Euphorbia is one of the largest genera of flowering plants, with about 2,000 species. With at least 7,500 species, the vast genus Euphorbiaceae is a member of the extremely varied plant family. From low-growing garden weeds called spurges to enormous, cactus-like succulents that rival the scale of our North American sahuaro and organ-pipe cacti, the variety within this genus is astounding. Convergent evolution is a biological process by which South African euphorbias have developed succulent, spine-covered stems that closely resemble North American cactus. Until you closely inspect the blossom, it is difficult to imagine that all these varied variants belong to the same genus as the beautiful garden euphorbia known as the poinsettia (E. pulcherrima). The poincettia’s beautiful, red, modified leaves are not petals. In actuality, they don’t even belong to the true flowers. They encircle collections of cyathia, which are tiny, greenish cup-shaped formations. In reality, each cyathium is an inflorescence of unisexual, apetalous male and female flowers. The female flower is made up of a single ovary (pistil) on a stalk, as opposed to the unnoticeable male blossoms, which grow in clusters and are reduced to a single red stamen (pedicel). While the ovaries in poinsettias is concealed within the cyathium, in certain other species the ovary emerges from the cyathium during maturity. Additionally, the cyathium’s rim is covered in a few greenish nectar glands that draw insect pollinators. In certain species, petal-like bracts cover the glands (petaloid appendages). Typically, poinsettias have no petaloid appendages and only one greenish gland per cyathium. Although this flower arrangement differs greatly from the standard floral layout above, it represents the fundamental motif in almost all members of the incredible genus Euphorbia. The name Chamaesyce is sometimes used to refer to the prostrate, herbaceous euphorbias (also known as spurges) that have C-4 photosynthesis.
How many species of plants belong to the euphorbia family?
The spurge family, Euphorbiaceae, is made up of 275 genera and 7,500 species of flowering plants that are predominantly found in tropical regions. The blooms, which are normally unisexual, are carried in a distinctive cluster called a cyathia. Many species produce milky latex, and some can be used to produce wax or oil. The major Euphorbiaceae genera and species are listed below in alphabetical order by common name.
What Euphorbia is the largest?
For any gardener who considers themselves to be “eager but naive,” but a little bit adventurous, hardy euphorbias, often known as spurges, make great plants. They are first and foremost great garden plants that may be used to create bold borders and eye-catching flower arrangements in pots. Euphorbias make up for their lackluster actual blooms with stunning bracts that are produced in late spring and early summer. Euphorbias are a crucial component of a border display because they provide structure and seasonal variety in addition to year-round interest. They are all trouble-free and prefer a sunny location, though the majority will thrive in semi-shade. Once established, the plants are highly drought resistant. The fact that a few members of the clan can become intrusive if given full rein may be their only shortcoming. There are numerous good-natured varieties available though.
The euphorbia family as a whole has many different species, including the poinsettia, which is marketed as a festive indoor plant around the holidays, as well as a number of species that resemble succulent cacti. However, we only highlight the robust garden variants here. Wear gloves and long sleeves if handling euphorbias because they all have milky sap that can irritate skin and is deadly if consumed.
Back of the border
Greater euphorbias, like the evergreen E. characias subsp. wulfenii, which can reach astonishing heights of 1 m or more, fill borders with their imposing forms, plush grey-blue leaves, and gorgeous limy-yellow flowerheads. ‘Lambrooke Gold’ is one of the greatest cultivars to raise since it produces flowerheads that are especially big and vibrant. Another excellent option is “John Tomlinson,” which has more rounder blossoms in a striking yellowish-green color. With its delicately green leaves and startlingly dark eyes in the center of its yellow blossoms, “Black Pearl” is more distinctive. E. mellifera is another huge euphorbia; it can reach heights of 1.2 meters and, if left unchecked, 1.75 meters. The leaves have pronounced white veins and are a deep, vibrant green. The springtime brownish blossoms have a honey-like scent. The later blooming E. sikkimensis has particularly lovely bright pink new branches in the spring and yellow bracts in the late summer. All make excellent border accent plants.
Middle of the Border
‘Blue Wonder,’ a slightly smaller cultivar, has gorgeous, intensely blue foliage and grows to a height of 75 cm. It looks stunning combined with the purple-blue foliage of Cerinthe major in a hot, sunny location. Use E. palustris for a completely different appearance; it grows to a height of 90 cm and has rectangular, pale-green bracts with beautiful yellow flower bracts that turn a lovely orange in the fall. Beautiful euphorbias called E. griffithii ‘Fireglow’ and ‘Dixter’ have flowers that are bright orange against very dark green leaves. E. schillingii forms a tidy cluster that is 75 cm tall and makes a great mid-border shrub. It blooms in the late summer and produces lime-green bracts that last far into the fall. Although it barely grows to a height of 60 cm, E. characias ‘Humpty Dumpty’ is also a worthy candidate because it possesses all the beauty of the larger E. x wulfenii types. To create a tropical atmosphere, combine these euphorbias with grasses and brightly colored geums.
