Cotoneaster divaricatus

Rehder & E. H. Wilson in C. S. Sargent

in C. S. Sargent, Pl. Wilson. 1: 157. 1912.

Common names: Spreading or stretch-fruit cotoneaster
IllustratedIntroduced
Treatment appears in FNA Volume 9. Treatment on page 461. Mentioned on page 449, 453, 460, 463.

Shrubs, 1.5–2 m; crown spreading, rounded. Stems erect; branches divaricate or spiraled, spreading, lateral branches well developed, usually arching, long, brownish violet, initially strigose. Leaves deciduous; petiole 3–4 mm, strigose; blade elliptic, rarely ovate or suborbiculate, on sterile shoots usually elliptic or broadly elliptic, 10–30 × 7–21 mm, chartaceous, base obtuse, margins flat, not revolute, sometimes undulate, veins 3 or 4, superficial or slightly sunken, apex acute, rarely acuminate, abaxial surfaces pale green, initially strigose, adaxial dark green, shiny, not glaucous, flat between lateral-veins, initially sparsely strigose; fall leaves orange, red, or reddish purple. Inflorescences on fertile shoots 10–20 mm with 4 leaves, 1–4-flowered, compact. Pedicels 1–3 mm, strigose. Flowers 6–8 mm, opening small; hypanthium cupulate, strigose; sepals: margins villous, apex acute or acuminate, surfaces strigose; petals erect-incurved, pale-red, base dark red, border white; stamens 10–15, filaments dark red, whitish distally, anthers white; styles (1 or) 2 (or 3). Pomes dark red to ruby (finally blackish red), cylindric, oblong-ellipsoid, or narrowly obovoid, 8–11 × 4–8 mm, shiny, not glaucous, sparsely pilose; sepals suberect, sparsely pilose; navel open; style remnants 2/3 from base. Pyrenes (1 or) 2 (or 3) [rarely 4].


Phenology: Flowering Apr–May; fruiting Sep–Dec.
Habitat: Thickets, edges, disturbed forests, flood plains, rarely epiphytic on maple
Elevation: 0–700 m

Distribution

V9 776-distribution-map.jpg

Introduced; B.C., Ont., Ill., Ind., Ky., Mass., Mich., N.Y., Ohio, Oreg., Pa., Wash., Wis., Asia (China), also in Europe

Discussion

Although rarely collected, Cotoneaster divaricatus is the most widely escaped cotoneaster in eastern North America. Misidentified specimens of it have been reported from New York as C. hupehensis Rehder & E. H. Wilson (R. S. Mitchell and G. C. Tucker 1997), from Illinois as C. acutifolius (J. T. Kartesz and C. A. Meacham 2003), from Indiana and Ontario as C. horizontalis (Kartesz and Meacham), from Kentucky as C. apiculatus Rehder & E. H. Wilson (Kartesz and Meacham), and from Wisconsin as C. lucidus (Kartesz and Meacham).

Selected References

None.

Lower Taxa

None.

... more about "Cotoneaster divaricatus"
reddish purple +, red +, orange +  and dark green +
strigose +  and not glaucous +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Jeanette Fryer +, Bertil Hylmö† +  and Peter F. Zika +
Rehder & E. H. Wilson in C. S. Sargent +
compound +  and simple +
opposite +  and alternate +
15 cm150 mm <br />0.15 m <br /> (21 cm210 mm <br />0.21 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
suborbiculate +, ovate +  and elliptic +
0.4 cm4 mm <br />0.004 m <br /> (15 cm150 mm <br />0.15 m <br />) +
leathery +  and membranous +
7mm +  and 21mm +
spiraled +  and divaricate +
adnate +  and distinct +
strigose +  and tomentose +
Spreading or stretch-fruit cotoneaster +
rounded +
B.C. +, Ont. +, Ill. +, Ind. +, Ky. +, Mass. +, Mich. +, N.Y. +, Ohio +, Oreg. +, Pa. +, Wash. +, Wis. +, Asia (China) +  and also in Europe +
not +  and aggregated +
0–700 m +
whitish +  and dark red +
hairy +  and glabrous +
unisexual +  and bisexual +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
not +  and aggregated +
not +  and aggregated +
1.4 cm14 mm <br />0.014 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
orange +  and red or purple +
0.4 cm4 mm <br />0.004 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
Thickets, edges, disturbed forests, flood plains, rarely epiphytic on maple +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
flattened +  and domed +
crassinucellate +
deciduous +
pinnate +  and entire +
2 +  and 14 +
undulate +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
erect-incurved +
1 +  and 5 +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering Apr–May +  and fruiting Sep–Dec. +
adnate +, free +, connate +  and distinct +
dark red +  and ruby +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
pilose +  and not glaucous +
obovoid +, oblong-ellipsoid +  and cylindric +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
in C. S. Sargent, Pl. Wilson. +
trigonous +  and planoconvex +
not arillate +
persistent +
free +  and distinct +
triangular +
fertile +  and sterile +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
tomentose +  and strigose +
Illustrated +  and Introduced +
free +  and distinct +
branched +  and simple +
1 +  and 25 +
short-adnate +
inconspicuous +
lanceolate;linear +
deciduous +
distinct +
lateral +  and terminal +
elongate +
Ostinia +
Cotoneaster divaricatus +
Cotoneaster +
species +
inconspicuous +
superficial +
4 +  and 3 +