Jepson Interchange (more information)
Print edition is available from the University of California Press
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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 |
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TREATMENT FROM THE JEPSON MANUAL |
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Jepson Interchange (more information) |
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©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, sometimes aquatic
Leaves generally basal and cauline, generally alternate, simple or compound; petioles at base generally flat, sometimes sheathing or stipule-like
Inflorescence: cyme, raceme, panicle, or flowers solitary
Flower generally bisexual, radial; sepals generally 5, free, early deciduous or withering in fruit, generally green; petals 0–many, free; stamens generally 10–many; pistils 1–many, ovary superior, chamber 1, style 1, generally ± persistent in fruit as beak, ovules 1–many
Fruit: achene, follicle, berry, or utricle-like, 1–many-seeded
Genera in family: ± 60 genera, 1700 species: worldwide, especially n temp, tropical mtns; many ornamental (Adonis, Aquilegia, Clematis, Consolida, Delphinium, Erianthis, Helleborus ),some highly TOXIC (Aconitum, Actaea, Delphinium, Ranunculus )
Reference: [Duncan & Keener 1991 Phytologia 70:24–27]
Annual from fibrous roots, generally glabrous
Stems 1–many, ascending to erect, slender, generally tufted
Leaves simple; basal, ± sessile, thread-like to narrowly oblanceolate, entire
Inflorescence scapose; peduncle 1-flowered, in fruit generally > 1 cm
Flower bisexual, radial; receptacle in fruit much elongated, cylindric; sepals 5–7, spurred, white to green, fading brownish; petals 0 or 3–5, white to greenish or yellowish, generally early deciduous; stamens 5–many; pistils many
Fruit: achenes, glabrous to puberulent; keel on outer surface, in depression or not, beak (continuation of keel) ± ascending to erect-appressed
Species in genus: 10–15 species: temp Am, Eurasia, New Zealand
Etymology: (Greek: mouse tail, from receptacle in fruit)
Reference: [Campbell 1952 El Aliso 2:389–403; Stone 1959 Evolution 13:151–174]
Fr needed for identification.
| Native |
Plant 1–10 cm
Leaf 1–7 cm, linear
Inflorescence in fruit < leaves; peduncle in fruit < 1 cm
Flower: receptacle in fruit 10–30 mm; sepals 1.5–2.5 mm, spur < 1 mm; petals 3–5, ± = sepals; stamens generally 5
Fruit ± compressed laterally; keel not in a depression; beak ± ascending, ± 1 mm
Ecology: Vernal pools, grassland
Elevation: < 150 m.
Bioregional distribution: Great Central Valley
Distribution outside California: s Oregon
Synonyms: M. minimus var. sessiliflorus (Huth) G.R. Campb
Sometimes confused with M. m.
| 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). |
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