Front of the border
The late spring bloom is among the nicest. E. polychroma, which grows as a 40cm-high bright green dome of foliage with vivid yellow bracts. E. amygdaloides ‘Purpurea’ and ‘Robbiae,’ two low-growing varieties, both grow to a height of about 45 cm and have glossy, dark, evergreen leaves that are, when young, purple or pale green, respectively. In mid- to late spring, both of these cultivars produce greenish-yellow flowers.
Which Euphorbia are poisonous?
A relative of Euphorbia is Acalypha reptans, Miniature Firetail (picture htop), which is on the left (or top). The Croton on the right (or bottom) is another member of the Euphorbiaceae and, although it is not always sappy, it is likewise toxic. Many Acalyphas have toxic, white latex saps (not highly).
Is Euphorbia also known by another name?
The spurge family includes the enormous and diversified genus of flowering plants known as Euphorbia, sometimes known as spurge (Euphorbiaceae). In common English, the term “Euphorbia” is occasionally used to refer to all members of the family Euphorbiaceae as a whole (in honor of the original genus). [2] Some euphorbias, like poinsettias around Christmas, are commonly sold commercially. Some, like the crown of thorns plant, are frequently grown as ornamentals or are collected and highly valued for the aesthetic appeal of their distinctive floral structures (Euphorbia milii). Because euphorbias from Southern Africa and Madagascar’s deserts have developed morphological traits and shapes resembling cacti from North and South America, they are frequently mistakenly referred to as cacti. [3] Because they can withstand heat and drought and have attractive or striking overall forms, some plants are employed as ornamentals in landscaping. [4] [5]
The euphorbia genus includes small annual plants and enormous, long-lived trees.
The genus is one of the largest genera of flowering plants, with over[4] or over 2,000 members[6].
[7]
Along with Rumex and Senecio, it also possesses one of the widest ranges of chromosomal counts.
[7]The type species for the genus Euphorbia is Euphorbia antiquorum.
[9] Carl Linnaeus published the first description of it in Species Plantarum in 1753.
The plants all have strange and distinctive floral structures in addition to a deadly, milky, white, latex-like sap.
[4] The genus can be characterized by the traits of the DNA sequences of its members or by the morphology of the flower heads. The flower head appears to be a single flower when seen as a whole (a pseudanthium). It has a special type of bloom, called a cyathium, in which each flower in the head is stripped down to the minimal minimum required for sexual reproduction. [4] Each flower is either male or female, with the male flowers consisting only of the stamen and the female flowers solely of the pistil. [4] These flowers lack petals, sepals, and other components that are common to flowers in other plant species. [4] Supporting structures for the flower head and other structures below have evolved to draw pollinators through nectar as well as through patterns and colors that mimic the function of petals and other flower components in other flowers. It is the only plant genus that possesses all three types of photosynthesis—CAM, C3, and C4—all at once. [4]
Exists a native Euphorbia species?
Euphorbia is a vast genus of plants. It contains over 2,000 different species of annuals, perennials, shrubs, and trees, including showy perennials and spiky cacti.
The showy bracts are one of Euphorbias’ distinguishing features. These are leaves that have been altered to resemble flowers in order to draw pollinators. But the tiny cluster of true flowers in the middle, known as a cyathia, is the actual bloom.
Crown of Thorns, often known as Euphorbia milii, is one of the most popular Euphorbia species. As their name suggests, these plants are native to Madagascar and are coated in thorns. Crown of Thorns typically blooms on the new growth, so you receive an abundance of flowers throughout the spring, summer, and even into the fall. Crown of Thorns has undergone significant breeding by the Thais to produce showier, bigger bracts that are nearly the size of hydrangea flowers. These come in a variety of colors, including white, yellow, apricot, and cherry red.
There are many other Euphorbias that aren’t as thorny – if Crown of Thorns isn’t your style. If you don’t like plants with sharp thorns.
The most amazing family is the euphorbia family. They don’t resemble one another at all, and their diversity is astounding. The evergreen Euphorbia ‘Firesticks’ has a stunning winter hue. Look for the purple leaf variety of Euphorbia trigona, known as “Red Devil,” which resembles a cactus. The attractive shrub Euphorbia mauritanica grows to a height of 1 meter and is covered in starry flowers. Additionally, due to their succulent stems, they are all drought tolerant.
