Erythea7: 121. 1899
Phenology: Flowering Mar–Jul; fruiting May–Aug.
Habitat: Basaltic ledges, cliffs, and bluffs along streams, stony soil, streambeds, stream banks, copses, mountainsides, roadsides
Elevation: 600–2300 m
Amelanchier cusickii has distinctively long petals. Leaves that are glabrous upon expanding and glabrous or sparsely hairy ovary apices are also useful for identification. The species flowers before A. alnifolia, which suggests that the two are genetically distinct. G. N. Jones (1946) noted that A. alnifolia and A. cusickii frequently grow together and that there is no evidence of hybridization; the authors have observed hybridization between A. alnifolia var. semiintegrifolia and A. cusickii.
|Author||Christopher S. Campbell +, Michael B. Burgess +, Kevin R. Cushman +, Eric T. Doucette +, Alison C. Dibble + and Christopher T. Frye +|
|Common name||Cusick’s shadbush +|
|Elevation||600–2300 m +|
|Habitat||Basaltic ledges, cliffs, and bluffs along streams, stony soil, streambeds, stream banks, copses, mountainsides, roadsides +|
|Illustrator||Marjorie C. Leggitt +|
|Phenology||Flowering Mar–Jul + and fruiting May–Aug. +|
|Synonym||Amelanchier alnifolia cusickii + and A. basalticola +|
|Taxon name||Amelanchier cusickii +|
|Taxon parent||Amelanchier +|
|Taxon rank||species +|
|Volume||Volume 9 +|