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Oreorchis patens profile

Written by Maggie

Mar 12 2021

Oreorchis patens profile

Oreorchis patens belongs to Orchidaceae, is a monocotyledonous plant, and is a perennial herb. Oreorchis patens height is 20 ~ 40 cm, root long tubular. Leaves are fascicled from stem, linear-lanceolate, slightly leathery, 2 to 3 in a bundle. Oreorchis patens is a traditional Chinese famous flower, is a kind of flower known for its fragrance.

Oreorchis patens is pseudobulus ovoid to subelliptic, with 2-3 nodes. Leaves usually 1, at apex of pseudobulb, linear or narrowly lanceolate. Scape arising laterally from pseudobulb, erect; Racemes are 4.5 -- 15.5 cm long, sparsely bearing several to more than 10 flowers; Flowers are yellowish brown to light yellow, labellum white with purple spots; Petals are narrowly oblong, 7 -- 8 mm long, 1.5 -- 1.8 mm wide, slightly falcate; Lower sepal of Oreorchis patens is 6.5 -- 8.5 mm long, 3-lobed, with short claws at base; Lateral lobes are linear, slightly inward curved, ca. 3 mm long, ca. 0.7 mm wide, apex obtuse. Capsule is oblong.

Oreorchis patens picture

Oreorchis patens

Morphological characteristics of Oreorchis patens

Oreorchis patens belongs to Orchidaceae, is a monocotyledonous plant, and is a perennial herb. Height is 20 ~ 40 cm, root long tubular.Leaves fascicled from stem, linear-lanceolate, slightly leathery, 2 to 3 in a bundle. Oreorchis patens is a traditional Chinese famous flower, is a kind of flowers known for its fragrance.

Oreorchis patens is also called grass orchid, mountain Orchid and fragrant flower. One stem with 1 to 2 flowers, fragrant, Oreorchis patens flowering in spring.

Oreorchis patens scape arising laterally from pseudobulb, erect, 20 -- 52 cm long, with 2 -- 3 tubular sheaths in lower middle part; Racemes are 4.5 -- 15.5 cm long, sparsely bearing several to more than 10 flowers; Bracts are narrowly lanceolate, 2.5 -- 5 mm long; Pedicels and ovaries are 8 -- 12 mm long; Flowers of Oreorchis patens are yellowish brown to light yellow, labellum white with purple spots; Sepals are narrowly oblong, 7 -- 9 mm long, 1.5 -- 2 mm wide, apex slightly obtuse; Lateral sepals are slightly falcate.

Petals of Oreorchis patens are narrowly oblong, 7 -- 8 mm long, 1.5 -- 1.8 mm wide, slightly falcate; Lower sepal is 6.5 -- 8.5 mm long, 3-lobed, with short claws at base; Lateral lobes are linear, slightly inward curved, ca. 3 mm long, ca. 0.7 mm wide, apex obtuse; Middle lobes are sub obovate, 5.5 -- 7 mm long, 5 -- 5.5 mm wide distally, margin irregularly notched; There are 2 hypertrophic longitudinal folds on the labial disc, extending from the near base to the middle, that is, reaching the lower 2/5 of the middle lobe; Stamens are 4-5 mm long, basal hypertrophy and more or less enlarged.

Capsule of Oreorchis patens is oblong, ca. 1.5 cm long and 7 mm wide.

Ecological habits of the Oreorchis patens

Oreorchis patens generally grow on the mountainside and valley wall of deep mountains and valleys, sloping slopes or stone crevices with good water permeability and water retention, beside sparse mountain grasses and under the shade of secondary miscellaneous trees. Or have shade, sunshine time is short or only the place where the star leaks light. Where the air is moist and can circulate, it is sometimes born on the side of mountain streams and cliffs. Oreorchis patens should be grown in a well-ventilated environment. Oreorchis patens like shade, avoid direct sunlight, like wet, avoid dry, 15℃ to 30℃ most suitable for growth. Poor growth above 35℃. Cold temperature below 5℃ will affect its growth, when the orchid is often in a dormant state. If the temperature is too high and the sun is exposed to the sun, the leaves will burn or scorch within a day or two. If the temperature is too low and does not transfer into the house in time, there will be frostbite. 

Oreorchis patens are born under forests, on the edge of forests, in shrubs, on grasslands or beside valleys, at an altitude of 1000-3000 meters.

The propagation of the Oreorchis patens

propagation of Oreorchis patens can be carried out in both spring and autumn, and usually every three years. Any plant with strong growth and dense pseudo corms can be divided, and at least 5 connected pseudo corms should be stored in each cluster after division. Before planting, reduce irrigation water, so that the basin soil is more than. After planting, cover the bottom hole of the pot with broken tiles, then lay coarse stones, which account for 1/5 to 1/4 of the depth of the pot, then put coarse-grained soil and a small amount of fine soil, and then plant with sandy loam rich in humus.

Planting depth to the false corm just buried in the soil strength, basin edge to leave 2 cm along the mouth, spread grass or fine stones, finally pouring permeable, shady place for 10-15 days, keep the soil moist, gradually reduce watering, normal maintenance.

Oreorchis patens

Disease control of Oreorchis patens

Sheath rust

Usually on the upper and lower surfaces of the leaves, rarely on the stem with raised vesicles containing yellow, orange, rusty, or even purplish black powdery spores. Rust is not fatal, nor does it kill the leaves, but it weakens the plant. Prevention methods in addition to cutting off the sick leaves, can be used 65% of the sun zinc powder 500-600 times the liquid or containing copper fungicides spray.

Southern blight  

Mostly in the rainy season. At the beginning of the disease, the leaf base is full of white mycelium. It causes root rot. Prevention and control method: remove fungus basin soil, sprinkle on pentachloronitrobenzene powder or lime. Radical cure method: pay attention to ventilation and light, basin soil drainage is good.Serious diseased plants are burned.

Anthrax

It occurs all the year round, and is more prevalent in hot and rainy seasons, especially in orchid. The spots first extend from the tip of the leaf to the rhizome, brown at the beginning, and then gradually expand and increase, there are many dry black spots, which lead to the death of the whole plant in serious cases. Prevention and control methods: in addition to actively change the environmental conditions, in the onset period, can be used first with 50% methyl tobujin wettable powder 800-1500 times the liquid spray treatment, once every 7-10 days; Then supplemented with 1% equivalent Bordeaux liquid, once every half a month, continuous spray 3-5 times.

Scale insects

Commonly known as "lice", they propagate fastest in conditions of high temperature, humidity and poor air flow.It can be sprayed with 1% diethoate oxide or 1500 times 50% mala sulfur during incubation period.If the number of pots is not much, it can also be brushed manually.

The distribution of the Oreorchis patens

Oreorchis patens is distributed from China, Japan, the Korean Peninsula to Siberia, mainly distributed in the Yangtze River valley and southwest China.

The function and use of Oreorchis patens

Oreorchis patens with unique leaves, flowers, fragrance unique four clear (Qi clear, color clear, spirit clear, rhyme clear), give people with a very lofty, elegant and beautiful image. Oreorchis patens is the treasure of Yunnan orchid hui. Oreorchis patens has bright green leaves all year round with serrated edges. Green bright leaves some graceful, tall and unrestrained. Some slightly curved arc shape, graceful appearance. The yet-to-bloom Oreorchis patens are also a delight to behold.

Oreorchis patens