Crataegus douglasii Lindley (Q4365)
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Crataegus douglasii is a taxon with the rank species within the series Crataegus ser. Douglasianae
| Language | Label | Description | Also known as |
|---|---|---|---|
| English |
Crataegus douglasii Lindley
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Crataegus douglasii is a taxon with the rank species within the series Crataegus ser. Douglasianae
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Statements
taxon/id/Crataegus douglasii Lindley
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Crataegus douglasii Lindley
Crataegus douglasii
Lindley
FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
accepted
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CA-AB
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Moss, E.H. 1983. Flora of Alberta. 2nd edition, revised by J.G. Packer. University of Toronto Press, Toronto. 687 pp.
CA-BC
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Douglas, G.W., G.B. Straley, D.V. Meidinger & J. Pojar. 1998. Illustrated Flora of British Columbia. B.C. Ministry of Environment, Lands & Parks and B.C. Ministry of Forests. Victoria. Crown Publications. 8 vols.
CA-ON
1 reference
Newmaster, S.G., A. Lehela, M.J. Oldham, P.W.C. Uhlig & S. McMurray. 1998. Ontario Plant List. Ontario Forest Research Institute, Sault Ste. Marie, Ontario. Forest Information Paper No. 123. 550 pp.
CA-QC
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Scoggan, H.J. 1978-79. The Flora of Canada. Parts 1-4. National Museum of Natural Sciences, Publications in Botany 7. 4 volumes.
CA-SK
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Harms, V.L. 2006. Annotated catalogue of Saskatchewan vascular plants. http://www.biodiversity.sk.ca/Docs/AnnotatedCatalogueSKVascPlants2006.pdf
CA-AB
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CA-BC
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CA-ON
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CA-SK
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US-AK
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US-CA
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US-ID
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US-MI
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US-MN
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US-MT
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US-OR
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US-WA
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US-WI
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50–1600 m
50 meter
1,600 meter
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Stems: 1-year old twigs deep tan to dark mahogany, ± shiny young, older gray to dark gray, often showing brown or alternatively tan-brown eastward;
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thorns on twigs straight or slightly recurved, deep brown young, (1.5–) 2–3.5 cm.
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Leaves: petiole 0.7–1.5 cm, pubescent young, slightly glandular;
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blade usually elliptic to broadly elliptic or subrhombic (elliptic-obovate when lobes very small), 4–7 cm, lobes 2–4 per side, sinuses shallow, LII 10–20%, lobe apex subobtuse to acute, margins coarsely, sharply serrate, teeth small, gland-tipped young, venation craspedodromous, veins 4 or 5 per side, apex acute to obtuse, abaxial surface usually glabrous except on veins, adaxial densely short-appressed-pubescent.
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Inflorescences 10–25-flowered;
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branches glabrous;
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bracteole margins stipitate or sessile-glandular.
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Flowers 10–15 mm diam.;
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hypanthium glabrous;
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sepals broadly triangular, 3–4 mm, margins sparsely glandular, adaxially glabrous;
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stamens 10, anthers pink;
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Pomes vinous and usually waxy glaucous young, dull black mature, usually ellipsoid, 6–8 mm diam., glabrous;
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sepal remnants reflexed, apex obtuse;
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pyrenes 3 or 4, sides excavated, sometimes only shallowly.
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