All Floras      Advanced Search
FNA Vol. 6 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 6

3. Begoniaceae C. Agardh

Begonia Family Begonia Family

Luc Brouillet

Herbs, annual or perennial [canelike shrubs, rarely treelets, rarely climbing, sometimes epiphytic], evergreen [some tuberous species seasonally absent, notably Hillebrandia], ± succulent, usually hairy or scaly, sometimes glabrous. Leaves alternate in 2 ranks connate]; staminate flowers: tepals 2–4[–6, rarely more; 5 sepals and 5 petals in Hillebrandia], stamens [3–]6–33[–100+], distinct [filaments basally connate], [sometimes collectively bilaterally symmetric]; pistillate flowers: tepals [2–]4–5[+] [5 sepals, 5 petals in Hillebrandia], ovary inferior [semi-inferior in Hillebrandia], [2–]3[–9]-carpellate, [1–]3[–6]-winged [horned, ribbed, or angled, rarely not winged], wings unequal, [2–]3[–6]-locular [5-locular basally and ± 1-locular distally in Hillebrandia], placentation axile [axile and parietal in Hillebrandia] (placentae often 2-lobed), styles [2–]3[–9; 5 in Hillebrandia], distinct [rarely basally connate], stigmatic branches [4–]6[–12+], usually twisted [straight], ovules 15–50 per locule, anatropous, bitegmic, crassinucellate. Fruits capsular [baccate], winged [horned, ridged, or angled, rarely not winged, notably in Hillebrandia], papery [rarely fleshy], dehiscence loculicidal [indehiscent]. Seeds 25–100+, operculate (lid surrounded by collar cells), embryo straight, endosperm insubstantial or absent.

Genera 2, species ca. 1400 (1 genus, 2 species in the flora): introduced; Mexico, West Indies, Central America, South America, s Asia, Africa, Indian Ocean Islands, Pacific Islands (Hawaii).

Molecular phylogenetic and morphologic data show that Begoniaceae comprise two genera: the monotypic, Hawaiian endemic Hillebrandia Oliver (H. sandwicensis Oliver), and pantropical Begonia (W. L. Clement et al. 2004; L. L. Forrest et al. 2005). Although present in New Guinea, the family is natively absent from Australia. The Hawaiian Archipelago is the only group of Pacific Islands where the family is native. The relationships of Begoniaceae are with the Cucurbitales, sister to Datiscaceae in the narrow sense (Angiosperm Phylogeny Group 2009).

Lower Taxon


 

Related Objects  

A Checklist for the South China Botanical Garden, Guangzhou, Guangdong Province, P. R. China  
  • Begoniaceae sp. (Xiangying Wen)
  • Image/JPEG
    Chinese Plant Names  
  • Begonia austrotaiwanensis (Digital Flora of Taiwan)
  • Image/JPEG
  • Begonia austrotaiwanensis (Digital Flora of Taiwan)
  • Image/JPEG
  • Begonia longifolia (Digital Flora of Taiwan)
  • Image/JPEG
    Flora of China  
  • Begoniaceae.pdf
  • PDF
    Interactive Keys by Xiangying Wen  
  • Begonia austrotaiwanensis (Digital Flora of Taiwan)
  • Image/JPEG
  • Begonia austrotaiwanensis (Digital Flora of Taiwan)
  • Image/JPEG
  • Begonia longifolia (Digital Flora of Taiwan)
  • Image/JPEG
  • Begoniaceae sp. (Xiangying Wen)
  • Image/JPEG
  • Begoniaceae sp. (Xiangying Wen)
  • Image/JPEG
  • Begoniaceae sp. (Xiangying Wen)
  • Image/JPEG
  • Begoniaceae sp. (Xiangying Wen)
  • Image/JPEG
  • Begoniaceae sp. (Xiangying Wen)
  • Image/JPEG

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |