Dryadoideae
| Dryadoideae | |
|---|---|
 | |
| Dryas × suendermannii | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Rosales |
| Family: | Rosaceae |
| Subfamily: | Dryadoideae (Lam. & DC.) Sweet |
| Genera | |
| |
The Dryadoideae subfamily of the Rosaceae consists of four genera,[1] all of which share root nodules that host the nitrogen-fixing bacterium Frankia.[2] They are subshrubs, shrubs, or small trees with a base chromosome number of 9, whose fruits are either an achene or an aggregate of achenes.[1]
Taxonomic history
The subfamily has at various times been separated as its own family (Dryadaceae), or as a tribe (Dryadeae) or subtribe (Dryadinae).[3]
References
- 1 2 Potter, D., et al. (2007). Phylogeny and classification of Rosaceae. Plant Systematics and Evolution. 266(1–2): 5–43.
- ↑ 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.
- ↑ J. L. Reveal. "Indices Nominum Supragenericorum Plantarum Vascularium – RA-RZ".
External links
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Media related to Dryadoideae at Wikimedia Commons -
Data related to Dryadoideae at Wikispecies
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