All Floras      Search Specimen
Login | eFloras Home | Help
IBSC | Family List | Angiospermae | Valerianaceae

Valeriana Linn.

缬草属

Description from Flora of China

Herbs, perennial. Plants hermaphroditic, gynodioecious, polygamo-dioecious, or dioecious, glabrous or variously pubescent, villous or hirsute, hairs 1- to several celled, white or translucent. Rhizomes elongate, with fibrous roots, or rhizomes reduced, with fascicled, often clavate, roots. Taproots absent (Chinese spp.). Stolons present or absent. Basal leaves rosulate, petiolate or spatulate, undivided, pinnate or pinnatifid, persistent or caducous. Cauline leaves opposite, petiolate to sessile; petiole length typically diminishing upward along stem; blade pinnate, pinnatifid, pinnatisect, or undivided. Inflorescence paniculiform or corymbiform, at anthesis: flowers in remote terminal clusters or in a densely capitate head, branches elongating in fruit; lowermost bracts often lobed, bracts otherwise simple and entire; bracteoles simple, similar to bracts; flowers bisexual, male (not in China?) or female. Calyx a ring at anthesis, unfurling into 5-15 white, plumose segments, 4-8 mm, in mature fruit. Corolla funnelform, rotate or salverform; tube usually gibbous near base; limb 5-lobed. Stamens 3 (4 in Valeriana kawakamii), inserted on corolla tube. Achene compressed dorsally, 3-veined on abaxial side, 1-veined on adaxial side, sterile locules reduced; crowned by persistent, plumose calyx, segments 2-7 mm.

A difficulty in the key is the rhizomes as unfortunately many collections do not have the rhizomes attached.

About 300 species: Asia, Europe, North and South America; 21 species (13 endemic) in China.

Lower Taxa


 

Related Objects  

Flora of Chile  
  • PDF
  • PDF
  • Name Problem
  • PDF
    Flora of China  
  • Valeriana (PDF)
  • PDF
    Trees and shrubs of the Andes of Ecuador  
  • Valeriana microphylla
  • Image/JPEG

    IBSC @ efloras.org
    Browse by
    Family
    Genera
    Search by name

    Specimen Search

    People @ IBSC

     

     

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