Facts about Bog Chickweed (Stellaria alsine)

Distribution

Stellaria alsine var. alsine :
Bhutan (Asia)
India (Asia)
Japan (Asia)
Nepal (Asia)
China (Asia)
Pakistan (Asia)
Vietnam (Asia)
South Korea (Asia)

Flora of China Editorial Committee. 2001. Fl. China 6: 1–512. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis. http://www.tropicos.org/Reference/1018509

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Stellaria alsine Grimm:
Bhutan (Asia)
Canada (North America)
Chile (South America)
Germany (Europe)
India (Asia)
Japan (Asia)
Nepal (Asia)
Pakistan (Asia)
South Korea (Asia)
United States (North America)
Vietnam (Asia)
China (Asia)

SPECIMEN BASED RECORD. Published protolog data. http://www.tropicos.org/Reference/9990002
Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
Gleason, H. A. 1968. The Choripetalous Dicotyledoneae. vol. 2. 655 pp. In H. A. Gleason Ill. Fl. N. U.S. (ed. 3). New York Botanical Garden, New York. http://www.tropicos.org/Reference/1704
Marticorena, C. & M. Quezada. 1985. Catálogo de la Flora Vascular de Chile. Gayana, Bot. 42: 1–157. http://www.tropicos.org/Reference/1592
Radford, A. E., H. E. Ahles & C. R. Bell. 1968. Man. Vasc. Fl. Carolinas i–lxi, 1–1183. University of North Carolina Press, Chapel Hill. http://www.tropicos.org/Reference/636
Fernald, M. 1950. Manual (ed. 8) i–lxiv, 1–1632. American Book Co., New York. http://www.tropicos.org/Reference/1327
Flora of China Editorial Committee. 2001. Fl. China 6: 1–512. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis. http://www.tropicos.org/Reference/1018509

Source: Missouri Botanical Garden

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Stellaria alsine var. phaenopetala Hand.-Mazz.:
Japan (Asia)

SPECIMEN BASED RECORD. Published protolog data. http://www.tropicos.org/Reference/9990002

Source: Missouri Botanical Garden

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National Distribution

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Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Morphology

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Stellaria alsine is presumed to be native in eastern North America but has been introduced elsewhere in North America and Chile.

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Description

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Plants perennial, creeping, rhi-zomatous. Stems decumbent and ascending, branched, smoothly 4-angled, 10-40 cm, glabrous. Leaves sessile; blade narrowly elliptic, elliptic-lanceolate, or oblanceolate, 0.5-2(-3) cm × 2-10(-13) mm, base cuneate, margins thin with reticulate venation, entire, apex acute, glabrous, slightly ciliate basally. Inflorescences axillary with 1-5-flowered cymes in mid and distal axils of foliage leaves; bracts lanceolate, ca. 1 mm, scarious with green midrib. Pedicels 5-30 mm, glabrous. Flowers ca. 6 mm diam.; sepals 5, 3-veined, lanceolate-triangular, 2.5-3.5 mm, margins scarious, apex acute, glabrous; petals 5, 1.5-3 mm, shorter than (rarely equaling) sepals, blade apex 2-fid almost to base, with widely divergent lobes; stamens 10; styles 3, ca. 1 mm. Capsules green, ovoid, 2.5-3.5 mm, equaling sepals, apex broadly acute; carpophore absent. Seeds pale reddish brown, ± reniform, 0.3-0.4 mm diam., with small tubercles. 2n = 24.

Flora of North America @ eFloras.org

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Description

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Herbs annual, glabrous. Stems tufted, slightly diffuse, ascending, 15--25(--35) cm tall, much branched. Leaves sessile, lanceolate to oblong-lanceolate, (0.2--)0.5--2 cm × (1--)2--4 mm, basally sparsely ciliate, both surfaces slightly pinkish green, base cuneate, semiclasping, margin cartilaginous, slightly undulate, apex acuminate. Flowers 3--5 in cymes or solitary, terminal or axillary. Pedicel 0.5--2 cm, slender, glabrous, slightly declinate in fruit. Sepals 5, lanceolate, 2--4 × ca.1 mm, glabrous, midvein raised, margin membranous, apex acuminate. Petals 5, shorter than or subequaling sepals, 2-cleft nearly to base; lobes linear, apex obtuse. Stamens 5(--10), slightly shorter than petals. Ovary ovoid; styles 3, sometimes 2, linear, short. Capsule ovoid-orbicular, subequaling or slightly longer than persistent sepals, 6-valved. Seeds numerous, brown, reniform, slightly compressed, rugulose. Fl. May--Jun, fr. Jul--Aug. 2n = 24, 26, 46.

Flora of China @ eFloras.org

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Diagnostic Description

Synonym

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Alsine uliginosa (Murray) Britton; Stellaria uliginosa Murray

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Habitat

Habitat & Distribution

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Flowering spring-early summer. Streamsides, flushes, wet tracks, ditches; 0-300 m; St. Pierre and Miquelon; B.C., N.B., Nfld. and Labr. (Nfld.), N.S., P.E.I., Que.; Del., D.C., Ga., La., Maine, Md., Mass., Minn., N.H., N.J., N.Y., N.C., Ohio, Pa., Tenn., Vt., Wash., W.Va.; Europe; introduced in South America (Chile).

Flora of North America @ eFloras.org

Source: Missouri Botanical Garden

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Habitat & Distribution

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Fields, streamsides, wetlands; 500--4000 m. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Henan, Hunan, Jiangsu, Jiangxi, Nei Mongol, Sichuan, Taiwan, Xizang, Yunnan, Zhejiang [Bhutan, India, Japan, Kashmir, Korea, Nepal, Pakistan, Vietnam; Europe].

Flora of China @ eFloras.org

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Associations

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In Great Britain and/or Ireland:
Foodplant / parasite
aggregated, immersed, honey-fuscous, narrowly dark circled around the pore pycnidium of Ascochyta coelomycetous anamorph of Ascochyta stellariae parasitises fading leaf of Stellaria uliginosa
Remarks: season: 5

Foodplant / open feeder
larva of Hypera diversipunctata grazes on leaf of Stellaria uliginosa

Foodplant / parasite
solitary or in small groups, stipitate apothecium of Lanzia stellariae parasitises living stem (lower parts) of Stellaria uliginosa
Remarks: season: 5-10

Foodplant / pathogen
embedded sorus of Microbotryum stellariae infects and damages live anther of Stellaria uliginosa

Foodplant / saprobe
scattered, few, mainly epiphyllous pycnidium of Phyllosticta coelomycetous anamorph of Phyllosticta holosteae is saprobic on dead, bleached leaf of Stellaria uliginosa
Remarks: season: 7

Foodplant / parasite
hypophyllous telium of Puccinia arenariae parasitises live leaf of Stellaria uliginosa

Source: BioImages - the Virtual Fieldguide (UK)

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