Amelanchier utahensis

Koehne

Gatt. Pomac., 25, plate 2, fig. 20e. 1890.

Common names: Utah serviceberry or shadbush
Illustrated
Synonyms: Amelanchier covillei Standley A. glabra Greene A. gracilis A. Heller A. prunifolia Greene A. utahensis subsp. covillei (Standley) Clokey A. utahensis var. covillei (Standley) N. H. Holmgren
Treatment appears in FNA Volume 9. Treatment on page 650. Mentioned on page 649, 651.

Shrubs, 0.5–5 m. Stems 1–100, often colonial, much branched. Leaves mostly or fully unfolded; petiole (3–) 6–13 (–22) mm; blade suborbiculate to oval or obovate, (14–) 21–36 (–63) × (9–) 16–32 (–54) mm, base usually rounded to subcordate, sometimes cuneate, each margin with 0–3 (–6) teeth on proximal 1/2 and (0–) 3–5 (–7) teeth in distalmost cm, largest teeth more than 1 mm, apex usually rounded to truncate or emarginate, sometimes acute and mucronate, abaxial surface moderately (sparsely or densely) hairy by flowering, sparsely to moderately hairy later, adaxial glabrous or sparsely (moderately) hairy later. Inflorescences (4–) 6–10 (–13) -flowered, (8–) 16–30 (–43) mm. Pedicels: (0 or) 1 or 2 (or 3) subtended by a leaf, proximalmost (2–) 7–16 (–25) mm. Flowers: sepals usually recurved after flowering, (1.6–) 2.6–4.2 (–6.5) mm; petals oblanceolate to oblong, (4.9–) 7.2–9.8 (–14) × (1.6–) 2.6–3.1 (–5.3) mm; stamens (9–) 13–19 (–20); styles (2 or) 3 or 4, (1.7–) 2.3–3 (–3.9) mm; ovary apex moderately to densely hairy (or glabrous). Pomes purplish black, 6–10 mm diam. 2n = 4x.


Phenology: Flowering Apr–May; fruiting Jul–Sep.
Habitat: Dry rocky slopes, canyons, stream banks, mountainsides, foothills, deserts
Elevation: 900–3500 m

Distribution

V9 1116-distribution-map.jpg

Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Tex., Utah, Wash., Wyo., Mexico (Baja California)

Discussion

The sparsely to moderately hairy mature leaves and twigs, rounded to truncate or emarginate leaf apices, relatively short petals, and reduced numbers of stamens and styles are distinctive characteristics for the wide-ranging and common Amelanchier utahensis. Within 25 years of its publication, about a dozen names were published that G. N. Jones (1946) considered synonyms of A. utahensis. Some recent floras have recognized some of these synonymized taxa, including A. bakeri Greene, A. covillei, A. mormonica C. K. Schneider, A. oreophila A. Nelson, and A. venulosa Greene.

Selected References

None.

Lower Taxa

None.
... more about "Amelanchier utahensis"
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 +
Koehne +
fissuring in older trees +  and smooth +
salmon colored +, brown +  and gray +
compound +  and simple +
opposite +  and alternate +
cuneate +, usually rounded +  and subcordate +
3.6 cm36 mm <br />0.036 m <br /> (6.3 cm63 mm <br />0.063 m <br />) +
3.2 cm32 mm <br />0.032 m <br /> (5.4 cm54 mm <br />0.054 m <br />) +
2.1 cm21 mm <br />0.021 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
suborbiculate +  and oval or obovate +
? (?) +  and ? (?) +
16mm +  and 32mm +
adnate +  and connate +
Utah serviceberry or shadbush +
Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Tex. +, Utah +, Wash. +, Wyo. +  and Mexico (Baja California) +
not +  and aggregated +
900–3500 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 />) +
Dry rocky slopes, canyons, stream banks, mountainsides, foothills, deserts +
glabrous +  and hairy +
(4-)6-10(-13)-flowered +
3 cm30 mm <br />0.03 m <br /> (4.3 cm43 mm <br />0.043 m <br />) +
nodding +, spreading +, drooping +, erect +, ascending +  and arching +
1.6 cm16 mm <br />0.016 m <br /> (3 cm30 mm <br />0.03 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 />) +
0.98 cm9.8 mm <br />0.0098 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0 (?) +  and 4 (?) +
0.31 cm3.1 mm <br />0.0031 m <br /> (0.53 cm5.3 mm <br />0.0053 m <br />) +
Pink (?) +, Ivory (?) +  and White (?) +
free +  and distinct +
0.72 cm7.2 mm <br />0.0072 m <br /> (0.98 cm9.8 mm <br />0.0098 m <br />) +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.31 cm3.1 mm <br />0.0031 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering Apr–May +  and fruiting Jul–Sep. +
adnate +, free +, connate +  and distinct +
purplish black +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
1.6 cm16 mm <br />0.016 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Gatt. Pomac., +
4-17-flowered +
not arillate +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
persistent +
free +  and distinct +
triangular +  and lanceolate +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
Illustrated +
free +  and distinct +
erect +  and ascending +
1 +  and 100 +
0.3 cm3 mm <br />0.003 m <br /> (0.39 cm3.9 mm <br />0.0039 m <br />) +
persistent +
connate +  and distinct +
basal +, lateral +, subterminal +  and terminal +
elongate +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Amelanchier covillei +, A. glabra +, A. gracilis +, A. prunifolia +, A. utahensis subsp. covillei +  and A. utahensis var. covillei +
Amelanchier utahensis +
Amelanchier +
species +
0 +  and 3 +
inconspicuous +