The chameleons of the plant kingdom are euphorbias. A cottage garden is the ideal place for little spurges. People frequently choose plants for that form of garden that require excessive amounts of food and water; therefore, the problem is more with the plants than with the style. The ideal plant for a cottage garden is euphorbia. For instance, the charming perennial Euphorbia characias subsp. wulfenii grows to a height of 1 meter and has gorgeous lime green flowers that resemble hellebores. A wonderfully lovely ground cover that will spill over the edge and soften the front of a rockery is creeping spurge, or Euphorbia myrsinites. The gorgeous winter foliage of Euphorbia dulcis ‘Chameleon’ is renowned; the leaves turn a magnificent, rich purple.
In well-drained, wet soil, euphorbias thrive in a sunny or partially shaded location. Species differences in cold tolerance exist. Others prefer a protected location, and some can even stand frost. Most species that are more highly succulent are vulnerable to frost and require protection.
Propagation from cuttings should be done in the spring or summer, but before planting the succulent species in barely damp sand, make sure they have dried out, calloused over, and totally stopped bleeding.
All Euphorbias should be handled with gloves on to prevent skin irritation from the sap, which is a milky white color. Even inadvertent hand contact with the eyes might temporarily impair vision.
Euphorbia pulcherrima, or the poinsettia, is a kind of Euphorbia. Euphorbias are fantastic since they are quite hardy. Due to their poisonous nature, they are rarely attacked by insects and add winter color to even the most uninteresting areas of the garden.
Which Euphorbia is the best?
The 6 Best Spurge Varieties to Plant as Your Secret Weapon
- Characias E. Subsp.
- Myrsinites Euphorbia Above: On a bed of gravel, Euphorbia myrsinites creeps along.
- Eupatorium rigidum
- Martinii x Euphorbia
- Various Euphorbia Amygdaloides
- Portuguese Velvet Euphorbia characias
What Euphorbia species are invasive?
Northern California is home to isolated occurrences of Euphorbia esula, which is displacing native plant species. Prairies, grasslands, and pine savannahs are just a few of the vegetation types it can invade and take over.
Is touching euphorbia poisonous?
Many individuals in the UK like gardening, especially when the weather is cooperative.
But do you know what potentially harmful plants can be in bloom in your garden?
This is all you need to know since Martin Roberts, who starred in Homes under the Hammer, was hospitalized after getting into touch with the plant.
Is every euphorbia poisonous?
When euphorbia plants are cut, a whitish latex sap is released. Frequently poisonous sap is discharged. Toxicology differs within and within genera, nevertheless. Since the time of the ancient Greeks, the caustic properties of the sap have been exploited in medicine to help in wart removal.
Can euphorbia make you blind?
Numerous Euphorbia plants produce toxic latex or sap, which when in contact with the skin or eyes can lead to skin or eye irritation. Ocular inflammation can range from a moderate conjunctivitis to a severe keratouveitis, and inadvertent exposure to the sap has been reported to cause irreversible blindness in several cases.
Where is the origin of Euphorbia?
The family Euphorbiaceae includes the genus Euphorbia. It is commonly recognized that this genus is one of the most varied in the entire plant kingdom, with approximately 2000 species. Euphorbias can range in size from weed-like, low-growing “spurges to magnificent, cactus-like succulents that can reach heights of several meters. One well-known species in this genus is the Poinsetta (E. pulcherrima), a stunning and well-liked houseplant.
The distribution of Euphorbia includes tropical regions of Africa (where the majority of the succulent Euphorbias are found), Madagascar, and the Americas as well as colder, temperate regions of Asia and Europe. Australia and the Pacific Islands both have euphorbia species.
When cut open, the majority of euphorbia species release a milky latex sap. This functions as both a defense mechanism to stop animals from eating the plant and a natural wound-healing mechanism for the plant. If it comes into touch with skin, it can result in excruciating inflammation and a rash. If consumed, some species’ latex can be quite harmful to people. The toxicities of several species are listed in this helpful resource.
This toxin has a di- or tri-terpene ester chemical structure, depending on the species. The distinctive feature that sets all euphorbia species apart from cacti is their milky sap.
A business in Australia is presently investigating the use of E. peplus sap as a skin cancer treatment. According to the notion, the sap kills the cancerous skin cells and forms a scab that finally falls off.
Due to the diversity of the genus Euphorbia, numerous reproductive strategies are seen. Monoecious plants have blooms on the same plant that are both male and female. Some Euphorbias have male and female blooms on separate plants, or they are dioecious.
This genus was given that name by Carolus Linnaeus in honor of the Greek physician Euphorbus, who is credited with discovering a use for Euphorbia as a medicine (most likely Resin Spurge).
This succulent is also a euphorbia. Take note of how the spines protrude in pairs, similar to the species seen to the right.
This Euphorbia has thick, protective skin and spines. As opposed to a cactus, the spines protrude in pairs.