Boea
| Boea | ||||||||||||
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| Boea | ||||||||||||
| Comm. ex Lam. |
OEA is a genus in the family of Gesneriad (Gesneriaceae). About 20 species thrive in Australia , China , India , Malaysia , Burma , Philippines , Polynesia , Solomon Islands , Thailand , Papua New Guinea , Indonesia , Nepal , Bhutan , Cambodia , Vietnam and Laos . Few Boea species are also used as house plants . The generic name honors the French clergyman François Beau (1723-1804).
description
Appearance
Some of the Boea species are also known as "Resurrection Plants" because of their ability to withstand extreme dehydration. Especially OEA hygrometrica and OEA hygroscopica have special methods to change their cell walls.
In general, Boea species are similar in growth type to rotary fruit species. They are annual to perennial , i.e. monocarpic hapaxanthe plants or perennial , i.e. pollakanthe, polycarpic plants and grow as evergreen, herbaceous plants . The greater part of the species is acaulescent, which means that the stem axis is compressed.
Foliage leaves
The leaves of most species are arranged in basal rosettes. The mostly finely hairy and easily breaking, slightly fleshy leaves have short stems. The simple leaf blades are mostly almost ovate to inverted heart-shaped and sawed on the edge.
Inflorescences and flowers
The flowers are usually a few to many in zymose inflorescences on lateral, long inflorescence shafts.
The hermaphrodite, zygomorphic flowers are five-fold with a double flower envelope . The five sepals are usually free or at most fused at their base. The five petals are partly free and sometimes grown in pairs. The colors of the petals range from blue to purple to white. There are two pairs of stamens . The nectaries are ring-shaped or briefly cup-shaped. Two carpels are an ovoid to cylindrical, under constant, mostly single-chamber ovary grown. The scar varies depending on the species.
Systematics and distribution
The genus Boea was established in 1785 by Philibert Commerson in Jean-Baptiste de Lamarck : Encyclopédie Méthodique, Botanique , Volume 1, p. 401. The type species is Boea magellanica Lam. Synonyms for Boea Comm. ex Lam. are: Dorcoceras Bunge , Chleterus Raf.
The World Checklist of Gesneriaceae the Smithsonian Institution lists the following OEA typologies:
- Boea Clarkeana Hemsl. (Syn .: Boea densihispidula S.B.Zhou & XHGuo , Boea mairei H.Lév. , Dorcoceras clarkeanum (Hemsl.) Schlechter , Streptocarpus clarkeanus (Hemsl.) Hilliard & BLBurtt ): It comes from the Chinese provinces of Anhui , Hubei , Hunan , Jiangi , Shaanxi , Sichuan , Yunnan and Zhejiang .
- Boea dennisii B.L.Burtt : This endemic occurs only on the Solomon Islands of Guadalcanal .
- Boea esquirolii H.Lév. & Vaniot : It occurs in China.
- Boea geoffrayi Pellegr. : It occurs in Thailand and Cambodia .
- Boea hemsleyana B.L.Burtt (Syn .: Boea lanata Hemsl. Non Ridley ): It occurs in Papua New Guinea and the Solomon Islands (only on the islands of Guadalcanal, Florida).
- Boea hians Burkill : It occurs in Papua New Guinea .
- Boea hygrometrica (Bunge) R.Brown : It occurs in Hong Kong and the Chinese provinces of Anhui, Fujian , Guangdong , Guangxi , Hebei , Henan , Hubei, Hunan, Jiangxi, Liaoning , Shaanxi, Shandong , Shanxi , Sichuan, Yunnan and Zhejiang.
- Boea hygroscopica F. Muell. (Syn .: Boea hygroscopica var. Bellendenkerensis Domin , Boea hygroscopica var. Typica Domin ): This endemic occurs only in the Australian state of Queensland . It occurs on the Cape York Peninsula and in northeastern Queensland to Rockhampton in the south. It thrives at altitudes of 60 to 900 meters along river beds, on mossy rocks in the rainforest, in open forests and gallery forests .
- Boea kinnearii (F.Muell.) BLBurtt : This endemic occurs only in the Australian state of Queensland.
- Boea lawesii H.O. Forbes (Syn .: Boea lanuginosa Lauterb. & K.Schum. , Didymocarpus lawesii F. Muell. ): It occurs in Papua New Guinea.
- Boea magellanica Lam. (Syn .: Beaua tomentosa Pourret ex CBClarke nom. Nud., Boea cardwellii F.Muell. Ex CBClarke nom. Nud., Boea commersonii R.Brown , Boea praliniana A.St.Hil. , Boea warburgii Schlechter ): She comes in Papua New Guinea, on the Bismarck Archipelago (Mussau, New Ireland, New Britain, New Lauenburg, Hastings), on the Solomon Islands and perhaps on Java (as Boea commersonii ).
- Boea mollis Schlechter : It occurs in Papua New Guinea.
- Boea philippensis C.B.Clarke (Syn .: Boea elephantopoides W.Y.Chun , Boea poilanei Pellegr. , Boea pseudoglandulosa Elmer ex Merr. , Dorcoceras philippense (CBClarke) Schlechter ): It occurs in China (Guangdong, Guangxi, Guizhouan, Hainan, Hunan Vietnam , Laos , Sulawesi , the Lesser Sunda Islands and the Philippines ( Luzon , Mondoro , Mindanao ).
- Boea rosselensis B.L.Burtt : It occurs in New Guinea .
- Boea urvillei C.B. Clarke : This endemic occurs only in Irian Jaya .
- Boea wallichii R. Brown : It occurs in northeast India, Myanmar and Thailand .
use
Boea hygroscopica is occasionally used as an ornamental plant.
Habit and leaves of Boea hemsleyana
Flowers of Boea hemsleyana
Seedlings of Boea hemsleyana
Individual evidence
- ↑ a b c d e f g h i j k l m n o p q r LE Skog, JK Boggan, 2007: World Checklist of Gesneriaceae. Washington, DC: Dept. of Botany, Smithsonian Institution.
- ↑ Lotte Burkhardt: Directory of eponymous plant names . Extended Edition. Botanic Garden and Botanical Museum Berlin, Free University Berlin Berlin 2018. [1]
- ↑ G. Jiang et al .: Planta , Volume 225, Issue 6, 2007, pp. 1405-1420.
- ↑ F. Navari-Izzo et al. 2006. Physiologica Plantarum , Unusual composition of thylakoid membranes of the resurrection plant, Boea hygroscopica: Changes in lipids upon dehydration and rehydration , Volume 94, Issue 1, 1995, pp 135-142.
- ^ Boea at Tropicos.org. Missouri Botanical Garden, St. Louis, Retrieved April 15, 2017.
- ↑ Australian Tropical Rainforest Plants fact sheet . ScienceDirect
- ↑ S. Jacson: Tropiclimber Cultivation information .
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