Nomenclature: wfo-0001399576
![Asa Gray (1810-1888) Asa Gray (1810-1888)](http://commons.wikimedia.org/wiki/Special:FilePath/Asa%20Gray%20by%20John%20Whipple%2C%201864.jpg)
Crataegus tomentosa var. pyrifolia Manual , ed. 2: 124 (1856)
Nomenclatural References
- literature : Manual (Gray), ed. 2. 124. 1856 BHL link from IPNI metadata.
- person : Asa Gray (1810-1888) Based on occurrence of standard abbreviation 'A.Gray' in the authors string.
- database : IPNI record: 69098-2
Taxonomy: Accepted in 2021-12 classification
Occurs in: 2021-12 : 2022-06 : 2022-12 : 2023-06 : 2023-12 : 2024-06Placement: Angiosperms > Rosales > Rosaceae > Crataegus > Crataegus tomentosa > Crataegus tomentosa var. pyrifolia