Prunus virginiana var. demissa

(Nuttall) Torrey in C. Wilkes et al.

in C. Wilkes et al., U.S. Expl. Exped. 17: 284. 1874.

Common names: Western chokecherry
Basionym: Cerasus demissa Nuttall in J. Torrey and A. Gray, Fl. N. Amer. 1: 411. 1840
Synonyms: C. demissa var. melanocarpa A. Nelson Prunus demissa (A. Nelson) Rydberg P. demissa var. melanocarpa (A. Nelson) A. Nelson P. melanocarpa P. virginiana subsp. demissa (Nuttall) Roy L. Taylor & MacBryde P. virginiana subsp. melanocarpa (A. Nelson) Roy L. Taylor & MacBryde P. virginiana var. melanocarpa (A. Nelson) Sargent
Treatment appears in FNA Volume 9. Treatment on page 366. Mentioned on page 365.

Leaves: blade elliptic to oblanceolate, lengths of larger at least 2 times widths. Inflorescences: racemes (30–) 60–110 (–130) mm. Flowers: hypanthium 2–3 mm; sepals 0.7–1.4 mm; petals 4–5 (–7) mm. 2n = 16.


Phenology: Flowering Apr–Jun; fruiting Jul–Sep.
Habitat: Canyons, gullies, mountain slopes, stream banks and terraces, chaparral, pine-oak forests, thickets, grassy rocky slopes, bluffs, forest edges, roadsides
Elevation: 30–3000 m

Distribution

V9 595-distribution-map.jpg

Alta., B.C., Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Tex., Utah, Wash., Wyo., Mexico (Chihuahua), Mexico (Sonora)

Discussion

Selected References

None.

Lower Taxa

None.

"thin" is not a number."dm" is not declared as a valid unit of measurement for this property.

hairy +  and glabrous +
obtuse;acute;obtuse;acute;acuminate +
Joseph R. Rohrer +
(Nuttall) Torrey in C. Wilkes et al. +
dark gray +, gray-brown +, reddish-brown +  and reddish +
compound +  and simple +
opposite +  and alternate +
cuneate +  and rounded or subcordate +
Cerasus demissa +
elliptic +  and oblanceolate +
0.5 cm5 mm <br />0.005 m <br /> (18 cm180 mm <br />0.18 m <br />) +
membranous +  and leathery +
free +  and distinct +
11 cm110 mm <br />0.11 m <br /> (13 cm130 mm <br />0.13 m <br />) +
4 cm40 mm <br />0.04 m <br /> (11 cm110 mm <br />0.11 m <br />) +
Western chokecherry +
solitary +, fascicles +, 2-flowered +  and umbellate +
Alta. +, B.C. +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Tex. +, Utah +, Wash. +, Wyo. +, Mexico (Chihuahua) +  and Mexico (Sonora) +
not +  and aggregated +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
black +, dark purple +  and red +
globose +
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
30–3000 m +
flattened +
hairy +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (4 cm40 mm <br />0.04 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
not +  and aggregated +
Canyons, gullies, mountain slopes, stream banks and terraces, chaparral, pine-oak forests, thickets, grassy rocky slopes, bluffs, forest edges, roadsides +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
crassinucellate +
deciduous +
serrulate +  and serrate +
glandular-toothed +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and apical +
0.8 cm8 mm <br />0.008 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
hairy +  and glabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0 (?) +  and 4 (?) +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
free +  and distinct +
obovate;suborbiculate +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (2.7 cm27 mm <br />0.027 m <br />) +
hairy +  and glabrous +
0.4 cm4 mm <br />0.004 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
Flowering Apr–Jun +  and fruiting Jul–Sep. +
adnate +, free +, connate +  and distinct +
in C. Wilkes et al., U.S. Expl. Exped. +
11 cm110 mm <br />0.11 m <br /> (13 cm130 mm <br />0.13 m <br />) +
6 cm60 mm <br />0.06 m <br /> (11 cm110 mm <br />0.11 m <br />) +
not arillate +
free +  and distinct +
erect-spreading +  and reflexed +
obovate +, lanceolate +, ovate-elliptic +, oblong +, ovate +, semicircular +  and triangular +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
free +  and distinct +
branched +  and simple +
1 +  and 20 +
linear;lanceolate +
not flattened +, subglobose +  and ellipsoid +
deciduous +
distinct +
basal +, lateral +, subterminal +  and terminal +
not elongate +
C. demissa var. melanocarpa +, Prunus demissa +, P. demissa var. melanocarpa +, P. melanocarpa +, P. virginiana subsp. demissa +, P. virginiana subsp. melanocarpa +  and P. virginiana var. melanocarpa +
Prunus virginiana var. demissa +
Prunus virginiana +
variety +
callus-tipped +  and eglandular +
ascending +  and spreading +
inconspicuous +
hairy +  and glabrous +
tree +, suckering +  and shrub +
hairy +  and glabrous +