Amelanchier alnifolia var. semiintegrifolia

(Hooker) C. L. Hitchcock in C. L. Hitchcock et al.

in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. 3: 94. 1961

Common names: Many-flowered shadbush
Endemic
Synonyms: A. florida var. humptulipensis G. N. Jones
Basionyms: Amelanchier ovalis var. semiintegrifolia Hooker
Treatment appears in FNA Volume 9. Treatment on page 652. Mentioned on page 651, 654.
Shrubs or trees, 1–12 m. Stems 1–20, solitary or in colonies. Leaves: petiole (3–)6.8–12.6(–20) mm; blade elliptic to oval to orbiculate, (16–)24–34(–49) × (7–)17–26(–37) mm, base rounded or subcordate, apex subtruncate to rounded or acute, abaxial surface sparsely to moderately hairy, adaxial glabrous or sparsely (moderately) hairy. Inflorescences (4–)6–9(–12)-flowered, (8–)14–26(–35) mm. Pedicels: proximalmost (2–)3–8(–13) mm. Flowers: sepals (1.4–)2.2–3.2(–4) mm; petals oblanceolate to oval, (7.6–)9.9–13.9(–18.2) × (2.6–)3.3–4.7(–6.6) mm; ovary apex moderately to densely hairy (or glabrous). Pomes 10–13 mm diam. 2n = 4x.

Phenology: Flowering Mar–Jun; fruiting Jun–Aug.
Habitat: Woods, hillsides, roadsides, mountainsides
Elevation: 0–2100 m

Distribution

V9 1119-distribution-map.jpg

B.C., Alaska, Calif., Oreg., Wash.

Discussion

Variety semiintegrifolia is most similar to and intergrades with var. alnifolia; inflorescences and lowest pedicel lengths distinguish the two.

References

None.

Lower Taxa

No lower taxa listed.

AuthorChristopher S. Campbell +, Michael B. Burgess +, Kevin R. Cushman +, Eric T. Doucette +, Alison C. Dibble + and Christopher T. Frye +
Authority(Hooker) C. L. Hitchcock in C. L. Hitchcock et al. +
BasionymsAmelanchier ovalis var. semiintegrifolia +
Common nameMany-flowered shadbush +
DistributionB.C. +, Alaska +, Calif. +, Oreg. + and Wash. +
Elevation0–2100 m +
HabitatWoods, hillsides, roadsides, mountainsides +
IllustratorMarjorie C. Leggitt +
PhenologyFlowering Mar–Jun + and fruiting Jun–Aug. +
Publication titlein C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. +
Publication year1961 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse grained fna xml/V9/V9 1119.xml +
Special statusEndemic +
SynonymsA. florida var. humptulipensis +
Taxon familyRosaceae +
Taxon nameAmelanchier alnifolia var. semiintegrifolia +
Taxon parentAmelanchier alnifolia +
Taxon rankvariety +
VolumeVolume 9 +