Jepson Interchange (more information)
Print edition is available from the University of California Press
|
This page is based on the 1993 Jepson Manual.
Please see the Jepson eFlora for up-to-date information about California vascular plants. |
| Jepson Flora Project: Jepson Interchange |
|
|
TREATMENT FROM THE JEPSON MANUAL |
previous taxon |
next taxon
Jepson Interchange (more information) |
|
©Copyright 1993 by the Regents of the University of California
Print edition is available from the University of California Press |
| The second edition of The Jepson Manual (2012) is available from the University of California Press | |
| See also the Jepson eFlora, which parallels the Second Edition |
Annual to tree, sometimes monoecious or dioecious, glandular or with bead-like hairs that collapse with age, becoming scaly or powdery
Stem often fleshy
Leaves generally alternate, entire to lobed; veins generally pinnate
Inflorescence: raceme, spike, catkin-like, or spheric cluster, or flower 1; bracts 0–few
Flower: sepals 1–5, often 0 in pistillate flowers, free or fused, generally persistent in fruit; petals 0; stamens 0–5; ovary generally superior, chamber 1, ovule 1, styles 1–3
Fruit: generally utricle
Seed 1, vertical (fruit compressed side-to-side) or horizontal (fruit compressed top-to-bottom)
Genera in family: 100 genera, 1300 species: worldwide, especially deserts, saline or alkaline soils; some cultivated for food (Beta , beets, chard; Chenopodium , quinoa)
Recent taxonomic note: Recently treated in expanded Amaranthaceae
Annual or perennial herb, glabrous, glandular, or powdery
Stem: branches 0 to generally ± spreading
Leaves generally petioled, linear to deltate, entire to lobed, reduced upward; base generally tapered
Inflorescence: spheric clusters, spikes, or panicle-like, generally dense; bracts generally 0; flowers generally sessile
Flower: calyx segments generally 5, fused or not, persistent, flat to keeled; stamens generally 5; ovary lenticular to spheric, stigmas 2–5
Seed vertical or horizontal, red-brown to black; wall very thin
Species in genus: ± 150 species: temp; some cultivated for food or grain
Etymology: (Greek: goose foot, from leaf shape of some)
Reference: [Wahl 1954 Bartonia 27:1–46; Crawford 1975 Brittonia 27:279–288]
Fr generally required for identification.
| Introduced |
Annual 14–65 cm, strong-smelling
Leaf: blade 3–65 mm, short-stalked-glandular, ovate to elliptic and wavy to pinnately lobed below, oblong and generally entire above
Inflorescence: branches arched or curved; flowers short-pedicelled
Flower: sepals weakly enclosing fruit, ± flat, densely short-stalked-glandular
Fruit ± 0.5 mm diam; wall adherent to seed
Seed horizontal
Chromosomes: 2n=18
Ecology: Disturbed places
Elevation: < 2100 m.
Bioregional distribution: California
Distribution outside California: to Canada, e US; native to Europe
Flowering time: Jun–Oct
| 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). |
|