Showing posts with label weed. Show all posts
Showing posts with label weed. Show all posts

Wednesday, 27 July 2022

DESKTOP 3279 - GOATSBEARD

Tragopogon, also known as goatsbeard or salsify, is a genus of flowering plants in the Asteraceae (sunflower) family. It includes the vegetable known as salsify, as well as a number of common wild flowers, some of which are usually regarded as weeds. Salsifies are forbs growing as biennial or perennial plants. They have a strong taproot and milky sap. They generally have few branches, and those there are tend to be upright. Their leaves are somewhat grass-like.

This post is part of the Wordless Wednesday meme,
and also part of the My Corner of the World meme,
and also part of the Nature Notes meme.

Thursday, 16 June 2022

DESKTOP 3240 - PERIWINKLE

Vinca major, with the common names bigleaf periwinkle, large periwinkle, greater periwinkle and blue periwinkle, is species of flowering plant in the family Apocynaceae, native to the western Mediterranean. Growing to 25 cm tall and spreading indefinitely, it is an evergreen perennial. Vinca major is a commonly grown ornamental plant in temperate gardens for its evergreen foliage, spring flowers, and groundcover or vine use. It can become weedy, especially in moister climates.

This post is part of the Floral Friday Fotos meme


Thursday, 11 March 2021

DESKTOP 2779 - DURANTA

Duranta erecta is a species of flowering shrub in the verbena family Verbenaceae, native from Mexico to South America and the Caribbean. It is widely cultivated as an ornamental plant in tropical and subtropical gardens throughout the world, and has become naturalised in many places. It is considered an invasive species in Australia, China, South Africa and on several Pacific Islands.

The genus name is in honour of Castore Durante, a fifteenth-century Italian botanist. The specific epithet erecta means "upright" in Latin. The plant is also known as D. repens, from the Latin for "creeping". The latter name was originally used to identify smaller-leaved varieties of the species. Common names include golden dewdrop, pigeon berry, and skyflower. In Mexico, the native Nahuatl name for the plant is xcambocoché. In Tonga it is known as mavaetangi (tears of departure).

Duranta is registered as an invasive weed by many councils of Australia. It is a prolific, fast growing weed that is spread by birds from domestic areas to natural reserves. It was introduced and marketed as a hedge plant some years ago. Many people now fight to keep this thorny pest under control. It is highly ranked in the most invasive weeds in Australia.

Duranta erecta is a sprawling shrub or (infrequently) a small tree. It can grow to 6 m tall and can spread to an equal width. Mature specimens possess axillary thorns, which are often absent on younger specimens. The leaves are light green, elliptic to ovate, opposite, and grow up to 7.5 cm long and 3.5 cm broad, with a 1.5 cm petiole. The flowers are light-blue or lavender, produced in tight clusters located on terminal and axillary stems, blooming almost all year long. 

The fruit is a small globose yellow or orange berry, up to 11 mm diameter and containing several seeds. The leaves and berries of the plant are toxic, and are confirmed to have killed children, dogs and cats. However, songbirds eat the fruit without ill effects. The cultivar illustrated is the hybrid "China Girl".

This post is part of the Floral Friday Fotos meme.


Wednesday, 13 January 2021

DESKTOP 2722 - SUNSHINE

Sun backlighting leaves of Coprosma repens, which is a species of flowering shrub or small tree of the genus Coprosma, in the family Rubiaceae, native to New Zealand. Common names include taupata, mirror bush, looking-glass bush, New Zealand laurel and shiny leaf. In Australia it has become naturalised in coastal areas of Victoria, New South Wales, South Australia and Tasmania, to the extent that it is now classified as an environmental weed.

This post is part of the Wordless Wednesday meme,
and also part of the My Corner of the World meme,
and also part of the Nature Notes meme.


Thursday, 19 November 2020

DESKTOP 2667 - SOWTHISTLE

Sonchus oleraceus, with many common names including common sowthistle, sow thistle, smooth sow thistle, annual sow thistle, hare's colwort, hare's thistle, milky tassel, milk thistle, soft thistle, or swinies, is a plant in the dandelion tribe within the daisy family. It is native to Europe and western Asia. Its specific epithet oleraceus means "vegetable/herbal". The common name 'sow thistle' refers to its attractiveness to swine, and the similarity of the leaf to younger thistle plants. The common name 'hare's thistle' refers to its purported beneficial effects on hare and rabbits.
 
Leaves are eaten as salad greens or cooked like spinach. This is one of the species used in Chinese cuisine as kŭcài (苦菜; lit. bitter vegetable). The younger leaves are less bitter and better to eat raw. Steaming can remove the bitterness of older leaves. The younger roots are also edible and can suffice as a coffee substitute.

