
Stem: trunk bark rough
Leaves alternate, sessile, entire
Inflorescence: racemes or spikes; bracts scale-like
Flower: sepals 4–6, generally free, overlapping; petals 4–5, overlapping, generally attached below nectary; stamens 4–10, attached to disk-like nectary; ovary 1-chambered, placentas parietal or basal, ovules 2–many, styles 2–5
Fruit: capsule, loculicidal
Seeds many, hairy
Genera in family: ± 5 genera, 100 species: Eurasia, Africa, especially Medit.



Stems green, glabrous; twigs jointed, slender, often drooping
Leaves on twigs, generally overlapping, awl- to scale-like, generally excreting salt
Inflorescences generally in panicle-like clusters on current or previous year's twigs
Flower: sepals generally 5, persistent; petals generally 5, deciduous to ± persistent, white to reddish; stamens generally 5, filaments alternate or confluent with nectar disk lobes; nectar disk 4–5-lobed; placentas basal, styles 3
Seeds hairy-tufted
Etymology: (Latin: Tamaris River, Spain)
Reference: [Baum 1967 Baileya 15:19–25]
Invasive weeds with deep roots that lower water table, especially along streams, irrigation canals. Most CA species cultivated for ornamental, windbreaks; some may hybridize.


T. gallica L.

Shrub or tree < 8 m
Leaf 1.5–2 mm, linear to narrowly lanceolate, acute
Inflorescence: spike 2–5 cm; bract oblong to lanceolate, acute to acuminate
Flower: sepals 0.5–1 mm, ovate, acute, outer slightly < inner; petals 1.5–2 mm, elliptic to ovate; nectar disk lobes longer than wide, confluent with filaments
Ecology: Uncommon. Washes, flats, roadsides
Elevation: < 300 m.
Bioregional distribution: s North Coast Ranges, San Joaquin Valley, San Francisco Bay Area, South Coast, n Mojave Desert (Death Valley)
Distribution outside California: to Texas; native to s Europe
Flowering time: Jun–Aug
Plants with outer sepals narrower than inner, petals sometimes > 2 mm, have been called T. africana Poiret; native to Africa.

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bioregional map for TAMARIX%20gallica 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 Tamarix gallica
Retrieve dichotomous key for Tamarix
Overlay Consortium of California Herbaria specimen data by county on this map
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