Montia fontana |
Montia bostockii |
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annual water miner's-lettuce, blinks, spring water chickweed, water blinks, water chickweed, water montia |
Bostock's minerslettuce, Bostock's montia |
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Habit | Plants annual or biennial, never bulbiferous. | Plants perennial, rhizomatous or stoloniferous, not bulbiferous, rooting at nodes. |
Stems | prostrate or decumbent, 1–30 cm, freely rooting at nodes, forming mats. |
erect, 5–15 cm. |
Leaves | opposite, sessile; blade oblanceolate to rhombic, 2–20 × 0.5–10 mm. |
alternate, secund, petiolate; blade linear, 2–40 × 0.5–2 mm. |
Inflorescences | leafy. |
1-bracteate; bract linear to oblanceolate, 10 × 2 mm. |
Flowers | 1–8, slightly bilateral; sepals 1–1.5 mm; petals 5, connate proximally, white, unequal, 1–2 mm; stamens 3, anther pink or yellow. |
1–12(–20); sepals 3.5–4.5 mm; petals 5, white with yellow blotches at base, or pinkish, 10–15 mm; stamens 5, anther yellow. |
Seeds | 0.7–1.2 mm, tuberculate; elaiosome present. |
0.8–1.5 mm, tuberculate; elaiosome present. |
2n | = 20, 40. |
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Montia fontana |
Montia bostockii |
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Phenology | Flowering spring. | Flowering early summer. |
Habitat | Pools, springs, meadows, other wet or moist places | Moist, often north-facing slopes of scree or alpine tundra |
Elevation | 0-3700 m [0-12100 ft] | 0-1000 m [0-3300 ft] |
Distribution |
AK; CA; ID; MA; ME; MT; NH; NV; NY; OR; UT; VT; WA; WY; BC; MB; NB; NL; NS; NT; NU; ON; PE; QC; YT; SPM; Central America; South America; Africa; Greenland; Asia; Europe; Arctic regions
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AK; BC; YT |
Discussion | Montia fontana displays a multitude of forms varying in stature, leaf shape, and seed size. Segregate species, varieties, and subspecies have been named. Based on my study of worldwide collections of the species, much variation in M. fontana is attributable to phenotypic differentiation of ramets produced by local environmental conditions and unrelated to genetic variation. Until macromolecular or other studies shed light on the variation in M. fontana, it seems pointless to recognize infraspecific taxa or segregate species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Considered an ancestral species of Montia and Claytonia by some workers, M. bostockii appears related to M. vassilievii (Kuzeneva) McNeill of Asia and M. linearis of North America. The pollen is distinctly tholate with spiniferous saccae. The flowers of both M. bostockii and M. vassilievii closely resemble claytonias but have only three ovules, as opposed to arctic claytonias, which have six. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 4, p. 487. | FNA vol. 4. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Claytonia hallii, M. clara, M. funstonii, M. hallii, M. minor | Claytonia bostockii, Montiastrum bostockii |
Name authority | Linnaeus: Sp. Pl. 1: 87. (1753) | (A. E. Porsild) S. L. Welsh: Great Basin Naturalist 28: 154. (1968) |
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