| Melampyrum cristatum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Lamiales |
| Family: | Orobanchaceae |
| Genus: | Melampyrum |
| Species: | M. cristatum |
| Binomial name | |
| Melampyrum cristatum L. | |
Melampyrum cristatum, also known as crested cow-wheat [1] is a species of flowering plant in the family Orobanchaceae. [2]
M. cristatum is an annual herb species which reaches heights of 15-40cm. Stems are erect and reddish green in colour. Leaves are 5-10cm long, almost stalkless and are narrowly elliptic in shape. Flowers are tubular and purple, however the lips of the flower are yellow. M. cristatum flowers from July to August. Seeds are produced inside 10mm long, flat capsules. Seeds possess soft, oily, elaiosomes, which are collected, eaten and distributed by ants. [3] [4]
M. cristatum is native to the following places: Albania, Altai, Austria, the Baltic States, Belarus, Belgium, Bulgaria, Corsica, Crete, Czech Republic, Denmark, Finland, France, Germany, Great Britain, Hungary, Italy, Kazakhstan, North Caucasus, Norway, Poland, Romania, Russia, Siberia (western), Slovakia, Spain, Sweden, Switzerland, Turkey (European), Ukraine, Yugoslavia. [2]
It has also been introduced outside of its natural range into Krasnoyarsk. [2]
This species is associated with woodland habitats, where it grows in clearings, margins and on river banks. [4] M. cristatum will also grow in manmade habitats such as hedgerows [4] and roadsides. [5] [3] It benefits from managed woodland habitats where coppicing is still practiced. [6] M. cristatum is also sometimes found in grassland habitats [1] such as rocky hillside meadows. [3]
M. cristatum is a calcicole, [3] which thrives in lime rich soils. It can be found growing in both chalky and clay soils. [1]
Melampyrum cristatum like all Melampyrum species is a parasite. They are able to obtains nutrients from other host plant species. Despite the ability to steal nutrients from others, M. cristatum has retained its ability to photosynthesize making it a hemiparasite. [1]
Seeds of M. cristatum possess soft, oily, elaiosomes, which are collected and eaten by wood ants (Formica). [6] [3] This relationship is known as mutualistic between both organisms as the ants obtain a food source, whilst seeds are distributed enabling M. cristatum it to colonize new habitats. [7]
In botany, a seed is a plant embryo and food reserve enclosed in a protective outer covering called a seed coat (testa). More generally, the term "seed" means anything that can be sown, which may include seed and husk or tuber. Seeds are the product of the ripened ovule, after the embryo sac is fertilized by sperm from pollen, forming a zygote. The embryo within a seed develops from the zygote and grows within the mother plant to a certain size before growth is halted.
Mercurialis perennis, commonly known as dog's mercury, is a poisonous woodland plant found in much of Europe as well as in Algeria, Iran, Turkey, and the Caucasus, but almost absent from Ireland, Orkney and Shetland. A member of the spurge family (Euphorbiaceae), it is a herbaceous, downy perennial with erect stems bearing simple, serrate leaves. The dioecious inflorescences are green, bearing inconspicuous flowers from February to April. It characteristically forms dense, extensive carpets on the floor of woodlands and beneath hedgerows.
Sanguinaria canadensis, bloodroot, is a perennial, herbaceous flowering plant native to eastern North America. It is the only species in the genus Sanguinaria, included in the poppy family Papaveraceae, and is most closely related to Eomecon of eastern Asia.
The heath fritillary is a species of butterfly in the family Nymphalidae. It is found throughout the Palaearctic from western Europe to Japan, in heathland, grassland, and in coppiced woodland. Its association with coppiced woodland earned it the name "woodman's follower" in parts of the UK. It is considered a threatened species in the UK and Germany, but not Europe-wide or globally.
Melampyrum is a genus of about 20 species of herbaceous flowering plants in the family Orobanchaceae known commonly as cow wheat. They are native to temperate regions of the Northern Hemisphere. They are hemiparasites on other plants, obtaining water and nutrients from host plants, though they are able to survive on their own without parasitising other plants.
Myrmecophytes are plants that live in a mutualistic association with a colony of ants. There are over 100 different genera of myrmecophytes. These plants possess structural adaptations that provide ants with food and/or shelter. These specialized structures include domatia, food bodies, and extrafloral nectaries. In exchange for food and shelter, ants aid the myrmecophyte in pollination, seed dispersal, gathering of essential nutrients, and/or defense. Specifically, domatia adapted to ants may be called myrmecodomatia.
Myrmecochory ( ; from Ancient Greek: μύρμηξ, romanized: mýrmēks and χορεία khoreíā is seed dispersal by ants, an ecologically significant ant–plant interaction with worldwide distribution. Most myrmecochorous plants produce seeds with elaiosomes, a term encompassing various external appendages or "food bodies" rich in lipids, amino acids, or other nutrients that are attractive to ants. The seed with its attached elaiosome is collectively known as a diaspore. Seed dispersal by ants is typically accomplished when foraging workers carry diaspores back to the ant colony, after which the elaiosome is removed or fed directly to ant larvae. Once the elaiosome is consumed, the seed is usually discarded in underground middens or ejected from the nest. Although diaspores are seldom distributed far from the parent plant, myrmecochores also benefit from this predominantly mutualistic interaction through dispersal to favourable locations for germination, as well as escape from seed predation.
Elaiosomes are fleshy structures that are attached to the seeds of many plant species. The elaiosome is rich in lipids and proteins, and may be variously shaped. Many plants have elaiosomes that attract ants, which take the seed to their nest and feed the elaiosome to their larvae. After the larvae have consumed the elaiosome, the ants take the seed to their waste disposal area, which is rich in nutrients from the ant frass and dead bodies, where the seeds germinate. This type of seed dispersal is termed myrmecochory from the Greek "ant" (myrmex) and "circular dance" (khoreíā). This type of symbiotic relationship appears to be mutualistic, more specifically dispersive mutualism according to Ricklefs, R.E. (2001), as the plant benefits because its seeds are dispersed to favorable germination sites, and also because it is planted by the ants.
Melampyrum lineare, commonly called the narrowleaf cow wheat, is an herbaceous plant in the family Orobanchaceae. It is native to North America, where it is found in southern Canada and the northern United States, with an extension south in the Appalachian Mountains. It has a wide habitat tolerance, but is usually found in drier and somewhat exposed woodlands.
Agropyron cristatum, the crested wheat grass, crested wheatgrass, fairway crested wheat grass, is a species in the family Poaceae. This plant is often used as forage and erosion control. It is well known as a widespread introduced species on the prairies of the United States and Canada.
Erythronium americanum, the trout lily, yellow trout lily, or yellow dogtooth violet, is a species of perennial, colony forming, spring ephemeral flower native to North America and dwelling in woodland habitats. Within its range it is a very common and widespread species, especially in eastern North America. The common name "trout lily" refers to the appearance of its gray-green leaves mottled with brown or gray, which allegedly resemble the coloring of brook trout.
East Blean Woods is a 151.4-hectare (374-acre) biological Site of Special Scientific Interest south of Herne Bay in Kent. It is also a National Nature Reserve a Special Area of Conservation and a Nature Conservation Review site. An area of 122 hectares is managed by the Kent Wildlife Trust.
Melampyrum pratense, the common cow-wheat, is a plant species in the family Orobanchaceae.
Norfolk Roadside Nature Reserve is a scheme which was set up in the mid-1990s by collaboration between the Norfolk County Council and the Norfolk Wildlife Trust. The aim of this scheme is to protect and promote the verges of Norfolk's roadside, that contain rare and scarce plant and insect species. Many of Norfolk's roadside verges have survived modern road improvements and as such are remnants of the natural grassland habitats that were once common and widespread in the British Isles. There are currently 67 such sites around the Norfolk countryside, but more are added each year. Once each year every Roadside Nature Reserve is surveyed and recorded by a dedicated group of volunteers from the trust. Demarcation posts are sited at each end of the Reserves.
