Categories
Herbs & Plants

Periwinkle Plant

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Botanical Name :Vinca minor
Family :Dogbane/Apocynaceae
Synonym(s): lesser periwinkle, myrtle
Kingdom:
Plantae
Order: Gentianales
Genus: Vinca
Species: V. minor

Habitat : .It is a plant native to central and southern Europe, from Portugal and France north to the Netherlands and the Baltic States, and east to the Caucasus, and also in southwestern Asia in Turkey.  It has been in North America since the 1700s. It has the capability of taking over large tracts of land by spreading out of control. In many states, such as Michigan, the periwinkle plant has overtaken the natural forest ground cover in deciduous woodlands.

Description:
It is a trailing, viny subshrub, spreading along the ground and rooting along the stems to form large clonal colonies and occasionally scrambling up to 40 cm high but never twining or climbing. The leaves are evergreen, opposite, 2-4.5 cm long and 1-2.5 cm broad, glossy dark green with a leathery texture and an entire margin. The flowers are solitary in the leaf axils and are produced mainly from early spring to mid summer but with a few flowers still produced into the autumn; they are violet-purple (pale purple or white in some cultivated selections), 2-3 cm diameter, with a five-lobed corolla. The fruit is a pair of follicles 2.5 cm long, containing numerous seeds.

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The closely related species Vinca major is similar but larger in all parts, and also has relatively broader leaves with a hairy margin.


Cultivation:

The species is commonly grown as a groundcover in temperate gardens for its evergreen foliage, spring and summer flowers, ease of culture, and dense habit that smothers most weeds. The species has few pests or diseases outside its native range and is widely naturalised and classified as an invasive species in parts of North America . There are numerous cultivars, with different flower colours and variegated foliage, including ‘Argenteovariegata’ (white leaf edges), ‘Aureovariegata’ (yellow leaf edges), ‘Gertrude Jekyll’ (white flowers), and ‘Plena’ (double flowers).

Other vernacular names used in cultivation include small periwinkle, common periwinkle, and sometimes in the United States, myrtle or creeping myrtle, although this is misleading, as the name myrtle normally refers to Myrtus species.

The periwinkle plant is extremely hardy and grows in almost any type of soil. It prefers shady placement but too much sun won’t be an insurmountable problem. The plant will not live over the winter in locations that go beyond thirty below zero. The periwinkle can be propagated by root cuttings or by seeds. It will grow where many other plants will not, such as in sandy soil and rock gardens. It is also deer resistant. After the flowers have finished blooming, the periwinkle plant grows cylindrical fruit up to two inches long. Each contains three to five seeds which are released to the wind.

If you wish to grow periwinkles from seed, you can start them inside eight to ten weeks before the final frost or outside after the last frost. Inside you can use a regular plant starter mix and outside you should plant in loose soil fertilized with compost. Simply cover the seeds with dirt, water them, and you will be growing periwinkle in no time at all. Do not transplant any seedlings grown indoors, outside, until all danger of frost has past.

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Medicinal Uses:

The periwinkle plant is used by herbalists as an astringent. Its major use throughout the centuries has been to help treat menstrual periods where there is too much heavy bleeding. It can be used during your period or in-between periods. It is also used to treat urinary tract problems, such as hematuria, or blood in the urine. Periwinkle has been used to treat colitis and diarrhea, plus other types of digestive problems which involve bleeding. Some people also use periwinkle in the treatment of such conditions as nose bleeds, bleeding gums, ulcers in the mouth, and sore throats. In medicinal use, the periwinkle plant is used in tinctures and infusions.


Other Uses:

It is an evergreen type of plant that is used for ground cover. In many locations, the periwinkle plant is considered invasive and cannot be legally planted, so check your local statutes before growing Vinca minor.

 

As a ground cover, the periwinkle plant is like a long, green mat, with growth only about six inches high. The leaves are bluish-green and it forms stems approximately two feet long before clamping down roots. Periwinkle blooms in the spring (March) with flowers which are lilac-blue or purple.

Disclaimer:The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider.


Resources;

http://en.wikipedia.org/wiki/Vinca_minor
http://www.gardeningcentral.org/periwinkle_plant/periwinkle_plant.html
http://www.invasive.org/species/subject.cfm?sub=3081
http://plants.usda.gov/java/profile?symbol=VIMI2&photoID=vimi2_003_avp.jpg
http://www.invasive.org/species/subject.cfm?sub=3081

Categories
Herbs & Plants

Catharanthus (Nayantara)

Giant steps periwinkle (Vinca major)
Image via Wikipedia

Botanical Name:Catharanthus roseus (L.) G. Don (Apocynaceae)
Family: Apocynaceae
Genus: Catharanthus
G.Don
Syn: Lochnera rosea (L.) Spach, Vinca rosea L.
English names: Madagascar periwinkle, Old maid, Red periwinkle.
Vernacular names: Ben: Nayantara; Hin : Sada sawagon; Lad: Swet chandu; Mal: Mar: Ushamalari;Sadaphul; Ori : Ainskati; Pun: Rattanjot; Tam: Sudukadu Mallikai; Tel: Billaganneru.

Trade name: Nayantara.
Habitat:A native of West Indies; commonly grown in gardens throughout India;Bangladesh and Pakistan.


Description:
An evergreen shrub, it grows to a height of 1m with a spread of 1m. The stem is short, erect and branching; the leaves are glossy gree, oval, 5cm long and opposite acuminate; the flowers are soft pink, tinged with red, 5 petalled, open, tubular and 4cm across, appearing in spring and autumn.

