Common Name: BUTTERCUP FAMILY Habit: Annual, perennial herb, woody vine [shrub], occasionally aquatic. Leaf: generally basal and cauline, alternate or opposite, simple or compound; petioles at base generally flat, occasionally sheathing or stipule-like. Inflorescence: cyme, raceme, panicle, or flowers 1. Flower: generally bisexual, generally radial; sepals 3--6(20), free, early-deciduous or withering in fruit, generally green; petals 0--many, generally free; stamens generally 5--many, staminodes generally 0; pistils 1--many, ovary superior, chamber 1, style 0--1, generally +- persistent as beak, ovules 1--many. Fruit: achene, follicle, berry, +- utricle in Trautvetteria, in aggregate or not, 1--many-seeded. Genera In Family: +- 60 genera, 1700 species: worldwide, especially northern temperate, tropical mountains; many ornamental (Adonis, Aquilegia, Clematis, Consolida, Delphinium, Helleborus, Nigella). Toxicity: some highly TOXIC (Aconitum, Actaea, Delphinium, Ranunculus). Note: Taxa of Isopyrum in TJM (1993) moved to Enemion; Kumlienia moved to Ranunculus. eFlora Treatment Author: Margriet Wetherwax & Dieter H. Wilken, family description, key to genera Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Common Name: MEADOW-RUE Habit: Perennial herb from caudex or rhizomes, generally glabrous; dioecious or flowers bisexual. Stem: 1--few, generally erect; branches 0 or few. Leaf: 1--4-ternate or pinnate, basal or basal and cauline, alternate, generally reduced distally on stem; leaflets wedge-shaped to +- round, entire, crenate, or lobed; pale green abaxially, generally green adaxially. Inflorescence: raceme or panicle, axillary or terminal, generally erect, +- scapose or not; bracts simple to 1-ternate; pedicels generally erect in fruit. Flower: sepals 4--5, +- green-white to +- purple, petal-like or not, generally early-deciduous; petals 0; stamens 8--many, generally > sepals, filaments flat or generally thread-like, anthers generally narrowly oblong, tip generally pointed; pistils (1)2--22. Fruit: achene, compressed laterally or not, ribbed or veined, beaked. Etymology: (Greek: name given by Dioscorides, Greek physician-botanist) eFlora Treatment Author: Bruce D. Parfitt & Dieter H. Wilken Reference: Park & Festerling 1997 FNANM 3:258--271
Thalictrum occidentale A. Gray
NATIVE Habit: Plant 40--100 cm; dioecious. Leaf: basal and cauline, 6--40 cm; segments 11--35 mm, glabrous to finely glandular-puberulent. Inflorescence: panicle, bracts leaf-like proximally. Flower: sepals generally 4, 2--5 mm; stamens 15--30, filaments thread-like, anthers oblong-linear, acuminate. Fruit: (3)6--14, generally reflexed; body 4--6 mm, +- compressed laterally, sides obliquely narrowly ovate to narrowly fusiform, ribs generally 3, +- straight, beak 3--4.5 mm. Ecology: Moist, shaded places, conifer forest; Elevation: < 200 m. Bioregional Distribution: n NCo, nw KR; Distribution Outside California: to British Columbia, Wyoming. Flowering Time: May--Jul Synonyms: Thalictrum occidentale var. palousense H. St. John Jepson eFlora Author: Bruce D. Parfitt & Dieter H. Wilken Reference: Park & Festerling 1997 FNANM 3:258--271 Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Thalictrum fendleri var. polycarpum Next taxon: Thalictrum sparsiflorum
Botanical illustration including Thalictrum occidentale
Citation for this treatment: Bruce D. Parfitt & Dieter H. Wilken 2012, Thalictrum occidentale, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=46299, accessed on April 23, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 23, 2024.
No expert verified images found for Thalictrum occidentale.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
Data provided by the participants of the
Consortium of California Herbaria.
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CCH collections by month
Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).
