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Hansen & Rahn | Family List

Hydrangeaceae Dumortier

habit
woody plants, herbaceous plants

hairs
stellate, 2-armed or T-shaped, non-glandular, tufted, non-glandular

distribution
Asian, North American, South American

leaf: position
opposite or verticillate, alternate

leaf: nature
not compound

leaf: venation
pinnate or hardly visible in leaves or leaflets., palmate in leaves or leaflets

margin
lobed or divided, dentate

leaf: glands/ligule
with pellucid or glandular dots or lines

leaf: stipules
absent

inflorescence
simple, sympodial

flower: sexuality
bisexual

flower: symmetry
actinomorphic

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

flower: disc
absent

flower: perianth number
7+

flower: perianth nature
perianth of calyx and corolla

flower: sepal number
5

flower: sepal position
connate

flower: sepal nature
sepals imbricate or contorted

flower: petal number
4, 5, 7, 8, 9, 10

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

flower: petal nature
petals contorted, petals valvate

stamen: number
8, 9, 10, 11+

stamen: anthers
dorsifixed or ventrifixed, basifixed, introrse, extrorse, opening by longitudinal slits

stamen: filaments
free from the corolla, inserted on the corolla, not connate, connate into separate bundles

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

pistil: carpel
3, 4, 5, 6+

pistil: ovary
1-locular, 3-locular, 4-locular, 5-locular, 6+ locules

pistil: ovule
3+ in each loculus

pistil
carpels free from each other or carpel 1, 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 with endosperm


 

Related Objects  

Interactive Keys by Xiangying Wen  
  • Hydrangea anomala (Xiangying Wen)
  • Image/JPEG
  • Hydrangea paniculata (Xiangying Wen)
  • Image/JPEG
  • Hydrangea paniculata (Xiangying Wen)
  • Image/JPEG
  • Hydrangea quercifolia (Xiangying Wen)
  • Image/JPEG
  • Hydrangea serrata (Xiangying Wen)
  • Image/JPEG

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