All Floras      Advanced Search
Login | eFloras Home | Help
Hansen & Rahn | Family List

Orchidaceae A. L. Jussieu

Orchidaceae
Dendrobium

Credit: Hong Song

habit
herbaceous plants

important diagnostics
chlorophyll absent

hairs
glandular, stellate, branched

distribution
African, Asian, Australian and Oceanian, European, North American, South American

leaf: position
opposite or verticillate, alternate, distichous, ensiform

leaf: nature
not compound

leaf: venation
pinnate or hardly visible in leaves or leaflets., invisible or leaves 1-nerved, longitudinal in leaves or leaflets, palmate in leaves or leaflets

margin
with entire margin

leaf: stipules
absent

inflorescence
solitary, raceme, spike, umbel, head, compound, sympodial or monopodial

flower: sexuality
bisexual, unisexual

flower: symmetry
zygomorphic or irregular

flower: receptacle
enlarged, completely united with the ovary, totally or partially covering it

flower: disc
absent

flower: perianth number
6

flower: perianth nature
perianth of similar segments, perianth of calyx and corolla

flower: sepal number
0, 3, 6+

flower: sepal position
all free from one another, connate

flower: sepal nature
sepals imbricate or contorted, sepals valvate

flower: petal number
0, 3, 6

flower: petal position
all free from one another, petals connate, petals imbricate

flower: petal nature
petals valvate

stamen: number
1, 2

stamen: anthers
basifixed, introrse, opening by longitudinal slits

stamen: filaments
free from the corolla

stamen: other characters
pollen coherent into pollinia or wax-like masses

pistil: style
style 1, or styles more or less connate

pistil: carpel
3

pistil: ovary
1-locular, 3-locular

pistil: ovule
3+ in each loculus

pistil
ovules parietal, carpels connate, ovules axile, carpels connate, ovules attached to the central axis or ventrally in apocarpae

fruit: type
a capsule

fruit: seed
3+ seeds

seed: embryo
straight

seed: endosperm
seeds without endosperm


 

Related Objects Image Gallery 
  • Cymbidium (Hong Song)
  • Image/JPEG
  • Dendrobium (Hong Song)
  • Image/JPEG
  • Orchidaceae (Hong Song)
  • Image/JPEG

    Flora of China  
  • Orchidaceae: Family PDF
  • PDF
    Interactive Keys by Xiangying Wen  
  • Cymbidium (Hong Song)
  • Image/JPEG
  • Cymbidium (Hong Song)
  • Image/JPEG
  • Dendrobium (Hong Song)
  • Image/JPEG
  • Cypripedium sp. (Hong Song)
  • Image/JPEG
  • Cypripedium sp. (Hong Song)
  • Image/JPEG
  • Orchidaceae sp. (Hong Song)
  • Image/JPEG
  • Orchidaceae sp. (Hong Song)
  • Image/JPEG
  • Orchidaceae sp. (Hong Song)
  • Image/JPEG
  • Orchidaceae sp. (Hong Song)
  • Image/JPEG
  • Orchidaceae sp. (Hong Song)
  • Image/JPEG
  • Orchidaceae sp. (Hong Song)
  • Image/JPEG
  • Orchidaceae sp. (Hong Song)
  • Image/JPEG

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