Marcgravia evenia

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Marcgravia evenia
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Marcgraviaceae
Genus: Marcgravia
Species:
M. evenia
Binomial name
Marcgravia evenia
Krug & Urb.

Marcgravia evenia is a species of flowering vine in the family Marcgraviaceae. Within this family it belongs to the Galetae group, which is characterized by a long inflorescence axis and boat shaped nectaries. [1] The plant is endemic to Cuba. Tthe inflorescence of M. evenia is extraordinary. At the upper end of the pendant inflorescence are several concave bracts set at an angle to reflect and focus sonar pulses from bats, helping the bats to locate the flowers.. In the middle of the inflorescence is a discoid circle (or single=whorled umbel) of about twenty tubular tetramerous flowers. Below these is a second set of bracts very different from the reflective ones These are modified into extrafloral nectaries which is why the bats are interested, and can be enlisted as pollinators. Inflorescences with two different kinds of bracts are quite rare. [2] [3]

Contents

Bat ecology

Marcgravia evenia relies on Monophyllus , a Cuban nectar-feeding bat, [4] for pollination. This plant has evolved bowl shaped leaves which act as reflectors for a bat's biosonar. [5] This helps the bats to find the plants with greater ease and hence pollinate them with more frequency. The shape of the leaves also helps to guide the bats in locating the hidden feeders. [6] The reflectors are convergent with those of a Bornean pitcher plant, Nepenthes hemsleyana , that attracts bats to its pitchers as roosting sites and uses bat guano as a source of nutrition. [7]

Related Research Articles

<span class="mw-page-title-main">Hypanthium</span> Structure in angiosperms where basal portions form a cup-shaped tube

In angiosperms, a hypanthium or floral cup is a structure where basal portions of the calyx, the corolla, and the stamens form a cup-shaped tube. It is sometimes called a floral tube, a term that is also used for corolla tube and calyx tube. It often contains the nectaries of the plant. It is present in many plant families, although varies in structural dimensions and appearance. This differentiation between the hypanthium in particular species is useful for identification. Some geometric forms are obconic shapes as in toyon, whereas some are saucer-shaped as in Mitella caulescens.

<span class="mw-page-title-main">Inflorescence</span> Term used in botany to describe a cluster of flowers

An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern.

<span class="mw-page-title-main">Petal</span> Part of most types of flower

Petals are modified leaves that surround the reproductive parts of flowers. They are often brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the corolla. Petals are usually accompanied by another set of modified leaves called sepals, that collectively form the calyx and lie just beneath the corolla. The calyx and the corolla together make up the perianth, the non-reproductive portion of a flower. When the petals and sepals of a flower are difficult to distinguish, they are collectively called tepals. Examples of plants in which the term tepal is appropriate include genera such as Aloe and Tulipa. Conversely, genera such as Rosa and Phaseolus have well-distinguished sepals and petals. When the undifferentiated tepals resemble petals, they are referred to as "petaloid", as in petaloid monocots, orders of monocots with brightly colored tepals. Since they include Liliales, an alternative name is lilioid monocots.

<span class="mw-page-title-main">Malvaceae</span> Family of flowering plants

Malvaceae, or the mallows, is a family of flowering plants estimated to contain 244 genera with 4225 known species. Well-known members of economic importance include okra, cotton, cacao and durian. There are also some genera containing familiar ornamentals, such as Alcea (hollyhock), Malva (mallow), and Tilia. The largest genera in terms of number of species include Hibiscus, Sterculia, Dombeya, Pavonia and Sida.

<i>Heliconia</i> Genus of plants

Heliconia is a genus of flowering plants in the monotypic family Heliconiaceae. Most of the ca 194 known species are native to the tropical Americas, but a few are indigenous to certain islands of the western Pacific and Maluku in Indonesia. Many species of Heliconia are found in the tropical forests of these regions. Most species are listed as either vulnerable or data deficient by the IUCN Red List of threatened species. Several species are widely cultivated as ornamentals, and a few are naturalized in Florida, Gambia, and Thailand.

<span class="mw-page-title-main">Bract</span> Modified or specialized leaf

In botany, a bract is a modified or specialized leaf, especially one associated with a reproductive structure such as a flower, inflorescence axis or cone scale. Bracts are usually different from foliage leaves. They may be smaller, larger, or of a different color, shape, or texture. Typically, they also look different from the parts of the flower, such as the petals or sepals. A plant having bracts is referred to as bracteate or bracteolate, while one that lacks them is referred to as ebracteate and ebracteolate, without bracts.

