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.



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]



Perennial, low, glabrous; roots tuber-like
Stem erect, simple
Leaves at base of stem scale-like, others well developed, mainly crowded near stem tip
Inflorescence: flowers solitary in axils of few uppermost leaves; pedicels slender
Flower: parts generally in 5's to 7's; sepals ± free, persistent; corolla spreading, ± flat, = or > calyx, white or pinkish to rose, lobes free ± to base; filaments fused at base, slender, anthers oblong
Fruit 5-valved, spheric
Seeds few
Species in genus: 3 species: North America, n Eurasia
Etymology: (Latin: 1/3 foot, from height of plant)


T. arctica Hook.


Stem 5–20 cm
Leaf 15–50 mm, 12–16 mm wide, elliptic to obovate
Flower: corolla 12–16 mm wide
Chromosomes: 2n=±170
Ecology: Bogs, other wet areas
Elevation: generally < 10 m.
Bioregional distribution: North Coast (near Crescent City, Del Norte Co.)
Distribution outside California: to Alaska, w Canada., Idaho
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for TRIENTALIS%20arctica 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 Trientalis arctica
Retrieve dichotomous key for Trientalis
Overlay Consortium of California Herbaria specimen data by county on this map
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