this thing called the periwinkle, which is very common ah. Botanical name: Vinca
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Scientific Name: Catharanthus roseus (L.) Don
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Subject: Chief of oleander flowers is
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alias: periwinkle, Japanese Nisshin, Japan and flowers, four seasons spring, five plum, goose to red
Origin: Madagascar, India, many of the existing horticultural cultivars.
distribution:
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origin of the Mediterranean, India and tropical America. Chinese culture is not a long history of Vinca, cultivated mainly in the south of the Yangtze River, Guangdong, Guangxi, Yunnan and other provinces (autonomous regions) cultivation more common. Currently, many provinces and cities from abroad Vinca new varieties for ornamental plants and planted tank. As the heat is strong, long flowering, colorful, rapid development in herbaceous flowers in a certain position has been occupied.
morphology:
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periwinkle is a perennial herb. Stems erect, much branched. Leaves opposite, long oval-shaped, short petiole, entire, glabrous on both sides, the main vein white clear. Cyme top students. Flowers red, purple, pink, white, yellow and other colors, butterfly-shaped corolla tall, 5 crack, dark flower center holes. Periwinkle shoots the top of each grow one leaf, leaves that emerge between the two axillary flowers, so it's more special flowers, flowering expertise, flower potential lush and vibrant. Bloom from spring to autumn from uninterrupted, so the "day of spring 'reputation.
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* Warning * Vinca is a folder Hsinchu plant, its stems and leaves and broken out of the white milk, a highly toxic, do not be eating!
Growth Habit:
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like warm, slightly dry and sunny environment. Optimum growth temperature of 3 to 7 months for 18 ~ 24 ℃, 9 months to March next year for the 13 ~ 18 ℃, winter temperatures not lower than 10 ℃.
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periwinkle avoid wet the fear of floods, basin water should not be too much, too wet affecting growth and development. In particular, the plant should be strictly controlled indoor winter watering to dry as well, or vulnerable to cold. Open field cultivation, summer showers, pay attention to drainage, so as not to cause the entire piece Shoulao death.
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periwinkle plants for the hi light of the growing season must have sufficient sunshine, shiny green leaves, bright colors. If long-term growth in the shade at the leaves yellow leaves.
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should be fertile and well drained soil, resistant infertile soil, but avoid alkaline. Compaction, poor ventilation of clayey soil, the results of poor plant growth, yellow leaves, not flowers.
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application value:
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periwinkle is not only graceful, flowering talent for flower arrangement, flower border, but also for ornamental plants. Or a medicine against cancer. According to modern scientific research, contains 55 kinds of Vinca alkaloids. Including vinblastine and vincristine for the treatment of choriocarcinoma and other malignant tumors of God, and lymphosarcoma in children with acute leukemia have a certain effect, is currently the most widely used anti-cancer herbal source.
kinship:
branching and morphological classification of modern DNA evidence, Man periwinkle and aquatic plants have a close sister group relationship. Tah between his system (1980) that included gentian head Apocynaceae, Apocynaceae and is in the same gentian Gentianaceae-head, and are daisy-subclass. Courant Qwest System (1981) also found Apocynaceae classified gentian head (with head and Gentianaceae), which are covered by subclass Ju. Modern DNA determination reports, Apocynaceae Apocynum is with the Division of gentian Gentiana, algae century exchange a case of a sister group relationship. Dialectical relationship between the truth is an intermediary. Apocynaceae Although terrestrial plants (aquatic not found), but Gentianaceae divided into two subfamilies, namely, gentian subfamily (terrestrial herbaceous) and sleep subfamily food (aquatic plants) subfamily of the famous dishes sleep The food is sleeping, apricot dishes are aquatic plants. Therefore, DNA can be further determined that, in order to form the main taxonomic identification Gentianaceae Apocynaceae have close relatives with the right edge of the relationship; and proved Apocynaceae Apocynum genus, and so on and spread periwinkle Gentianaceae sleep is food, apricot dish is the sister group of aquatic plants have a close relationship. pets question and answers,www.5d2d.com
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main varieties
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common varieties:
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1, apricot hi (ApricotDelight) , height 25 cm, pollen, red, flower diameter 4 cm, red-eye.
2, Blue Pearl (BluePearl), flowers blue, looked down upon.
3, Refrigerator (Cooler) series, in which Grapes (Grape) rose red flowers.
4, pepper-like mint (Poppermint), flowers white, red-eye.
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5, ice powder (IcyPink), pollen red.
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6, raspberry red (RaspberryRed), dark red flowers looked down upon.