Leucospermum conocarpodendron is the largest species of the genus Leucospermum, reaching almost tree-like proportions of 5–6 m (16–20 ft) high with a firm trunk that is covered in a thick layer of cork that protects it from most fires. It has greyish or green narrow or broad inverted egg-shaped leaves with three to ten teeth near the tip and large yellow flowerheads, with firm, bent, yellow styles that stick far beyond the rest of the flower and give the impression of a pincushion. It is commonly known as the tree pincushion in English or goudsboom in Afrikaans. They naturally occur near Cape Town, South Africa.
Melampyrum arvense, commonly known as field cow-wheat, is an herbaceous flowering plant of the genus Melampyrum in the family Orobanchaceae. It is striking because of the conspicuous spike of pink or purple terminal bracts which includes the flowers.
Viola abyssinica is a low perennial plant with long trailing stems and whitish or light purple flowers with purple markings on the lip, that is assigned to the violet family. In the wild it grows in moist grassland, forest glades and margins, at altitudes between 1200 and 3400 m (3900–11.000 ft), in eastern Africa, from South Africa to Ethiopia, in Cameroun and Nigeria, and on Madagascar and Bioko. Vernacular names are bezongozongo in Madagascar, and dukunsha in Ethiopia.
Mimetes argenteus is an evergreen, upright, hardly branching, large shrub of about 2 m (6½ ft) high in the family Proteaceae. It has elliptic, silvery leaves, due to a dense covering of silky hairs, that stand out a right angle from the branches. It has cylindric inflorescences of 8–15 cm (3–6 in) long and 10–12 cm (4–5 in) in diameter, crested by smaller silvery pink leaves at an upright angle. These consist of many flower heads, each containing six to nine individual flowers and ar set in the axil of a leaf flushed mauve to carmine. It flowers from March to June. The silver pagoda naturally occurs in the Western Cape province of South Africa. It is called silver pagoda or silver-leaved bottlebrush in English and vaalstompie in Afrikaans.
Corydalis cava is a species of flowering plant in the family Papaveraceae, native to moist, shady, woodland habitats throughout most of mainland Europe, although commonest in central and southeast Europe. Its range extends from Spain in the west to Ukraine, Belarus and the Caucasus in the east and as far north as Sweden. It is absent from Iceland, the UK, the Netherlands, Norway, Finland, Russia and Greece.
Theligonum cynocrambe is a low to short prostrate or occasionally erect, usually hairless annual herb, leaves entire, ovate, untoothed. somewhat succulent, the lower are opposite and the upper alternate by the suppression of one leaf of each pair, there are peculiar united membranous stipules. Large club-shaped glands are present at the apex of the leaves, flowers insignificant with membranous perianth, 2–3 mm, green, unisexual with both sexes on the same plant, in one to three-flowered clusters. The male flowers have a valvate to globose perianth, splitting into two to five lobes when the flower opens. There are 7 up to 12 but sometimes as few as 2 and as many as 30 stamens with filiform filaments and anthers that are erect in the bud, but pendulous later, the female flowers have a tubular shortly toothed perianth and ovary of a single carpel containing a single basal ovule. The style is simple and arises from the base of the ovary. The ovary enlarges irregularly on one side and the style becomes lateral at fruiting time. The fruit is a subglobose nut-like drupe 2mm, containing one seed with a fleshy endosperm. It exhibits myrmecochory which is dispersal of seeds by the agency of ants. Ants feed on the oil body or elaiosome of various seeds and frequently carry the seed some distance from the parent plant. The oil body of the seed is formed of a portion of the pericarp which remains attached to the base of the seed. The ants eat the oil body and then leave the seed undamaged. Young shoots of T. Cynocrambe are sometimes eaten as a vegetable. Grows in rocky habitats, sandy ground, old walls, often in damp and shaded places. Flowers Feb-June.