Sorbus torminalis

(Linnaeus) Crantz

Stirp. Austr. Fasc. 2: 45. 1763.

Common names: Wild service tree
Introduced
Basionym: Crataegus torminalis Linnaeus Sp. Pl. 1: 476. 1753
Treatment appears in FNA Volume 9. Treatment on page 436. Mentioned on page 434, 435.

Trees, to 120 [–200] dm. Stems 1; bark gray; winter buds green to brown, ovoid to ovoid-oblong, 5–10 mm, scales dark-margined, shiny, glutinous, glabrous, ciliate, or villous. Leaves simple; stipules early deciduous, whitish-villous; blade slightly shiny, green to dark green adaxially, ovate to broadly elliptic, 5.5–10.5 × 3–8 cm, margins deeply 1–4 subpalmately lobed, lobes ± triangular, (1–) 1.5–2.5 cm wide, basal sinuses deepest, margins finely serrate, secondary-veins in 4–6 main pairs, apex acute to acuminate, abaxial surface thinly white-hairy to glabrate, adaxial glabrous. Panicles 15–60+-flowered, rounded, 3–17.5 cm diam.; peduncles whitish-villous. Pedicels whitish-villous. Flowers 10–17 mm diam.; hypanthium densely villous, hypanthium plus sepals 5.5–7.5 mm; sepals 1.5–3.5 mm, margins villous and prominently glandular, glands often relatively thick; petals white, elliptic, broadly elliptic, or broadly ovate, 4–7 mm; stamens 20; carpels adnate to hypanthium, apex conic, styles 2, 3.5–4 mm. Infructescences sparsely whitish-villous. Pomes brown, narrowly obovoid, 15–19 × 10–13 mm, dull, not glaucous; lenticels abundant; sepals inconspicuous, incurved. Seeds brown, oblong-lanceoloid, 8.1 × 3.4 mm, slightly asymmetric, slightly flattened. 2n = 34, 68 (Europe).


Phenology: Flowering spring; fruiting fall.
Habitat: Disturbed conifer forests
Elevation: 0–50 m

Distribution

V9 733-distribution-map.jpg

Introduced; Wash., Europe, sw Asia, nw Africa

Discussion

In European gardens, one or more clones of intergeneric hybrids between Pyrus communis and Sorbus are called ×Sorbopyrus auricularis (Knoop) C. K. Schneider. J. Wiśniewska et al. (1969) suggested that S. torminalis may be involved in the parentage of at least one clone.

Selected References

None.

Lower Taxa

None.
... more about "Sorbus torminalis"
thinly white-hairy +  and glabrate +
Peter F. Zika +  and Stéphane M. Bailleul +
(Linnaeus) Crantz +
compound +  and simple +
opposite +  and alternate +
not +  and clawed +
Crataegus torminalis +
green +  and dark green +
5.5 cm55 mm <br />0.055 m <br /> (10.5 cm105 mm <br />0.105 m <br />) +
ovate +  and broadly elliptic +
5 cm50 mm <br />0.05 m <br /> (33 cm330 mm <br />0.33 m <br />) +
? (?) +  and ? (?) +
3cm +  and 8cm +
glutinous +
green +  and brown +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
odd +  and simple +
divided +  and lobed +
tanniferous +
Wild service tree +
Wash. +, Europe +, sw Asia +  and nw Africa +
not +  and aggregated +
0–50 m +
1 cm10 mm <br />0.01 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
rancid +, unpleasant +  and strong +
unisexual +  and bisexual +
not +  and aggregated +
not +  and aggregated +
yellow +, brown +, red +  and orange +
glabrous +, hairy +  and glaucous +
0.4 cm4 mm <br />0.004 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
Disturbed conifer forests +
green +  and red +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
crassinucellate +
deciduous +
alternate +  and opposite +
oblong +  and lanceolate or oblanceolate +
triangular +
1.5cm +  and 2.5cm +
1 +  and 4 +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and basal +
3 +  and 2 +
15-60+-flowered +
3 cm30 mm <br />0.03 m <br /> (17.5 cm175 mm <br />0.175 m <br />) +
hairy +, glaucous +  and glabrous +
whitish-villous +
whitish-villous +
0 (?) +  and 4 (?) +
free +  and distinct +
2 +  and 5 +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering spring +  and fruiting fall. +
adnate +, free +, connate +  and distinct +
1.5 cm15 mm <br />0.015 m <br /> (1.9 cm19 mm <br />0.019 m <br />) +
not glaucous +
obovoid +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Stirp. Austr. Fasc. +
dark-margined +
glutinous +
villous +, ciliate +  and glabrous +
not arillate +
8.1 cm81 mm <br />0.081 m <br /> (?) +
flattened;oblong-lanceoloid +
3.4 cm34 mm <br />0.034 m <br /> (?) +
deciduous +  and persistent +
free +  and distinct +
inconspicuous +
triangular +  and ovate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
Introduced +
free +  and distinct +
branched +  and simple +
ascending +  and erect +
short-adnate +  and free +
whitish-villous +
persistent +
basal +, lateral +, subterminal +  and terminal +
elongate +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glaucous +, hairy +  and glabrous +
Undefined subg. Torminalis +
Sorbus torminalis +
Sorbus subg. Torminaria +
species +
inconspicuous +
hairy +  and glabrous +