$modus 0:
$modus 1:
Crataegus neobushii
Crataegus neobushii Sarg. [Accepted]
Rosaceae Rosoideae Crataegeae
2 284923 Crataegus neobushii Sarg.
C.S. Sargent, Trees & Shrubs, vol. 2 : t. 105 (1855) [C.E. Faxon]