Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
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  • Up-to-date information about California vascular plants is available from 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. fendleri A. Gray

Plant 60–200 cm, generally dioecious
Leaves basal and cauline, 7–46 cm; segments 8–20 mm, glabrous to finely glandular-puberulent, tip acute to rounded
Inflorescence: panicle, leafy to bracted above
Flower: sepals generally 4, 2–5 mm, greenish white to purplish; stamens 15–28
Fruits 7–20, spreading to ascending; body 4–8 mm, side with 1–3 ± curved ribs, 0 or several wavy veins
Ecology: Moist, open to shaded places, woodland, forest
Elevation: < 3200 m.
Bioregional distribution: California Floristic Province (except Great Central Valley, South Coast, Channel Islands), Great Basin Floristic Province
Distribution outside California: to Washington, Wyoming, Texas, n Mexico
Some plants in NCoR have some bisexual flowers; vars. in CA difficult, need study.

Native

var. fendleri


Leaf: lower surface (especially upper leaves) generally finely glandular-puberulent (at 20 X )
Fruit: body ± compressed laterally throughout, side obliquely ± ovate to ± obovate, with 2–3 ribs, 0 veins
Chromosomes: 2n=28,56,70
Ecology: Habitats of sp.
Elevation: 900–3200 m.
Bioregional distribution: Klamath Ranges, Cascade Range (very uncommon), Sierra Nevada, San Francisco Bay Area, Outer South Coast Ranges, Transverse Ranges, Peninsular Ranges, Great Basin Floristic Province
Distribution outside California: to Oregon, Wyoming, Texas, n Mexico
Flowering time: May–Aug
Horticultural information: DRN: 4, 5, 6 &IRR: 17 &SHD: 1, 2, 3, 7, 9, 14, 15, 16, 18, 19, 20, 21, 22, 23, 24.

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