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.
Revision as of 12:48, 30 July 2020 by imported>Volume Importer
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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 +
subtruncate;rounded or acute +
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 +
membranous +  and coriaceous +
1.7 cm17 mm <br />0.017 m <br /> (?) +  and 2.6 cm26 mm <br />0.026 m <br /> (?) +
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 +
funnel +  and campanulate +
(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 +
9.9mm;13.9mm +
oblanceolate;oval +
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 +
hairy;glabrous +
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 +