Jepson Flora Project: Jepson Interchange    

 
link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.

RANUNCULACEAE

BUTTERCUP FAMILY

Dieter H. Wilken, except as specified

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]

THALICTRUM

MEADOW-RUE

Perennial from caudex or rhizomes, dioecious or flowers bisexual, generally glabrous
Stems 1–few, generally erect; branches 0 or few
Leaves generally 1–4-ternate, basal or basal and cauline, generally reduced upwards, petioled; segments wedge-shaped, fan-shaped, or ± round; upper surface generally green; lower surface pale green
Inflorescence: raceme or panicle, axillary or terminal, generally erect; pedicels generally erect in fruit; bracts simple to 1-ternate
Flower radial; sepals 4–5, generally green, petal-like or not, often early deciduous; petals 0; stamens 8–many, generally > sepals, anthers generally narrowly oblong, tip generally abruptly pointed, filaments generally thread-like; pistils 2–20
Fruit: achenes, compressed laterally to not, ribbed or veined, beaked
Species in genus: ± 80 species: temp North America, Eurasia, Africa; some ornamental, medicinal
Etymology: (Greek: name given by Dioscorides, Greek physician-botanist)
Reference: [Boivin 1944 Rhodora 46:337–377,391–445,453–487]

Native

T. sparsiflorum Fisch. & C.A. Mey.

Plant 60–180 cm; flowers bisexual
Leaves basal (few) and cauline, 4–30 cm; segments 12–20 mm, finely glandular-puberulent, tip obtuse to rounded
Inflorescence: panicle, generally leafy
Flower: sepals generally 5, 2.5–4 mm, greenish white; stamens 10–20, anthers ovate to oblong, tip obtuse, filaments flat
Fruits 6–22, ± spreading; body 4–6 mm, strongly compressed laterally, side generally semi-circular to crescent-shaped, veined or weakly ribbed; beak 1–1.5 mm, straight
Chromosomes: 2n=42
Ecology: Uncommon. Moist places, streambanks, coniferous forest
Elevation: 1400–3300 m.
Bioregional distribution: Cascade Range, c&n Sierra Nevada, San Bernardino Mountains, San Jacinto Mountains, n East of Sierra Nevada (Sweetwater, White mtns)
Distribution outside California: to Alaska, Colorado, Asia
Flowering time: Jul–Aug
Horticultural information: TRY.

previous taxon | next taxon
bioregional map for THALICTRUM%20sparsiflorum 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 Thalictrum sparsiflorum
Retrieve dichotomous key for Thalictrum
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page
Glossary
    FEEDBACK
  • This page is no longer being maintained.


University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California