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
Basionym: Amelanchier ovalis var. semiintegrifolia Hooker Fl. Bor.-Amer. 1: 202. 1832
Synonyms: A. florida var. humptulipensis G. N. Jones
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.

Selected References

None.

Lower Taxa

None.
hairy +  and glabrous +
hairy +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
glabrous +  and hairy +
Christopher S. Campbell +, Michael B. Burgess +, Kevin R. Cushman +, Eric T. Doucette +, Alison C. Dibble +  and Christopher T. Frye +
(Hooker) C. L. Hitchcock in C. L. Hitchcock et al. +
fissuring in older trees +  and smooth +
salmon colored +, brown +  and gray +
compound +  and simple +
opposite +  and alternate +
subcordate +  and rounded +
Amelanchier ovalis var. semiintegrifolia +
3.4 cm34 mm <br />0.034 m <br /> (4.9 cm49 mm <br />0.049 m <br />) +
2.6 cm26 mm <br />0.026 m <br /> (3.7 cm37 mm <br />0.037 m <br />) +
2.4 cm24 mm <br />0.024 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
elliptic +  and oval +
? (?) +  and ? (?) +
17mm +  and 26mm +
adnate +  and connate +
Many-flowered shadbush +
B.C. +, Alaska +, Calif. +, Oreg. +  and Wash. +
not +  and aggregated +
0–2100 m +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
purplish +  and nearly black pinkish or maroon-purple dark purple-blue or brownish +
0.6 cm6 mm <br />0.006 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Woods, hillsides, roadsides, mountainsides +
glabrous +  and hairy +
(4-)6-9(-12)-flowered +
2.6 cm26 mm <br />0.026 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
nodding +, spreading +, drooping +, erect +, ascending +  and arching +
1.4 cm14 mm <br />0.014 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
crassinucellate +
deciduous +
pinnate +, dentate +, serrate +  and entire +
toothed +, unlobed +  and lobed +
6-10-loculed +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
2 +  and 1 +
1 cm10 mm <br />0.01 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
1.39 cm13.9 mm <br />0.0139 m <br /> (1.82 cm18.2 mm <br />0.0182 m <br />) +
0 (?) +  and 4 (?) +
0.47 cm4.7 mm <br />0.0047 m <br /> (0.66 cm6.6 mm <br />0.0066 m <br />) +
Pink (?) +, Ivory (?) +  and White (?) +
free +  and distinct +
0.99 cm9.9 mm <br />0.0099 m <br /> (1.39 cm13.9 mm <br />0.0139 m <br />) +
0.33 cm3.3 mm <br />0.0033 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
1.26 cm12.6 mm <br />0.0126 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.68 cm6.8 mm <br />0.0068 m <br /> (1.26 cm12.6 mm <br />0.0126 m <br />) +
Flowering Mar–Jun +  and fruiting Jun–Aug. +
adnate +, free +, connate +  and distinct +
purple +  and black +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
in C. L. Hitchcock et al., Vasc. Pl. Pacif. N.W. +
4-17-flowered +
not arillate +
0.32 cm3.2 mm <br />0.0032 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persistent +
free +  and distinct +
erect +  and recurved +
triangular +  and lanceolate +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
free +  and distinct +
branched +  and simple +
colonial +  and solitary +
erect +  and ascending +
1 +  and 20 +
0.29 cm2.9 mm <br />0.0029 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
persistent +
connate +  and distinct +
basal +, lateral +, subterminal +  and terminal +
elongate +
0.2 cm2 mm <br />0.002 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
A. florida var. humptulipensis +
Amelanchier alnifolia var. semiintegrifolia +
Amelanchier alnifolia +
variety +
0 +  and 3 +
inconspicuous +
tree +  and shrub +