Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Anita F. Cholewa and Douglass M. Henderson

Annual, perennial herb, subshrub, glabrous to glandular-hairy
Leaves simple, basal or cauline, alternate, opposite, or whorled, sessile or petioled; stipules 0
Inflorescence sometimes scapose
Flower bisexual, radial; parts generally in 4's or 5's; calyx deeply lobed, often persistent; corolla lobes spreading to reflexed; stamens epipetalous, opposite corolla lobes; ovary generally superior, 1-chambered, placenta basal or free-central, style 1, stigma head-like
Fruit: capsule, circumscissile or 2–6-valved
Seeds small, few–many
Genera in family: ± 25 genera, 600 species: especially n hemisphere; several ornamental (Cyclamen , Dodecatheon , Primula )
Reference: [Channell & Wood 1959 J Arnold Arbor 40:268–288]



Leaves cauline, opposite or whorled, sessile or petioled, lanceolate to widely ovate, gland-dotted, entire
Inflorescence: raceme, panicle, or flower solitary
Flower: parts generally in 5's or 6's; corolla > calyx, yellow; filaments free or fused at base; ovary superior
Fruit 5–6-valved, ovate
Species in genus: 100 species: generally n temp
Etymology: (Greek: loose dagger)
Reference: [Ray 1956 Illinois Biol Monogr 24:1–160]


L. thyrsiflora L.


Stem erect, 20–80 cm, unbranched, glabrous
Leaf 5–12 cm, lanceolate, sessile; base long-tapered
Flower: calyx lobes 1–4 mm; corolla yellow, often with purple dots, lobes linear, generally with small tooth in each sinus; filaments free, erect, thread-like throughout, glabrous
Fruit ± > calyx, black-dotted
Chromosomes: 2n=40,54
Ecology: Wet places
Elevation: 800–1300 m.
Bioregional distribution: Klamath Ranges, Cascade Range, c Sierra Nevada Foothills (Calaveras Co.), n High Sierra Nevada (Plumas Co.)
Distribution outside California: to Alaska, e N.America, Eurasia
Horticultural information: TRY.

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bioregional map for LYSIMACHIA%20thyrsiflora 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 Lysimachia thyrsiflora
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