This post is part of the Floral Friday Fotos meme.


Thursday, 17 September 2020

DESKTOP 2604 - STORK'S BILL

Erodium malacoides is a species of Spring-flowering plant in the geranium family known by the common names Mediterranean stork's bill, soft stork's-bill and oval heron's bill. This is a weedy annual or biennial herb which is native to much of Eurasia and North Africa but can be found on most continents where it is an introduced species.

The young plant grows a number of ruffled green leaves radially outward flat against the ground from a knobby central stem. The stem may eventually reach half a metre in height with more leaves on long, hairy petioles. It bears small flowers with fuzzy, soft spine-tipped sepals and five lavender to magenta petals. The fruit is green with a glandular body about half a centimetre long and a long, pointed style two to three centimetres in length.

This post is part of the Floral Friday Fotos meme.


Thursday, 13 August 2020

DESKTOP 2569 - WILD LEEK

The three-cornered leek (Allium triquetrum) is an invasive weed in the Amaryllidaceae family, which is native to the Mediterranean and which can carpet large areas very quickly because of its rapidly germinating seeds that quickly form a dense clump of leaves and flowers. Both the English name and the specific epithet triquetrum refer to the three-cornered shape of the flower stalks. In New Zealand this plant is known as "onion weed". 

Pretty though this three-cornered leek may be, don't be tempted to pick it as a cut flower because it does reek strongly of an oniony smell! However, you can pick it for eating, as all parts of the plant are edible. The leaves and flowers can be added to salads, and the bulbs can be substituted for garlic. The taste can be described as subtly flavoured like a leek or a spring onion. It may be consumed raw or cooked.
 
This post is part of the Floral Friday Fotos meme.

Wednesday, 12 February 2020

DESKTOP 2386 - CALLA HEART

Zantedeschia aethiopica (known as calla lily and arum lily) is a species in the family Araceae, native to southern Africa in Lesotho, South Africa, and Swaziland. It is a rhizomatous herbaceous perennial plant, evergreen where rainfall and temperatures are adequate, deciduous where there is a dry season. Its preferred habitat is in streams and ponds or on the banks. In some countries (e.g. New Zealand) it may be considered an introduced weed.

It grows to 0.6–1 m tall, with large clumps of broad, arrow shaped dark green leaves up to 45 cm long. The Inflorescences are large and are produced in spring, summer and autumn, with a pure white spathe up to 25 cm and a yellow spadix up to 90 mm long. Z. aethiopica contains calcium oxalate, and ingestion of the raw plant may cause a severe burning sensation and swelling of lips, tongue, and throat; stomach pain and diarrhoea may occur.

HAPPY VALENTINE'S DAY!

This post is part of the Wordless Wednesday meme,
and also part of the My Corner of the World.

Thursday, 16 January 2020

DESKTOP 2359 - POPPY

Papaver argemone is a species of the genus Papaver. Its common names include long pricklyhead poppy, prickly poppy and pale poppy. Its native range includes parts of Eurasia and North Africa, and it is cultivated as an ornamental plant. It can be found growing wild in parts of North America, where it is an introduced species.

This annual herb grows up to 50 cm, Its 15–50 cm long, branching stems are coated in stiff prickly hairs. The fern-like green, leaves at the base of the plant have stalks, but upper leaves are stalk-less. They can be up to 20 cm long. It blooms in spring to summer, between May and July. The flowers have four, slightly overlapping red petals, around a dark base. They can measure 2–5.5 cm across, with pale blue anthers and 4-6 stigmas.

Later, the plant produces a seed capsule, oblong to clavate (club-like) shaped with ribs and up to 2 cm long. The plant contains alkaloids, explaining its traditional use in herbal medicines. It also means the plant is not eaten much by grazing animals. It is native to Europe and countries around the Mediterranean. It grows in fields and disturbed soils (including ploughed). It is normally found at 0–300 m above sea level.

This post is part of the Floral Friday Fotos meme.

Sunday, 13 October 2019

DESKTOP 2263 - SPRING

Arctotheca calendula is a plant in thee Asteraceae family that originates from the Cape Province in South Africa. It is listed as a noxious weed. The plant is a squat perennial or annual which grows in rosettes and sends out stolons and can spread across the ground quickly. The leaves are covered with white woolly hairs, especially on their undersides. The leaves are lobed or deeply toothed. Hairy stems bear daisy-like flowers with small yellow petals that sometimes have a green or purple tint surrounded by white or yellow ray petals extending further out from the flower centres.

