| Cuscuta glomerata | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Solanales |
| Family: | Convolvulaceae |
| Genus: | Cuscuta |
| Species: | C. glomerata |
| Binomial name | |
| Cuscuta glomerata | |
Cuscuta glomerata is a parasitic plant in the morning glory family, Convolvuaceae. It is commonly known by the name rope dodder.
The flowers of Cuscuta glomerata are white and bloom in July, August, and September. [1]
The flowers have a distinctive spiral arrangement of small, white, stalkless flowers along its main stem. These flowers have 5 fused petals with lance-like shapes and pointed tips, spreading out like stars and curving slightly backward. There are 5 long, triangular calyx lobes with backward-pointing tips and 8 to 15 triangular bracts at their base. Inside the floral tube is an ovary with two elongated styles, each with a round stigma at the tip and a small swelling at the base called a stylopodium. The floral tube also contains five stamens with yellow tips, attached just below the petal lobes. Surrounding the ovary are fringed scales that are typically shorter in length. [2]
Cuscuta glomerata has very small or no leaves. Its stems are thin, smooth, and often yellow or orange. They grow in tangled, wiry masses that wrap around and rely on the host plant for support. The stems also have small parts called haustoria, which are modified roots. These haustoria penetrate the host plant to extract moisture and nutrients from it. [2]
The fruit of Cuscuta glomerata is a round, flattened capsule, measuring about 1/8 inch in diameter. At the top of the capsule is a thickened ridge created by the dried stylopodium. This ridge surrounds the opening from which the seeds are released. When mature, the capsules turn brown in color. [2]
Cuscuta glomerata is native to the central United States and can be found in the following states: Arkansas, Iowa, Illinois, Indiana, Kansas, Kentucky, Louisiana, Michigan, Minnesota, Missouri, Mississippi, North Dakota, Nebraska, New Mexico, Ohio, Oklahoma, South Dakota, Tennessee, Texas, and Wisconsin. [1] [3]
It generally grows in "low wet areas" and "moist prairies". [1] As a parasitic plant, it grows on various herbs and frequently on Asteraceae . [1] [4]
Cuscuta, commonly known as dodder or amarbel, is a genus of over 201 species of yellow, orange, or red parasitic plants. Formerly treated as the only genus in the family Cuscutaceae, it now is accepted as belonging in the morning glory family, Convolvulaceae, on the basis of the work of the Angiosperm Phylogeny Group. The genus is found throughout the temperate and tropical regions of the world, with the greatest species diversity in subtropical and tropical regions; the genus becomes rare in cool temperate climates, with only four species native to northern Europe.
Convolvulaceae, commonly called the bindweeds or morning glories, is a family of about 60 genera and more than 1,650 species. These species are primarily herbaceous vines, but also include trees, shrubs and herbs. The tubers of several species are edible, the best known of which is the sweet potato.
Cassytha is a genus of some two dozen species of obligately parasitic vines in the family Lauraceae. Superficially, and in some aspects of their ecology, they closely resemble plants in the unrelated genus Cuscuta, the dodders. When fruit and flowers are absent in the field, the physical resemblance is so close that few people without technical training can discern the difference. In this respect and in their ecology the two genera present a spectacular example of convergent evolution. Nonetheless, Nickrent comments that "Cassytha is uneqivocally assigned to Lauraceae based on (both) morphological and molecular data." In its divergence from habits typical of the Lauraceae, Cassytha also presents examples of mosaic evolution
A parasitic plant is a plant that derives some or all of its nutritional requirements from another living plant. They make up about 1% of angiosperms and are found in almost every biome. All parasitic plants develop a specialized organ called the haustorium, which penetrates the host plant, connecting them to the host vasculature – either the xylem, phloem, or both. For example, plants like Striga or Rhinanthus connect only to the xylem, via xylem bridges (xylem-feeding). Alternately, plants like Cuscuta and some members of Orobanche connect to both the xylem and phloem of the host. This provides them with the ability to extract resources from the host. These resources can include water, nitrogen, carbon and/or sugars. Parasitic plants are classified depending on the location where the parasitic plant latches onto the host, the amount of nutrients it requires, and their photosynthetic capability. Some parasitic plants can locate their host plants by detecting volatile chemicals in the air or soil given off by host shoots or roots, respectively. About 4,500 species of parasitic plants in approximately 20 families of flowering plants are known.
