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Lysimachia quadrifolia L.
WHORLED LOOSESTRIFE
Whorled yellow loosestrife

Life   Plantae   Dicotyledoneae   Primulaceae   Lysimachia

Lysimachia quadrifolia, whole plant - in flower - general view
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, whole plant - in flower - general view

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Lysimachia quadrifolia, inflorescence - whole - unspecified
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, inflorescence - whole - unspecified
Lysimachia quadrifolia, inflorescence - ventral view of flower + perianth
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, inflorescence - ventral view of flower + perianth

Lysimachia quadrifolia, leaf - basal or on lower stem
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, leaf - basal or on lower stem
Lysimachia quadrifolia, stem - showing leaf bases
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, stem - showing leaf bases

Lysimachia quadrifolia, stem - showing leaf bases
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, stem - showing leaf bases
Lysimachia quadrifolia, inflorescence - lateral view of flower
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, inflorescence - lateral view of flower

Lysimachia quadrifolia, inflorescence - frontal view of flower
© Copyright Steve Baskauf, 2002-2011 · 4
Lysimachia quadrifolia, inflorescence - frontal view of flower
Lysimachia quadrifolia
© Les Mehrhoff, 2008-2010 · 4
Lysimachia quadrifolia

Lysimachia quadrifolia, Whorled Loosestrife
© Copyright Sheryl Pollock 2011 · 3
Lysimachia quadrifolia, Whorled Loosestrife
Lysimachia quadrifolia
© Copyright Bobby Hattaway 2011 · 3
Lysimachia quadrifolia

Associates · map
FamilyScientific name @ source (records)
Aphididae  Aphis ( @ NCSU_ENT (1)

Mordwilkoja vagabunda @ NCSU (2)

Pemphigus bursarius @ AMNH_PBI (1)

Thecabius ( @ NCSU (3)
Dermateaceae  Discohainesia oenotherae @ BPI (1)
Halictidae  Agapostemon virescens @ AMNH_BEE (1)

Augochlorella aurata @ AMNH_BEE (12)

Lasioglossum birkmanni @ AMNH_BEE (2)

Lasioglossum coriaceum @ AMNH_BEE (2)

Lasioglossum oceanicum @ AMNH_BEE (1)
Mycosphaerellaceae  Cercospora lysimachiae @ BPI (1)

Septoria conspicua @ BPI (1)

Septoria lysimachiae @ BPI (2)
Pucciniaceae  Puccinia limosae @ BPI (13)

Puccinia lysimachiae @ BPI (6)

Puccinia lysimachiata @ BPI (2)

Uromyces acuminatus @ BPI (1)
Uropyxidaceae  Aecidium lysimachiae @ BPI (2)

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Following modified from Delaware Wildflowers
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Delaware Wildflowers  •  Scientific names

Lysimachia quadrifolia L. Whorled Loosestrife
Myrsinaceae — Myrsine family
Native
Lysimachia quadrifolia Lysimachia quadrifolia
Lums Pond State Park
June 2001 Lysimachia quadrifolia
White Clay Creek State Park -- Possum Hill
April 2013

More information on this plant, from other sources.


Copyright David G. Smith

Delaware Wildflowers main page

Following modified from MissouriPlants.com
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Lysimachia quadriflora Sims

Lysimachia quadriflora plant

Family - Primulaceae

Stems - To +/-1m tall, erect, from fleshy rhizomes, herbaceous, branching, glabrous, 4-angled, slightly winged in upper portions by decurrent leaf tissue.

Lysimachia quadriflora stem

Leaves - Opposite, decussate, linear, sessile, entire, deep shiny green, with single prominent midrib, acute, glabrous, to +/-13cm long, +/-7mm broad. Margins revolute and often with a few cilia near base.

Lysimachia quadriflora leaves Pressed leaves.

Inflorescence - Axillary pedicillate flowers near the tips of the stems. The internodes are very short in the upper portions of the plant and create a whorled appearance. Pedicels glabrous, to 2.5cm long. Flowers nodding.

