Begoniaceae
The Begoniaceae are a family of flowering plants with about 1400-1500 species occurring in the subtropics and tropics of both the New World and Old World. All but one of the species are in the genus Begonia. The only other genus in the family, Hillebrandia, is endemic to the Hawaiian Islands and has only one species.
| Begoniaceae | |
|---|---|
| File:Starr 070321-5953 Begonia hirtella.jpg | |
| Begonia hirtella | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Order: | Cucurbitales |
| Family: | Begoniaceae C.Agardh[1] |
| Genera | |
| File:Begoniaceae Distribution Map.svg | |
| Range of the family Begoniaceae | |
Many varieties (or cultivars) of some species and hybrids of the genus Begonia are used as ornamental plants.
Description
Plant and leaves
Most of the plants in this family are perennial herbaceous plants and very few are shrubs o subshrubs; they are from only a few centimetres to 3 metres tall. Their leaves and stems are succulents,[2] that is, leaves and stems are juicy and store water.
Stems are upright (vertical) and many species form rhizomes or tubers (fleshy, thickened underground stems). In some cases, the stems are very short and the leaves are in a group close to the soil.[2]
The leaves of most species are simple, undivided and with sides more or less unequal; in very few cases they are compound (divided). They are alternate or, when the stem is very short, they are all in a group.[2]
Flowers and fruits
Begoniaceae plants are mostly monoecious, so there are male and female flowers on the same plant; very few are dioecious, with only one kind of flower so the plants are either male or female. Flowers are grouped in inflorescences.[2]
The fruits are capsules (simple, dry fruits) and sometimes berries; they have many very small seeds.[2][3]
Chromosome number
The chromosome number is variable, n=10-21 or more.[4]
Genera
The family Begoniaceae was named in 1820 as Begoniae by the Bohemian scientists Friedrich Graf von Berchtold and Jan Svatopluk Presl in Prirozenosti Rostlin, 1:270, and then in 1824 as Begoniaceae by the Swedish botanist Carl Adolph Agardh, published in Aphorismi Botanici.[5]
There are two genera in this family:
- Begonia, with approximately 1400 species that are widely distributed in the tropics.[6]
- Hillebrandia, with one species that is endemic to the Hawaiian Islands and the only member of the Begoniaceae native to those islands.[7]
The New Guinean genus Symbegonia Warb. has recently been reduced to a section of Begonia.[6]
Where they grow
The species of this family are found abundantly in all moist tropical countries, absent only from the Australian tropical forests.[8]
One species, B. grandis grows in the temperate zone, growing as far north as near Beijing (China).[6]
Uses
Some species, hybrids and cultivars of the genus Begonia are used worldwide as ornamental plants in parks, gardens, balconies and as houseplants because they have beautiful leaves and flowers.[4]
Begoniaceae Media
- 秋海棠 - 溪頭自然教育園區 Begonia - Xitou Nature Education Area, Taiwan 20220413200914 01.jpg
Begonia leaves are very varied in shape and varigation.
- 秋海棠 - 溪頭自然教育園區 Begonia - Xitou Nature Education Area, Taiwan 20220413200002 15.jpg
The plants of many species of Begonia are covered with fine hairs.
- 秋海棠 - 溪頭自然教育園區 Begonia - Xitou Nature Education Area, Taiwan 20220413202630.jpg
The back of the leaves is one of the key points to appreciate Begonia.
- 秋海棠 Begonia - Botanical Garden of National Museum of Natural Science, Taiwan 20220422160737 04.jpg
The back of the leaves is one of the key points to appreciate Begonia.
References
- ↑ Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ 2.0 2.1 2.2 2.3 2.4 Cuizhi Gu, Ching-I Peng & Nicholas J. Turland. "Begoniaceae in Flora of China". Retrieved 30 May 2013.
- ↑ Hyde, M.A., Wursten, B.T. & Ballings, P. "Begoniaceae - Begonia family". Flora of Zimbabwe. Retrieved 4 June 2013.
{{cite web}}: CS1 maint: multiple names: authors list (link) - ↑ 4.0 4.1 L. Watson and M.J. Dallwitz. "Begoniaceae C.A. Agardh". The familes of flowering plants. Archived from the original on 11 March 2013. Retrieved 3 June 2013.
- ↑ Agardh, C. A. "Aphorismi Botanici" (in Latina). p. 200. Retrieved 3 June 2013.
- ↑ 6.0 6.1 6.2 Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ Lua error in Module:Citation/CS1/Identifiers at line 630: attempt to index field 'known_free_doi_registrants_t' (a nil value).
- ↑ Shahina Ghazanfar and Parveen Aziz. "Begoniaceae C. Agardh in Flora of Pakistan". Retrieved 3 June 2013.
Other websites
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Wikimedia Commons has media related to Lua error in Module:Commons_link at line 62: attempt to index field 'wikibase' (a nil value).. |
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Wikispecies has information on: Begoniaceae. |
- American Begonia Society
- Begonia - Gardenology.org Archived 2023-01-06 at the Wayback Machine
- A Phylogeny of Begonia Using Nuclear Ribosomal Sequence Data and Morphological Characters
- A recircumscription of Begonia based on nuclear ribosomal sequences Archived 2019-10-17 at the Wayback Machine
- Notes on the geography of South-East Asian Begonia and species diversity in montane forests Archived 2012-03-13 at the Wayback Machine
- Phylogenetic position and biogeography of Hillebrandia sandwicensis (Begoniaceae): a rare Hawaiian relict Archived 2010-07-31 at the Wayback Machine
- Phylogenetic Relationships of the Afro-Malagasy Members of the Large Genus Begonia Inferred from trnL Intron Sequences