<i>Amaryllis belladonna</i> Species of flowering plant in the family Amaryllidaceae

Amaryllis belladonna, the Jersey lily, belladonna-lily, naked-lady-lily, or March lily, is a plant species native to Cape Province in South Africa but widely cultivated as an ornamental. It is reportedly naturalized in many places: Corsica, Portugal, the Azores, Madeira, the Canary Islands, the Scilly Isles of Great Britain, the Democratic Republic of the Congo, Ascension Island, Australia, New Zealand, Mexico, Cuba, Haiti, the Dominican Republic, Chile, California, Texas, Louisiana, Mississippi, and the Juan Fernández Islands.

<span class="mw-page-title-main">Entomophily</span> Form of pollination by insects

Entomophily or insect pollination is a form of pollination whereby pollen of plants, especially but not only of flowering plants, is distributed by insects. Flowers pollinated by insects typically advertise themselves with bright colours, sometimes with conspicuous patterns leading to rewards of pollen and nectar; they may also have an attractive scent which in some cases mimics insect pheromones. Insect pollinators such as bees have adaptations for their role, such as lapping or sucking mouthparts to take in nectar, and in some species also pollen baskets on their hind legs. This required the coevolution of insects and flowering plants in the development of pollination behaviour by the insects and pollination mechanisms by the flowers, benefiting both groups. Both the size and the density of a population are known to affect pollination and subsequent reproductive performance.

<span class="mw-page-title-main">Zoophily</span> Pollination by animals

Zoophily, or zoogamy, is a form of pollination whereby pollen is transferred by animals, usually by invertebrates but in some cases vertebrates, particularly birds and bats, but also by other animals. Zoophilous species frequently have evolved mechanisms to make themselves more appealing to the particular type of pollinator, e.g. brightly colored or scented flowers, nectar, and appealing shapes and patterns. These plant-animal relationships are often mutually beneficial because of the food source provided in exchange for pollination.

<span class="mw-page-title-main">Nectar</span> Sugar-rich liquid produced by many flowering plants, that attracts pollinators and insects

Nectar is a sugar-rich liquid produced by plants in glands called nectaries or nectarines, either within the flowers with which it attracts pollinating animals, or by extrafloral nectaries, which provide a nutrient source to animal mutualists, which in turn provide herbivore protection. Common nectar-consuming pollinators include mosquitoes, hoverflies, wasps, bees, butterflies and moths, hummingbirds, honeyeaters and bats. Nectar plays a crucial role in the foraging economics and evolution of nectar-eating species; for example, nectar foraging behavior is largely responsible for the divergent evolution of the African honey bee, A. m. scutellata and the western honey bee.

<span class="mw-page-title-main">Marcgraviaceae</span> Family of dicot flowering plants

The Marcgraviaceae are a neotropical angiosperm family in the order Ericales. The members of the family are shrubs, woody epiphytes, and lianas, with alternate, pinnately nerved leaves. The flowers are arranged in racemes. The flowers are accompanied by modified, fleshy, saccate bracts which produce nectar. The flowers are pentamerous. The fruits are capsules.

<span class="mw-page-title-main">Flower</span> Reproductive structure in flowering plants

A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants. Flowers produce gametophytes, which in flowering plants consist of a few haploid cells which produce gametes. The "male" gametophyte, which produces non-motile sperm, is enclosed within pollen grains; the "female" gametophyte is contained within the ovule. When pollen from the anther of a flower is deposited on the stigma, this is called pollination. Some flowers may self-pollinate, producing seed using pollen from the same flower or a different flower of the same plant, but others have mechanisms to prevent self-pollination and rely on cross-pollination, when pollen is transferred from the anther of one flower to the stigma of another flower on a different individual of the same species.

<i>Aconitum lycoctonum</i> Species of plant

Aconitum lycoctonum is a species of flowering plant in the genus Aconitum, of the family Ranunculaceae, native to much of Europe and northern Asia. It is found in lowlands to the subalpine zone, mainly in forests and shaded habitats. Along with A. napellus, A. lycoctonum is of the most common European species of the Aconitum genus. They are also grown ornamentally in gardens, thriving well in ordinary garden soil. As such, A. lycoctonum can be found in North America, especially in eastern Canada, often in old gardens or as garden escapees.