It is cultivated as an attractive ornamental groundcover but has invasive potential when introduced to a new area. The plant can reproduce vegetatively or via seed. Seed-bearing plants are most likely to become weedy, taking hold most easily in bare or sparsely vegetated soil or disturbed areas. It is poisonous to cattle.

This post is part of the Floral Friday Fotos meme,
and also part of the My Sunday Best meme.

Thursday, 4 July 2019

DESKTOP 2163 - APTENIA

Aptenia cordifolia is a species of succulent plant in the Aizoaceae (iceplant) family known by the common names heartleaf iceplant and baby sun rose. Perhaps the most common plant seen under this name is actually Aptenia 'Red Apple', a hybrid with red flowers and bright green leaves, whose parents are A. cordifolia and A. (Platythyra) haeckeliana. The true species of A. cordifolia has magenta purple flowers and more heart-shaped, mid-green, textured leaves.

Native to southern Africa, this species has become widely known as a hardy ornamental plant. This is a mat-forming perennial herb growing in flat clumps on the ground from a woody base. Stems reach up to about 60 centimeters long. The bright green leaves are generally heart-shaped and up to 3 centimeters long. They are covered in very fine bumps. 

Bright pink to purplish flowers appear in the leaf axils and are open during the day. The fruit is a capsule just over a centimetre long. The hybrid, Aptenia 'Red Apple', has, in some areas, escaped cultivation and now grows as an introduced species. Its far more vigorous growth and ability to root from small bits of stem makes it a poor choice for planting adjacent to wild lands as it can prove to be quite invasive and can become weedy.

This post is part of the Floral Friday Fotos meme.

Thursday, 14 March 2019

DESKTOP 2051 - GERMANDER SPEEDWELL

Veronica is the largest genus in the flowering plant family Plantaginaceae, with about 500 species. Taxonomy for this genus is currently being reanalysed, with the genus Hebe and the related Australasian genera Derwentia, Detzneria, Chionohebe, Heliohebe, Leonohebe and Parahebe included by many botanists. Common names include speedwell, bird's eye, and gypsyweed.

The species are herbaceous annuals or perennials, and also shrubs or small trees if Hebe is included. Most of the species are from the temperate Northern Hemisphere, though with some species from the Southern Hemisphere. Veronica chamaedrys (Germander Speedwell, Bird's-eye Speedwell - shown below) is a species of Veronica, native to Europe and northern Asia. It is found on other continents as an introduced species.

It is a herbaceous perennial plant with hairy stems and leaves. It can grow to 25 cm tall, but is normally about 12 cm tall. The flowers are blue, with a four-lobed corolla. The form of the leaves are similar to white deadnettle. The 2 to 4 mm wide blossoms of this plant wilt very quickly upon picking, which has given it the ironic name "Männertreu", or "men's faithfulness" in German.

This post is part of the Floral Friday Fotos meme.

Sunday, 10 March 2019

DESKTOP 2047 - SPEAR THISTLE

Cirsium vulgare (spear thistle) is a species of the genus Cirsium, in the family Asteraceae, native throughout most of Europe (north to 66°N, locally 68°N), Western Asia (east to the Yenisei Valley), and northwestern Africa (Atlas Mountains). It is also naturalised in North America, Africa, and Australia and is as an invasive weed in some areas. It is the national flower of Scotland.

It is a tall biennial or short-lived monocarpic thistle, forming a rosette of leaves and a taproot up to 70 cm long in the first year, and a flowering stem 1–1.5 m tall in the second (rarely third or fourth) year. The stem is winged, with numerous longitudinal spine-tipped wings along its full length. The leaves are stoutly spined, grey-green, deeply lobed; the basal leaves up to 15–25 cm long, with smaller leaves on the upper part of the flower stem; the leaf lobes are spear-shaped (from which the English name derives).

The inflorescence is 2.5–5 cm diameter, pink-purple, with all the florets of similar form (no division into disc and ray florets). The seeds are 5 mm long, with a downy pappus, which assists in wind dispersal. As in other species of Cirsium (but unlike species in the related genus Carduus), the pappus hairs are feathery with fine side hairs.

Spear thistle is often a ruderal species, colonising bare disturbed ground, but also persists well on heavily grazed land as it is unpalatable to most grazing animals. Nitrogen-rich soils help increase its proliferation. The flowers are a rich nectar source used by numerous pollinating insects, including honey bees, wool-carder bees, and many butterflies.

