Associations
(
anglais
)
fourni par BioImages, the virtual fieldguide, UK
Foodplant / feeds on
larva of Ceutorhynchus querceti feeds on Rorippa palustris
In Great Britain and/or Ireland:
Foodplant / parasite
colony of sporangium of Peronospora parasitica parasitises live Rorippa palustris
Remarks: season: 1-4
Foodplant / spot causer
amphigenous colony of Ramularia hyphomycetous anamorph of Ramularia armoraciae causes spots on live leaf of Rorippa palustris
Comments
(
anglais
)
fourni par eFloras
All records of
Rorippa islandica (Oeder ex Murray) Borbás from China are based on misidentified plants of
R. palustris. Plants of the former are prostrate diploids (2n = 16) restricted to Europe and W Russia; they have nonauriculate cauline leaves, sepals and petals 1-1.5 mm, and fruit often 2-3(-5) × longer than the pedicels. By contrast, plants of
R. palustris are widespread, erect tetraploids (2n = 32) with auriculate cauline leaves, sepals and petals 1.5-2.6 mm, and fruit shorter than to 2 × longer than the pedicels.
Rorippa palustris is highly variable and has been divided into as many as four subspecies and seven varieties, all of which are indigenous to North America; only subsp. palustris is also indigenous in Eurasia.
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- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
(
anglais
)
fourni par eFloras
Herbs annual or rarely short-lived perennial, (5-)10-100(-140) cm tall, glabrous, rarely hirsute. Stems erect, simple or often branched above, ribbed. Basal leaves rosulate, withered early; leaf blade lyrate-pinnatisect, (4-)6-20(-30) × 1-5(-8) cm. Cauline leaves petiolate or subsessile, auriculate or amplexicaul, lyrate-pinnatisect, (1.5-)2.5-8(-12) × (0.5-)0.8-2.5(-3) cm; lateral lobes oblong or ovate, smaller than terminal lobe, (1 or)2-6(or 7) on each side of midvein, sometimes absent, margin subentire or irregularly dentate, sinuate, serrate, or crenate. Racemes ebracteate. Fruiting pedicels divaricate or slightly to strongly reflexed, (2.5-)3-8(-12) mm, slender, straight or curved. Sepals oblong, 1.5-2.4(-2.6) × 0.5-0.8 mm. Petals yellow or pale yellow, spatulate, (1.5-)1.8-2.6(-3) × 0.5-1.3(-1.5) mm. Filaments 1-2.5 mm; anthers ovate, 0.3-0.5 mm. Ovules 20-90 per ovary. Fruit oblong, ellipsoid, or oblong-ovoid, often slightly curved, (2.5-)4-10(-14) × (1.5-)1.7-3(-3.5) mm; valves not veined; style 0.2-1(-1.2) mm. Seeds brown to yellowish brown, ovoid or subglobose, colliculate, biseriate, 0.5-0.9 × 0.4-0.6 mm. Fl. and fr. Mar-Oct. 2n = 32.
- licence
- cc-by-nc-sa-3.0
- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Distribution
(
anglais
)
fourni par eFloras
Anhui, Gansu, Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jilin, Liaoning, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Xinjiang, Xizang, Yunnan [Afghanistan, Bhutan, India, Japan, Kazakhstan, Korea, Mongolia, Ne-pal, Pakistan, Russia, Sikkim, Tajikistan, Turkmenistan, Uzbekistan; Europe, North America; introduced in Australia, South America, and elsewhere].
- licence
- cc-by-nc-sa-3.0
- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Habitat
(
anglais
)
fourni par eFloras
Marshlands, pastures, meadows, roadsides, shores of lakes and ponds, streamsides, thickets, grasslands; near sea level to 4000 m.
- licence
- cc-by-nc-sa-3.0
- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
(
anglais
)
fourni par eFloras
Sisymbrium amphibium Linnaeus var. palustre Linnaeus, Sp. Pl. 2: 657. 1753; Cardamine palustre (Linnaeus) Kuntze; Nasturtium densiflorum Turczaninow; N. palustre (Linnaeus) de Candolle; N. palustre f. longipes Franchet; N. palustre f. stoloniferum Franchet.
- licence
- cc-by-nc-sa-3.0
- droit d’auteur
- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Rorippa palustris: Brief Summary
(
anglais
)
fourni par wikipedia EN
Rorippa palustris, marsh yellow cress, is a species of flowering plant in the family Brassicaceae. It is widespread and native to parts of Africa, and much of Asia, Europe and Eurasia, North America and the Caribbean. It can also be found in other parts of the world as an introduced species and a common weed, for example, in Australia and South America. It is an adaptable plant which grows in many types of damp, wet, and aquatic habitat. It may be an annual, biennial, or perennial plant, and is variable in appearance as well.
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- Wikipedia authors and editors