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Catharanthus coriaceus Markgr. Madagascar: A native of tropical Africa and Madagascar, it prefers rich, well drained, moist soils in a protected, sunny position, and is drought and frost tender.
Propagation is by seed and by cuttings.
A small herb or subshrub, up to 75 cm high; leaves elliptic-ovate to oblong, 4-10 by 2-4 cm, glabrous to puberulous, base acute or cuneate, apex obtusely apiculate, lateral nerves 10-12 pairs, petiole 1.0-1.5 cm; flowers in axillary or terminal cymes; solitary or paired, shortly pedicellate, pink or white or white with pink or yellow ring in orifice region; mericarps 3-4 by 0.3 cm, puberulous.
Flowering and Fruiting: throughout the year.

Catharanthus (Madagascar Periwinkle) is a genus of eight species of herbaceous perennial plants, seven endemic to the island of Madagascar, the eighth native to the Indian subcontinent in southern Asia.

Species :

Catharanthus coriaceus Markgr. Madagascar.
Catharanthus lanceus (Bojer ex A.DC.) Pichon. Madagascar.
Catharanthus longifolius (Pichon) Pichon. Madagascar.
Catharanthus ovalis Markgr. Madagascar.
Catharanthus pusillus (Murray) G.Don. Indian subcontinent.
Catharanthus roseus (L.) G.Don. Madagascar.
Catharanthus scitulus (Pichon) Pichon. Madagascar.
Catharanthus trichophyllus (Baker) Pichon. Madagascar.

Ecology and cultivation: Plains from the coasts, in wastelands, fallow fields, less on the hills 800-1400 m, also widely cultivated.

The species are self-propagating from seed; the seeds require a period of total darkness to germinate. Cuttings from mature plants will also root readily.

One species, C. roseus, has been widely cultivated and introduced, becoming an invasive species in some areas.

Chemical contents : Root-bark: vincaline I & II; Root: vinblastine or vinleukoblastine (VLB), vincristine or vinleurocristine (VCR), ursolic acid, oleanolic acid, ajmalicine, alstonine; Stem: vinca rodine, vincoline, vinamidine,leurocolombine, vincathicine, vincubine; Leaf: leurosine, vindoline, catharanthine, lochnerine, tetrahydroalstonine, roseoside, essential oil; Seed: vincedine, vincedicine, tabersonine.

Medicinal Uses:
C. roseus has gained interest from the pharmaceutical industry; the alkaloids vincristine and vinblastine from its sap have been shown to be an effective treatment for leukaemia. Although the sap is poisonous if ingested, some 70 useful alkaloids have been identified from it. In Madagascar, extracts have been used for hundreds of years in herbal medicine for the treatment of diabetes, as hemostatics and tranquilizers, to lower blood pressure, and as disinfectants. The extracts are not without their side effects, however, which include hair loss.

In 1923, considerable interest was aroused in the medical world by the statement that this species of Vinca had the power to cure diabetes, and would probably prove an efficient substitute for Insulin, but V. major has long been used by herbalists for this purpose. Vincristine, a major chemotherapy agent for leukemia, and vinblastin (for Hodgkin’s disease) are derived from the plant.  The anti-cancer constituents are very strong and should only be taken under the supervision of a qualified health care practitioner.  Use as a fluid extract.  It has also been used in traditional herbal medicine to treat wasp stings (India), stop bleeding (Hawaii), as an eyewash (Cuba), and to treat diabetes (Jamaica); contains the alkaloid alstonine which can reduce blood pressure.

Vinca alkaloids:
Vinca alkaloids are anti-mitotic and anti-microtubule agents. They are nowadays produced synthetically and used as drugs in cancer therapy and as immunosuppressive drugs. These compounds are vinblastine, vincristine, vindesine and vinorelbine. Periwinkle extracts and derivatives, such as vinpocetine, are also used as nootropic drugs.

Catharanthus lanceus contains up to 6% yohimbine in its leaves

Indian Traditional use: BODO: (i) Plant: in cancer, diabetes, (ii ) Leaf: in menorrhagia; LODHA : (i) Root-paste: in septic wounds, (ii) Root-decoction (with paste of long peppers) : in fever, (iii) Leaf-juice: in blood dysentery, (iv) Leaf-decoction: to babies in gripping pain; SANTAL : (i) Latex: in scabies, (ii) Seed-powder (with decoction of black pepper) : in epilepsy; ETHNIC COMMUNITIES OF EAST GODAVARI DISTRICT: Root: in cancerous wounds.

Modern use: Plant-extract: antimitotic; Root (alkaloids) : in cancer, and as emetic, hypotensive, sedative and antiviral.

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MADAGASCAR PERIWINKLE (Vinca rosea, Linn.)

Catharanthus roseus (Madagascar Periwinkle)

.Description and Natural History of the Periwinkle
Vinblastine and vincristine are alkaloids found in the Madagascar periwinkle

Disclaimer:
The information presented herein is intended for educational purposes only. Individual results may vary, and before using any supplements, it is always advisable to consult with your own health care provider

Resources:
http://en.wikipedia.org/wiki/Madagascar_periwinkle
http://www.bsienvis.org/medi.htm#Bauhinia%20vahlii
http://shaman-australis.com.au/shop/index.php?cPath=21_26_66

http://www.herbnet.com/Herb%20Uses_LMN.htm

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