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Dryadoideae

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Dryadoideae
Dryas × suendermannii
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Rosales
Family:
Rosaceae
Genera

Cercocarpus Kunth
Chamaebatia Benth.
Dryas L.
Purshia DC. ex Poir. (including Cowania)

The Dryadoideae tribe of the Rosaceae consists of four genera,[1] all of which share root nodules that host the nitrogen-fixing bacterium Frankia.[2] They are sub-shrubs, shrubs, or small trees with a base chromosome number of 9, whose fruits are either an achene or an aggregate of achenes.[1]

Notes

  1. ^ a b Potter, D., et al. (2007). Phylogeny and classification of Rosaceae. Plant Systematics and Evolution. 266(1–2): 5–43.
  2. ^ Swensen, S.M.; Mullin, B.C. (1997). The impact of molecular systematics on hypotheses for the evolution of root nodule symbioses and implications for expanding symbioses to new host plant genera. Plant and Soil. 194: 185–192.
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