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Dryas drummondii6.jpg
Dryas × suendermannii
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Rosales
Family: Rosaceae
Subfamily: Dryadoideae
(Lam. & DC.) Sweet

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

The Dryadoideae subfamily of the Rosaceae consists of four genera.[1] These genera are unusual in the family Rosaceae because they all have the nitrogen-fixing bacteria called Frankia in their roots.[2] Dryadoideae plants are subshrubs, shrubs, or small trees. Their fruits are either an achene or an aggregate of achenes.[1]

Notes[change | change source]

  1. 1.0 1.1 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.