This page provides a glossary of plant morphology. Botanists and other biologists who study plant morphology use a number of different terms to classify and identify plant organs and parts that can be observed using no more than a handheld magnifying lens. This page provides help in understanding the numerous other pages describing plants by their various taxa. The accompanying page—Plant morphology—provides an overview of the science of the external form of plants. There is also an alphabetical list: Glossary of botanical terms. In contrast, this page deals with botanical terms in a systematic manner, with some illustrations, and organized by plant anatomy and function in plant physiology.
Cuscuta californica is a species of dodder known by the common names chaparral dodder and California dodder. This is an annual parasitic plant that may resemble fine strands of spaghetti or twine strewn across other species in its habitat. A mature plant of this species may fulfill all of its food and water needs from the host plant, but they rarely kill their host. It is native to western United States and Baja California in Mexico.
Cuscuta europaea, the greater dodder or European dodder, is a parasitic plant native to Europe, which belongs to the family Convolvulaceae, but was formerly classified in the family Cuscutaceae. It grows on Asteraceae, Cannabaceae, Chenopodiaceae, Fabaceae, Urticaceae and other herbaceous plants, including garden plants such as Coleus and Impatiens, and more occasionally on Humulus. It is a notable parasite of lucerne. In many regions, including the Nepal Eastern Himalayas, this species are used as traditional medicine to treat hepatic diseases.
Cuscuta epithymum is a parasitic plant assigned to the family Cuscutaceae or Convolvulaceae, depending on the taxonomy. It is red-pigmented, not being photosynthetically active. It has a filiform habit, like a group of yarns. Its leaves are very small, like flakes. Its flowers, disposed in little glomerules, have a white corolla, with the androecium welded to the corolla.
Cuscuta salina is a species of dodder known by the English name salt marsh dodder and is a native plant of western North America. The habitat includes coastal tidal wetlands in California, as well as saline habitats away from the coast, such as vernal pools and salt flats. Salt Marsh Dodder is a parasitic plant, wrapping orange-colored stems around natural wetland vegetation and absorbing nutrients of host plants via their specialized structures called haustoria.
This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary of leaf morphology. For other related terms, see Glossary of phytopathology, Glossary of lichen terms, and List of Latin and Greek words commonly used in systematic names.
Cuttsia viburnea is a shrub or bushy tree which has toothed leaves and panicles of white flowers, and that is endemic to eastern Australia. It is sometimes called silver-leaved cuttsia, and confusingly also native elderberry, honey bush or native hydrangea. C. viburnea is the only species assigned to the genus Cuttsia.
Cuscuta japonica, commonly known as Japanese dodder, is a parasitic vine. It has been listed by the State of California as a noxious weed. It has a range of effects on its host and has repeatedly been introduced to the United States of America. C. japonica looks very similar to other vines, making it difficult to distinguish.
Cassytha pubescens is a native Australian hemiparasitic vine species, in the Laurel family. Common names for the species include devils twine, dodder-laurel, spilled devil's twine, snotty gobble or downy dodder-laurel. It is a widespread and common species in south eastern Australia. The species was first formally described in 1810 by the Scottish botanist Robert Brown in Prodromus Flora Novae Hollandiae et Insulae Van Diemen. Leaves are reduced to scales and photosynthesis is achieved through chlorophyll contained in the plants stems. Stems are between 0.5mm and 1.5mm in diameter and the haustoria are between 2 and 3 mm long.
Cassytha glabella, commonly known as the slender devil's twine, is a common twining plant of the Laurel family, found in many of the moister parts of Australia. A hemi-parasitic climber. The specific epithet glabella is from Latin, referring to the lack of hairs. The fruit are sweet and mucousy to taste. The Devil's Twine and Cassytha melantha are similar, but with thicker hairier stems.
Cuscuta pacifica is a species of dodder. Its common name is goldenthread.
Cuscuta denticulata, commonly known as desert dodder or small-toothed dodder, is a thin, yellow to orange, parasitic annual vine in the morning glory family (Convulvulaceae), native to the deserts of the south-western United States and northern Mexico.
Cuscuta compacta, the compact dodder, is a parasitic plant that specializes on woody plants. This species is distributed across the Eastern and Midwestern USA, Eastern Canada, and Mexico.
Cuscuta australis, commonly known as Australian dodder, is a herb in the family Convolvulaceae.
Verbena stricta, also known as hoary verbena or hoary vervain, is a small purple wildflower native to a large region of the central United States.
Cuscuta gronovii is a yellow vine that grows as a parasite off other plants. It is a dicot.