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, perennial herb, shrubs, trees
Stem angled or cylindric
Leaves simple, entire, generally opposite, sometimes alternate or whorled
Inflorescence: raceme, spike, or panicle, terminal, or axillary clusters with 1–several flowers
Flower bisexual, generally radial; hypanthium cylindric to bell-shaped, generally membranous, persistent in fruit; sepals 4–6, generally persistent, appendages 3–5 or 0, alternate sepals; petals, stamens inserted on inner hypanthium; petals 4–6 or 0, alternate sepals, deciduous; stamens generally = or 2 X petals, included or exserted; ovary superior, chambers 2–6, style generally slender, stigma head-like
Fruit: capsule, opening by valves from top, splitting sometimes irregular or 0
Seeds 3–many
Genera in family: ± 25 genera, 450 species: temp, tropical, generally in wet habitats. Some ornamental or cultivated for medicine, dyes
Reference: [Graham 1964 J Arnold Arbor 45:235–250]
Annual
Stem prostrate to erect, glabrous
Leaves opposite, 4-ranked, sessile, linear to oblanceolate, generally with basal ear-like lobes
Inflorescence: cluster, axillary; flowers 3–10; bractlets 2, inconspicuous
Flower radial; hypanthium bell- to urn-shaped, ± spheric in fruit; sepals 4, appendages < or ± = sepals, thick, horn-like; petals (0)4; stamens 4(8), included or exserted
Fruit ± spheric, irregularly dehiscent
Seeds many, ± 1 mm
Species in genus: ± 25 species: temp, tropical
Etymology: (Paul Ammann, Germany, 1634–1691)
Reference: [Howell 1985 Wasmann J Biol 43:72–74]
| Native |
Stem decumbent to erect, 1–10 dm, solitary or branched at base
Leaf 2–8 cm, 2–15 mm wide, linear to narrowly lanceolate
Inflorescence compact; flowers 3–5; lower peduncles 3–5(9) mm
Flower: hypanthium urn-shaped; petals 3–4(5) mm, obovate, deep rose-purple; stamens 4(7), exserted in flower, anthers deep yellow
Fruit 3–5 mm diam
Chromosomes: n=33
Ecology: Wet places, drying ponds, lake and creek margins
Elevation: < 300 m.
Bioregional distribution: Cascade Range Foothills, c&s Sierra Nevada Foothills, Great Central Valley, San Francisco Bay Area, Southwestern California, Sonoran Desert
Distribution outside California: to e US, C.America
Flowering time: Jun–Aug
Synonyms: A. auriculata Willd. misapplied
| 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). |
|