| Rorippa sessiliflora | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Brassicales |
| Family: | Brassicaceae |
| Genus: | Rorippa |
| Species: | R. sessiliflora |
| Binomial name | |
| Rorippa sessiliflora | |
Rorippa sessiliflora, commonly known as stalkless yellowcress, is a species of flowering plant in the family Brassicaceae (conserved name Cruciferae) . [1] [2]
Rorippa sessiliflora is native to midwestern and eastern United States from South Dakota south to Texas and east from Maryland south through Florida. [1] The species is more frequent in the midwest than southeast. [3] The northerly distribution limit coincides with the southern edge of the Wisconsin glaciation, with the occasional collections from previously glaciated areas further north and in Massachusetts possibly attributable to anthropogenic dispersal. [3]
The species grows in areas that are muddy and subject to disturbance, such as on banks of streams, ponds and lakes, as well as on roadsides, and fallow fields. [1] [3] [4]
Rorippa sessiliflora is glabrous (hairless) annual with erect stems and whose species epithet "sessiliflora" refers to the plant's short pedicels, between 0.5 – 2 mm in length. [1] [3] [4] Stuckey notes other distinctive features for this species as compared to other members of the genus Rorippa, including thick siliques that are wedge-shaped at the base. [3] Although some sources note the absence of petals, [1] [3] Radford et al. suggest the presence of diminutive petals less than 1.5 mm long. [4] Stuckey indicates that the flowers may deviate from typical traits of crucifers, with variable numbers of stamen (3-6) within a plant and occasional anther fusion. [3]
Nasturtium is a genus of a small number of plant species in the family Brassicaceae commonly known as watercress or yellowcress. The best known species are the edible Nasturtium officinale and Nasturtium microphyllum. Nasturtium was previously synonymised with Rorippa, but molecular evidence supports its maintenance as a distinct genus more closely related to Cardamine than to Rorippasensu stricto.
Rorippa is a genus of flowering plants in the family Brassicaceae, native to Europe through central Asia, Africa, and North America. Rorippa species are annual to perennial herbs, usually with yellow flowers and a peppery flavour. They are known commonly as yellowcresses.
Aquilegia coerulea, the Colorado columbine, Rocky Mountain columbine, or blue columbine, is a species of flowering plant in the buttercup family Ranunculaceae, native to the Rocky Mountains and some of the surrounding states of the western United States. It is the state flower of Colorado. The Latin specific name coerulea means "sky blue".
Marshallia is a genus of plants in the tribe Helenieae within the family Asteraceae. Marshallia is native to the southeastern and south-central United States. A common name applied to most species in the genus is Barbara's buttons.
Trillium sessile is a species of flowering plant in the bunchflower family Melanthiaceae. The specific epithet sessile means "attached without a distinct stalk", an apparent reference to its stalkless flower. It is commonly known as toadshade or toad trillium. It is also called sessile trillium or sessile-flowered wake-robin, however it is not the only member of the genus with a sessile flower.
Sibbaldia tridentata is a species in the plant family Rosaceae. Its synonyms include the illegitimate name Sibbaldia retusa and Sibbaldiopsis tridentata. Under the latter name, it has been treated as the only species in the genus Sibbaldiopsis. Its English names include three-toothed cinquefoil, shrubby fivefingers, and wineleaf.
Turritis glabra, commonly known as tower rockcress or tower mustard, is a tall, slim, grey-green plant with small creamy flowers at the top of the stem. It usually grows on poor chalky or sandy soils, in open situations. It is native to Europe, Asia, and North Africa, and it is widespread in North America where it is also probably native. It can be found in many other parts of the world as an introduced species.
Selaginella selaginoides is a non-flowering plant of the spikemoss genus Selaginella with a wide distribution around the Northern Hemisphere. It resembles a moss in appearance but is a vascular plant belonging to the division Lycopodiophyta. It has a number of common names including lesser clubmoss, club spikemoss, northern spikemoss, low spikemoss and prickly mountain-moss. This plant has one close relative, Selaginella deflexa, native to Hawaii. These two plants form a small clade that is sister to all other Selaginella species.
Rorippa columbiae is a species of flowering plant in the family Brassicaceae known by the common names Columbian yellowcress and Columbia yellow cress.
Rorippa sphaerocarpa is a species of flowering plant in the family Brassicaceae known by the common name roundfruit yellowcress. It is native to North America, including the western United States and northern Mexico, where it grows in moist habitat, such as riverbanks and mudflats. It is an annual herb producing decumbent or erect stems up to 40 centimeters long. The leaves are up to 10 centimeters long and have blades are deeply divided into toothed lobes. The inflorescence is a raceme of mustardlike flowers with yellow petals each no more than a millimeter long. The fruit is a round silique 1 or 2 millimeters wide.
Rorippa subumbellata is a rare species of flowering plant in the family Brassicaceae known by the common names Lake Tahoe yellowcress and Tahoe yellow cress. It is known only from the shores of Lake Tahoe, straddling the border between California and Nevada. There are an estimated fourteen populations of the plant still in existence. It grows only on the direct shoreline of the lake, occupying a seven-foot semi-aquatic zone between the high- and low-tide marks. It is directly impacted by recreational activities on the lake, enduring bombardment by boat wakes, trampling, and construction of docks and other structures.
Brassica elongata, the elongated mustard or long-stalked rape, is a species of the mustard plant that is native to parts of Central Europe, Eastern Europe, the Balkan Peninsula, the Caucasus, Morocco and parts of Central Asia. Through plant invasion this species has become naturalized in many other parts of the world. Some of these naturalized regions include South Africa, North Western Europe, Australia and North America. Given the wide range of climate and ecological conditions of these regions, B. elongata has been able to disrupt the ecosystems of their native plant habitats and has been label as an invasive species in many of its naturalized zones. In North America, this species is often found as a roadside weed in the southwestern states, particularly in the state of Nevada. Studies allude that the Cruciferae might have migrated through the Bering land bridge from what is now Central Asia. Commonly known as the long-stalked rape or as langtraubiger Kohl in German, this species is a close cousin to Brassica napus (rapeseed) and a secondary genetic relative to B. oleracea (kale). As a close genetic species of the rapeseed, the long-stalked rape has one of the highest counts of accumulated polyunsaturated linoleic and linolenic acid. Both compounds are heavily used to manufacture vegetable oils. Brassica elongata has the propagative potential of turning into a horticultural product from what is currently a noxious weed.
Rubus illecebrosus is a red-fruited species of Rubus that originally came from Japan, but is also very popular in some European countries like Lithuania. Common names include balloon berry and strawberry raspberry. It has become sparingly naturalized in scattered locations in Canada, the United States, and South America.
Phyllodoce caerulea, known as blue heath in British English and purple mountain heather or blue mountainheath in American English, is an evergreen species of dwarf shrub that grows up to around 15 cm (6 in) tall, and bears clusters of 2–6 purple flowers. It is native to boreal regions around the Northern Hemisphere, but with large gaps in its distribution.
Rorippa barbareifolia, the hoary yellowcress, is a plant species reported from Manchuria, Inner Mongolia, Mongolia, Siberia, Alaska, Yukon and Saskatchewan. It grows in wet habitats. It can be found along forest borders, in ditches, on stream banks, etc.
Schisandra glabra, the bay star-vine, is the only American species of this primarily Asian genus. It is native to the southeastern United States and northern Mexico. It grows in Louisiana, eastern Arkansas, southwestern Tennessee, Mississippi, Alabama, northwestern Florida, and Georgia, with isolated populations in Kentucky, South Carolina, North Carolina, and Hidalgo. Despite its wide range, it is considered a vulnerable species. Few populations are secure due to competition from invasive species and habitat loss.
Nasturtium floridanum, common names Florida yellowcress and Florida watercress, is an aquatic plant species endemic to Florida, though widely distributed within that state. It is found in wet places at elevations less than 50 m.
Styrax grandifolius, the bigleaf snowbell or bigleaf storax, is a plant species native to the southeastern United States, ranging from Virginia south to Florida and west to Texas and Missouri. The plant grows as a deciduous shrub or tree up to 6 metres (20 ft) high, and is most commonly found in upland forests of the southeast's piedmont. As the specific epithet suggests, the species has larger leaves than sympatric Styracaceae, with alternate, obovate leaves up to 14 cm long and 10 cm wide that are densely pubescent underneath. Flowers are borne during early summer in racemes containing up to 20 flowers.
Balduina uniflora, commonly called oneflower honeycombhead, savannah honeycombhead or oneflower balduina, is a North American species of plants in the sunflower family. It is native to the southeastern United States. It is the type species of the genus Balduina.
Hypericum canadense, known as Canadian St. Johns-wort, lesser St. John's wort, and lesser Canadian St. Johnswort, is a flowering plant in the genus Hypericum. It is a yellow-flowering annual or perennial herb native to North America and introduced to Ireland and The Netherlands. The specific epithet canadense means "Canadian".