All Floras      Advanced Search
Pakistan V. 139 Page 1 Login | eFloras Home | Help
Pakistan | Family List | Pakistan V. 139

Onagraceae A. L. Jussieu

Peter C. Hoch and Peter H. Raven

Perennial or annual herbs (in Pakistan), shrubs or rarely trees. Leaves simple, opposite or spirally arranged, entire or toothed; stipules present or absent. Flowers actinomorphic or zygomorphic, hermaphrodite (in Pakistan), solitary or in axils of leaves or in racemes, 2-7-merous. Floral tube present or absent. Sepals 2-7, valvate. Petals 0-7, free. Stamens as many as or twice as many as the sepals. Anthers versatile or basifixed; pollen shed singly or in tetrads, almost always united by viscin threads. Ovary inferior, 1-5-locular; style single; stigma lobed, clavate or globose. Fruit a capsule, berry or nut, loculicidal or indehiscent. Seeds anatropous, lacking endosperm, smooth or variously papillose, with a coma or wings or lacking both.

A family of 17 genera and about 650 species, worldwide but best represented in western North America. Represented in Pakistan by four genera, of which only Oenothera is not native.

[Treatment of Circaea by David E. Boufford, Section of Botany, Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA.; of Oenothera by Warren L. Wagner, Washington University and Missouri Botanical Garden, St. Louis, Missouri, USA.; of Epilobium and Ludwigia by Peter Hoch].


1 Sepals 2; fruit bristly with hooked hairs, 1-2-seeded.   1 Circaea
+ Sepals 4-5; fruit not bristly with hooked hairs, many-seeded.   (2)
       
2 (1) Sepals persistent after anthesis; petals yellow; floral tube absent.   3 Ludwigia
+ Sepals deciduous after anthesis; petals pink, white or yellow; floral tube present, or if absent then petals pink.   (3)
       
3 (2) Seeds with a chalazal coma; capsules 1-2.5 mm thick, not conspicuously ribbed; floral tube 0-3 mm long.   2 Epilobium
+ Seeds without chalazal coma; capsules 3-15 mm thick, conspicuously ribbed; floral tube 4-130 mm long.   4 Oenothera

Lower Taxa


 

Related Objects  

A Catalogue of the Vascular Plants of Madagascar  
  • Living Plant image: RAKOTOVAO 2616 (Charles Rakotovao)
  • Image/JPEG
    A Checklist for the South China Botanical Garden, Guangzhou, Guangdong Province, P. R. China  
  • Epilobium canum (Xiangying Wen)
  • Image/JPEG
    Chinese Plant Names  
  • Circaea alpina subsp. imaicola (Digital Flora of Taiwan)
  • Image/JPEG
  • Circaea alpina subsp. imaicola (Digital Flora of Taiwan)
  • Image/JPEG
  • Circaea cordata (Digital Flora of Taiwan)
  • Image/JPEG
  • Ludwigia decurrens (Taiwan Invasive Species Database)
  • Image/JPEG
  • Fuchsia (Trees and shrubs of the Andes of Ecuador)
  • Image/JPEG
    Flora of Chile  
  • Family PDF
  • PDF
    Flora of China  
  • Onagraceae.pdf
  • PDF
    Interactive Keys by Xiangying Wen  
  • Circaea alpina subsp. imaicola (Digital Flora of Taiwan)
  • Image/JPEG
  • Circaea alpina subsp. imaicola (Digital Flora of Taiwan)
  • Image/JPEG
  • Circaea cordata (Digital Flora of Taiwan)
  • Image/JPEG
  • Ludwigia decurrens (Taiwan Invasive Species Database)
  • Image/JPEG
  • Epilobium canum (Xiangying Wen)
  • Image/JPEG
  • Fuchsia (Trees and shrubs of the Andes of Ecuador)
  • Image/JPEG
  • Fuchsia sp. (Xiangying Wen)
  • Image/JPEG

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