The seeds are eaten by goldfinches, linnets and greenfinches. The seeds are dispersed by wind, mud, water, and possibly also by ants; they do not show significant long-term dormancy, most germinating soon after dispersal and only a few lasting up to four years in the soil seed bank. Seed is also often spread by human activity such as hay bales.

This post is part of the My Sunday Best meme.

Sunday, 24 February 2019

DESKTOP 2033 - STELLARIA

Stellaria media, chickweed, in the family Caryophyllaceae, is a cool-season annual plant native to Europe, which is often eaten by chickens. It is sometimes called common chickweed to distinguish it from other plants called chickweed. Other common names include chickenwort, craches, maruns, winterweed. The plant germinates in autumn or late winter, then forms large mats of foliage. Flowers are very tiny and white, followed quickly by the seed pods. This plant flowers and sets seed at the same time.

Stellaria media is edible, delicious and nutritious, and is used as a leaf vegetable, often raw in salads. It is one of the ingredients of the symbolic dish consumed in the Japanese spring-time festival, Nanakusa-no-sekku. The plant has medicinal uses and is a common ingredient in folk medicine. It has been used as a remedy to treat itchy skin conditions and pulmonary diseases. 17th century herbalist John Gerard recommended it as a remedy for mange. Modern herbalists mainly prescribe it for skin diseases, and also for bronchitis, rheumatic pains, arthritis and period pain. A poultice of chickweed can be applied to cuts, burns and bruises. Not all of these uses are supported by scientific evidence.

This post is part of the My Sunday Best meme.


Wednesday, 23 January 2019

DESKTOP 2002 - MALLOW

Malva sylvestris is a species of the Mallow genus Malva in the family of Malvaceae and is considered to be the type species for the genus. Known as common mallow to English speaking Europeans, it acquired the common names of cheeses, high mallow and tall mallow (mauve des bois by the French) as it migrated from its native home in Western Europe, North Africa and Asia through the English speaking world. M. sylvestris is a vigorously healthy plant with showy flowers of bright mauve-purple, with dark veins; a handsome plant, often standing 1 metre high and growing freely in fields, hedgerows and in fallow fields.

This post is part of the Floral Friday Fotos meme.

Thursday, 13 December 2018

DESKTOP 1960 - DWARF MALLOW

Malva neglecta is an annual in the Malvaceae family growing to 0.6 m. It is also known as common mallow in the United States and also buttonweed, cheeseplant, cheeseweed, dwarf mallow and roundleaf mallow. This plant is often consumed as a food, with its leaves, stalks and seed all being considered edible. This is especially true of the seeds, which contain 21% protein and 15.2% fat.

This post is part of the Floral Friday Fotos meme

Thursday, 11 October 2018

DESKTOP 1897 - DAISIES

Arctotheca calendula is a plant that originates from the Cape Province in South Africa. It is listed as a noxious weed. The plant is a squat perennial or annual which grows in rosettes and sends out stolons and can spread across the ground quickly. The leaves are covered with white woolly hairs, especially on their undersides. The leaves are lobed or deeply toothed. Hairy stems bear daisy-like flowers with small yellow petals that sometimes have a green or purple tint surrounded by white or yellow ray petals extending further out from the flower centres. It is cultivated as an attractive ornamental groundcover but has invasive potential when introduced to a new area. The plant can reproduce vegetatively or via seed. Seed-bearing plants are most likely to become weedy, taking hold most easily in bare or sparsely vegetated soil or disturbed areas. It is poisonous to cattle.

This post is part of the Floral Friday Fotos meme.

Thursday, 20 September 2018

DESKTOP 1877 - CAPEWEED

Arctotheca calendula is a plant in the sunflower family commonly known as capeweed, plain treasureflower, cape dandelion, or cape marigold because it originates from the Cape Province in South Africa.cIt is also found in neighbouring KwaZulu-Natal. Arctotheca calendula is naturalised in California, Spain, Portugal, Italy, Australia, and New Zealand, and considered a noxious weed in some of those places.

Arctotheca calendula is a squat perennial or annual which grows in rosettes and sends out stolons and can spread across the ground quickly. The leaves are covered with white woolly hairs, especially on their undersides. The leaves are lobed or deeply toothed. Hairy stems bear daisy-like flowers with small yellow petals that sometimes have a green or purple tint surrounded by white or yellow ray petals extending further out from the flower centres.

It is cultivated as an attractive ornamental groundcover but has invasive potential when introduced to a new area. The plant can reproduce vegetatively or via seed. Seed-bearing plants are most likely to become weedy, taking hold most easily in bare or sparsely vegetated soil or disturbed areas.

This post is part of the Floral Friday Fotos meme.