Opitandra ( lat. Opithandra ) is a genus of the Gesneriaceae family ( lat. Gesneriaceae ), which includes about 10 species of perennial terrestrial rhizome grasses . It is used in decorative floriculture.
| Opitandra | |||||||||||||||||||
 Opithandra primuloides | |||||||||||||||||||
| Scientific classification | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| |||||||||||||||||||
| International scientific name | |||||||||||||||||||
Opithandra BLBurtt | |||||||||||||||||||
| Kinds | |||||||||||||||||||
See text | |||||||||||||||||||
Name Etymology
The name of the genus comes from the Greek. όπιθη "opithē" - behind, and Greek. ανηρ, ανδρος "anēr, andros" - a man, indicating that the rear pair of stamens is fertile .
Botanical Description
Perennial ground rhizome stemless herbs . Leaves are alternate or rosette, the base is wedge-shaped to heart-shaped, petiolate , velvety-pubescent or woolly on both sides, or the abaxial side is pubescent, or the veins are pubescent. Inflorescences are axillary, drooping, cimic on peduncles - one-flowered or multi-flowered curl with two opposite bracts . Peduncles longer than leaves, drooping. Sepals are free, lanceolate. Calyx actinomorphic , 5-membered; segments are equal. Corolla pink or purple, inside with a rare pubescence in the form of stripes or glandular hairs; the tube is cylindrical or funnel-shaped, can be slightly protruded in the abaxial part, the length is 1.5-4 times longer than the limb; limb lobes equal or limb distinctly or obscurely bilobate. the adaxial lip is 2-lobed, the abaxial lip is 3-lobed. fertile stamens 2, equal in length to the corolla, grown to the adaxial side of the corolla tube near the middle, less often near the basal part of the corolla. Staminodynia - 1-3 or absent; anthers are sometimes free, open along longitudinal grooves. Nectar ring or cupped. Ovary upper, cylindrical, gradually tapering into a column, stigma 1, capitate, whole or 2 whole or 2-lobed. The fruit is a long capsule , much longer than the calyx, opens loculicidally to the base, 2-fold, not twisted. Seeds without appendages.
Habitat and habitat
Southern China - the provinces of Sichuan , Guangxi , Guangdong , Jiangxi , Fujian , Western Hunan , Guizhou ; Japan , in the west of the island of Honshu , a typical species inhabits the Shikoku and Kyushu islands. In China, it grows as a geophyte on river rocks or in shaded places in mountain forests, at an altitude of 500-900 above the sea level . m
Economic Significance and Application
In culture, a rare plant. Grown as an ornamental plant in rockeries and rock gardens ; in temperate climates - like a seasonal plant on balconies and terraces.
Relatively unpretentious and cold-resistant, need high humidity, tolerate mild winters, stored under snow.
Views
According to the database of The Plant List , the genus includes 3 species [2] :
- Opithandra dalzielii ( WWSm. ) BLBurtt
- Opithandra fargesii ( Franch. ) BLBurtt
- Opithandra primuloides ( Miq. ) Burtt typus
Notes
- ↑ For the conventionality of indicating the class of dicotyledons as a superior taxon for the plant group described in this article, see the APG Systems section of the Dicotyledonous article .
- ↑ Opithandra . The Plant List . Version 1.1. (2013). Date of treatment August 20, 2016.
Literature
- All about indoor violets. / Van der Neer, - SPb .: S3KEO Crystal LLC, Moscow: Onyx, 2007. - Opandandra - p. 212
- Flora of China 18, 289–291 p., 1998. (PDF)