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Silene latifolia ssp. alba

Silene latifolia Poir. ssp. alba (Mill.) Greuter & Burdet

Lychnis alba Mill.

Lychnis ×loveae B. Boivin

Lychnis vespertina Sibth.

Melandrium album (Mill.) Garcke

Silene alba (Mill.) Krause

Silene pratensis (Raf.) Gren. & Godr.

Bladder Campion

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassCaryophyllidaeCacti, many other succulents, carnivorous plants, and leadworts
OrderCaryophyllalesIncludes cacti, carnations, amaranths, ice plants, and many carnivorous plants
FamilyCaryophyllaceaePink or carnation family
GenusSileneProbably from Greek sialon, “saliva,” from a gummy exudation on the stems; or named for Silenus, intoxicated foster father of Bacchus (god of wine) who was covered with foam similar to the glandular secretions of many species of Silene
Specieslatifolia“Wide to broad leaves”
ssp.alba“White”

About plant names...

Bladder campion is a European native, brought to North America, where it is now a common weed.

Identification: Plants are 18-42" (45-106 cm) tall, with hairy, jointed stems. Leaves are oval to narrow, 4" (10 cm) × ¾" (2 cm). Flowers are white or pink, ¾-1" (1.9-2.5 cm) in diameter, with five deeply notched petals. Flowers open in the evening and close by noon. The calyx at the base of each flower is bulbous, like a little balloon, sometimes called the bladder. It is lined with ten prominent dark green or purplish “nerves.” Seeds are small, rounded, and rough.

White campion closely resembles bladder campion:

 

Silene latifolia (Bladder Campion)

6/16/2010 · Nashua River Rail Trail, Groton Center, Groton, MA
≈ 2½ × 4" (7.1 × 10 cm)

Silene latifolia (Bladder Campion)

6/13/2017 · Old Long Loop, Beaver Brook Conservation Area, Hollis, NH
≈ 3½ × 3½" (9.4 × 8.7 cm)

 
Silene latifolia
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Silene latifolia ssp. alba
Common Name

White Campion

Bladder Campion
Plant 12-36" (30-91 cm) high 18-42" (45-106 cm) tall, with hairy, jointed stems
Flowers White, ⅞-1" (2.5-3 cm) in diameter, with five notched petals. The calyx at the base of each flower is bulbous, like a little balloon, sometimes called the bladder. It is lined with ten prominent dark green or purplish “nerves” White or pink, ¾-1" (1.9-2.5 cm) in diameter, with five deeply notched petals. Flowers open in the evening and close by noon. The calyx at the base of each flower is bulbous, like a little balloon, sometimes called the bladder. It is lined with ten prominent dark green or purplish “nerves”
Leaves In young plants, oval or narrow leaves 1½-4" (4-10 cm) long form a rosette at the base. In older plants, a forked stem has opposite pairs of leaves Leaves are oval to narrow, 4" (10 cm) × ¾" (2 cm)
Seeds ¹/₃₂" (1.5 mm) long, dark bluish-brown, with warty bumps in concentric rows Small, rounded, rough
Range/ Zones

USDA Zones: 3a-10b

Habitats Grasslands, roadsides, pastures, waste places Grasslands, roadsides, pastures, waste places
Type Wild Wild
Occurrence Common Common

 

Online References:

Silene latifolia ssp. alba at the Vanderbilt University Bioimages web site

Silene latifolia ssp. alba on science.halleyhosting.com

Silene latifolia ssp. alba at the Washington State Noxious Weed Control Board

Silene latifolia ssp. alba on Forestry Images

Silene latifolia ssp. alba on SEINet—the Southwest Environmental Information Network

Silene latifolia (Bladder Campion)

6/14/2010 · Nashua River Rail Trail, Groton, MA
≈ 5 × 3½" (13 × 9.2 cm) ID is uncertain

Silene latifolia (Bladder Campion)

6/14/2010 · Nashua River Rail Trail, Groton, MA
≈ 5 × 4" (12 × 10 cm) ID is uncertain

Silene latifolia (Bladder Campion)

8/14/2009 · Nashua River Rail Trail, East Pepperell, MA
≈ 2½ × 3½" (6.7 × 9 cm) ID is uncertain

Silene latifolia (Bladder Campion)

5/23/2016 · Wildflower Trail, Beaver Brook Conservation Area, Hollis, NH

Silene latifolia (Bladder Campion)

8/14/2009 · Nashua River Rail Trail, East Pepperell, MA
≈ 9 × 9" (21 × 22 cm) ID is uncertain

Silene latifolia ssp. alba description by Thomas H. Kent, last updated 14 Jun 2017.

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Silene latifolia (Bladder Campion)

6/7/2012 · Nashua River Rail Trail, Groton, Groton, MA
≈ 5 × 3½" (13 × 9.2 cm)

Silene latifolia (Bladder Campion)

8/14/2009 · Nashua River Rail Trail, East Pepperell, MA
≈ 6 × 4" (14 × 11 cm) ID is uncertain

Silene latifolia (Bladder Campion)

8/14/2009 · Nashua River Rail Trail, East Pepperell, MA
≈ 3 × 4½" (8.3 × 11 cm) ID is uncertain

Silene latifolia (Bladder Campion)

6/13/2017 · Old Long Loop, Beaver Brook Conservation Area, Hollis, NH
≈ 7 × 4½" (18 × 12 cm)

Silene latifolia (Bladder Campion)

6/1/2013 · Beaver Brook Assn Conservation Lands, Rte. 130, Hollis, NH
≈ 2½ × 2½" (6.3 × 7.2 cm)

Range:

About this map...