Amelanchier utahensis
Amelanchier gaspensis
pale leaf serviceberry, pale serviceberry, Utah service-berry, Utah serviceberry or shadbush
amélanchier de gaspésie, Gaspé serviceberry, Gaspé shadbush
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.
mostly unfolded;
petiole (8–)12.8–20.7(–25) mm;
blade broadly oblong to suborbiculate, (32–)41–57(–63) × (26–)30–40(–45) mm, base cordate or rounded, each margin with (0–)3–9(–12) teeth on proximal 1/2 and 3–5 teeth in distalmost cm, largest teeth more than 1 mm, apex rounded to subtruncate or short-pointed, abaxial surface moderately (sparsely or densely) hairy by flowering, surfaces sparsely hairy (or glabrous) later.
(4–)6–10(–13)-flowered, (8–)16–30(–43) mm.
(3–)5–10(–12)-flowered, (20–)35–50(–55) mm.
(0 or)1 or 2(or 3) subtended by a leaf, proximalmost (2–)7–16(–25) mm.
1 or 2 subtended by a leaf, proximalmost (9–)12–19(–26) mm.
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).
sepals recurved after flowering, (2.6–)3–4.5(–5.9) mm;
petals oblanceolate, (8–)9.7–13.5(–15) × (3–)4.1–6.2(–7) mm;
stamens (17–)18–20(–21);
styles (4 or)5, (2.3–)2.6–3.5(–4.1) mm;
ovary apex densely hairy.
purplish black, 6–10 mm diam. 2n = 4x.
blackish purple, 10 mm diam. 2n = 4x.
Amelanchier utahensis
Amelanchier gaspensis
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
K. M. Wiegand (1912) considered Amelanchier gaspensis to be perplexing because it varies much in stature and habit, as well as in leaf outline and dentition. The leaves suggest an intermediate condition between A. sanguinea and A. humilis, especially in the venation.
G. N. Jones (1946) considered the range of Amelanchier gaspensis to extend off the Gaspé Peninsula in Quebec and into Ontario and Michigan; he listed 13 specimens away from the Gaspé, and uncertainty exists about the identity of some of these specimens. For some specimens, Jones first annotated them as A. spicata and later changed his annotation to A. gaspensis. Wiegand annotated one of the specimens as “A. humilis x?,” another specimen as “A. humilis,” and another as “A. florida” (A. alnifolia var. semiintegrifolia). E. G. Voss (1972–1996, vol. 2) included A. gaspensis in A. sanguinea. M. L. Fernald (1950) reported A. gaspensis from northern Maine; specimens from there assigned to A. gaspensis do not match it in all respects. The occurrence of A. gaspensis away from the Gaspé remains questionable.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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