Flowers - Corolla yellow, to 2.5cm broad, 4-lobed. Lobes rotund to ovate, apiculate, slightly lacerate to erose on apical margins, glabrous externally, densely glandular near base internally. Corolla tube very short, to 2mm long. Stamens 5, erect, adnate at apex of corolla tube, opposite the corolla lobes. Filaments compressed slightly, white, glandular pubescent, to 4mm long. Anthers orange-brown, 2.5-3mm long. Style whitish green, glabrous, 5mm long. Ovary superior, subglobose, green, glabrous, 5-valved, 1.2mm in diameter. Placentation free-central. Locules (seeds) many. Sepals 5, spreading, to 7mm long, 2.5mm broad, glabrous, ovate-lanceolate, entire, green, acute to acuminate.

Lysimachia quadriflora calyx Calyx.

Lysimachia quadriflora flower

Lysimachia quadriflora flower Flower close-up.

Flowering - June - August.

Habitat - Stream banks, swampy meadows, wet thickets.

Origin - Native to U.S.

Other info. - This species can be found in the central portions of Missouri. The plant is easy to ID in the field because of its thin, opposite leaves, its falsely-whorled flowers, and the wet habitat it prefers. L. quadriflora also prefers calcareous soils. The flowers can sometimes be white in color.
Traditionally the leaves of this plant were dried and made into a bland tea which was used to treat feminine problems and kidney troubles.

Photographs taken along the shores of the Current River, Shannon County, MO., 7-6-03.


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Following modified from Plants Database, United States Department of Agriculture
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http://plants.usda.gov/java/profile?symbol=LYQU2 ---> https://plants.usda.gov/java/profile?symbol=LYQU2
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://plants.usda.gov/java/profile?symbol=LYQU2

Following modified from Flora of North America
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Link to Flora of North America home
 
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FNA Vol. 8 Page 308, 310, 314, 315, 316 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 8 | Myrsinaceae | Lysimachia

15. Lysimachia quadrifolia Linnaeus, Sp. Pl. 1: 147. 1753.

Whorled loosestrife, cross-wort, lysimaque quatre feuilles

Lysimachia hirsuta Michaux; L. quadrifolia var. variegata Peck

Stems erect, usually simple, 3-10 dm, usually sparsely pubescent, at least at nodes (or glabrous); rhizomes slender to somewhat thickened; bulblets absent. Leaves whorled; petiole absent or 0.1-0.3 cm, eciliate; blade elliptic to lanceolate or ovate, 3-12 : 0.8-3.5(-4.5) cm, base cuneate or rounded, slightly decurrent, margins entire, plane, glabrous or sometimes sparsely pubescent, apex acuminate or acute (rarely obtuse), surfaces densely to sparsely punctate, pubescent at least along abaxial veins and margins; venation pinnate-arcuate. Inflorescences axillary in leaves (distalmost axils sometimes without flowers), solitary flowers. Pedicels 1.5-3 cm, sparsely pubescent. Flowers: sepals 5, calyx streaked with dark resin canals, 3-6 mm, slightly stipitate-glandular, lobes lanceolate, margins thin; petals 5, corolla yellow with reddish base and, sometimes, margins, streaked with black or maroon resin canals, rotate, 5-8 mm, lobes with margins entire, apex acute to rounded, stipitate-glandular adaxially; filaments connate ca. 1.7 mm, shorter than corolla; staminodes absent. Capsules 3-3.5 mm, sometimes dark-punctate, glabrous. 2 n = 84.

Flowering summer. Dry to mesic hardwood forests, lowlands, fens, moist clearings, roadsides, and fields, rocky thickets and slopes, seashores; 0-1000 m; N.B., Ont., Que.; Ala., Conn., Del., D.C., Ga., Ill., Ind., Ky., Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

A hybrid (known only from one population in Washington County, North Carolina) of Lysimachia quadrifolia with L. loomisii has been called L. × radfordii H. E. Ahles.

Following modified from CalPhotos
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http://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Lysimachia+quadrifolia&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant ---> https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Lysimachia+quadrifolia&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant
&pull 20q v4.662 20091102: Error 501 Protocol scheme 'https' is not supported (LWP::Protocol::https not installed) https://calphotos.berkeley.edu/cgi/img_query?query_src=dl&where-taxon=Lysimachia+quadrifolia&where-lifeform=specimen_tag&rel-lifeform=ne&rel-taxon=begins+with&where-lifeform=Plant

Updated: 2017-12-11 20:11:29 gmt
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