<span class="mw-page-title-main">Pollination syndrome</span> Flower traits that attract pollinators

Pollination syndromes are suites of flower traits that have evolved in response to natural selection imposed by different pollen vectors, which can be abiotic or biotic, such as birds, bees, flies, and so forth through a process called pollinator-mediated selection. These traits include flower shape, size, colour, odour, reward type and amount, nectar composition, timing of flowering, etc. For example, tubular red flowers with copious nectar often attract birds; foul smelling flowers attract carrion flies or beetles, etc.

<span class="mw-page-title-main">Pseudanthium</span> Type of inflorescence, clusters of flowers

A pseudanthium is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, composite flowers, or capitula, which are special types of inflorescences in which anything from a small cluster to hundreds or sometimes thousands of flowers are grouped together to form a single flower-like structure. Pseudanthia take various forms. The real flowers are generally small and often greatly reduced, but the pseudanthium itself can sometimes be quite large.

<i>Lobelia deckenii</i> Species of plant in the family Campanulaceae

Lobelia deckenii is a species of flowering plant in the family Campanulaceae. It is a giant lobelia endemic to the mountains of Tanzania. It is listed as a threatened plant of the forests of Cherangani hills, Kenya. It grows in moist areas, such as valley bottoms and moorland, in contrast to Lobelia telekii which grows in a similar but drier habitat. These two species produce occasional hybrids. Lobelia deckenii plants usually produce multiple rosettes. Each rosette grows for several decades, produces a single large inflorescence and hundreds of thousands of seeds, then dies. Because individual plants have multiple rosettes, they survive to reproduce repeatedly, and plants with more rosettes flower more frequently. It is iteroparous.

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.

<i>Marcgravia</i> Genus of flowering plants

Marcgravia is a genus of plants in the Marcgraviaceae family commonly eaten by the dwarf little fruit bat. The genus is native to the Caribbean Islands, Central America, and South America, and genus is named in memory of the German naturalist Georg Marcgraf. The plant is visited by Thomas's nectar bat.

<i>Nepenthes hemsleyana</i> Species of pitcher plant from Borneo

Nepenthes hemsleyana is a tropical pitcher plant endemic to Borneo, where it grows in peat swamp forest and heath forest below 200 m above sea level.

<i>Schwartzia</i> (plant) Genus of plants

Schwartzia is a genus of flowering plants belonging to the family Marcgraviaceae. It is found in tropical parts of South America, mainly within the rainforest. It has greenish, white, reddish or red coloured flowers.

References

  1. Dressler, Stefan (2000). "A New Species of Marcgravia (Marcgraviaceae) from Amazonia with Some Notes on the Galeatae Group Including a Key". Willdenowia. 30 (2): 369–374. doi: 10.3372/wi.30.30214 . JSTOR   3997403. S2CID   86449574.
  2. Kaufman, Rachel (July 28, 2011). "Bats Drawn to Plant by"Echo Beacon"" . Retrieved July 28, 2011.
  3. Dressler, Stefan ,Guide to the Genera Lianas and Climbing Plants in the Neotropics - Marcgraviaceae (November 2017)
  4. Lake, John (29 July 2011). "National Geographic and European Scientists Name New 'Talking Plant'". Blogcritics. Archived from the original on 5 August 2011.
  5. Simon, Ralph; Holderied, Marc W.; Koch, Corinna U.; von Helversen, Otto (29 July 2011). "Floral Acoustics: Conspicuous Echoes of a Dish-Shaped Leaf Attract Bat Pollinators". Science. 333 (6042): 631–633. Bibcode:2011Sci...333..631S. doi:10.1126/science.1204210. PMID   21798950. S2CID   5035286.
  6. Gill, Victoria (29 July 2011). "Plants Evolved a Bat Beckoning Beacon". BBC Nature. Archived from the original on 29 July 2011.
  7. Schöner, Michael G.; Schöner, Caroline R.; Simon, Ralph; Grafe, T. Ulmar; Puechmaille, Sébastien J.; Ji, Liaw Lin; Kerth, Gerald (July 2015). "Bats Are Acoustically Attracted to Mutualistic Carnivorous Plants". Current Biology. 25 (14): 1911–1916. doi: 10.1016/j.cub.2015.05.054 . PMID   26166777.