Amelanchier utahensis

Koehne

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

Common names: Utah serviceberry or shadbush
Selected by author to be 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.
Click plate for higher resolution version.
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.

References

None.

Lower Taxa

No lower taxa listed.

Facts about "Amelanchier utahensis"
AuthorChristopher S. Campbell +, Michael B. Burgess +, Kevin R. Cushman +, Eric T. Doucette +, Alison C. Dibble + and Christopher T. Frye +
AuthorityKoehne +
Common nameUtah serviceberry or shadbush +
DistributionAriz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Tex. +, Utah +, Wash. +, Wyo. + and Mexico (Baja California). +
Elevation900–3500 m +
HabitatDry rocky slopes, canyons, stream banks, mountainsides, foothills, deserts +
IllustratorMarjorie C. Leggitt +
PhenologyFlowering Apr–May + and fruiting Jul–Sep. +
Publication titleGatt. Pomac., +
Publication year1890 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse grained fna xml/V9/V9 1116.xml +
Special statusSelected by author to be illustrated +
SynonymsAmelanchier covillei +, A. glabra +, A. gracilis +, A. prunifolia +, A. utahensis subsp. covillei + and A. utahensis var. covillei +
Taxon familyRosaceae +
Taxon nameAmelanchier utahensis +
Taxon parentAmelanchier +
Taxon rankspecies +
VolumeVolume 9 +