Difference between revisions of "Crataegus ×dispessa"
J. Elisha Mitchell Sci. Soc. 19: 17. 1903.
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|name=Crataegus pyriformis | |name=Crataegus pyriformis | ||
|authority=Britton | |authority=Britton | ||
| + | |rank=species | ||
|publication_title=Bull. New York Bot. Gard. | |publication_title=Bull. New York Bot. Gard. | ||
|publication_place=1: 449. 1900, | |publication_place=1: 449. 1900, | ||
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|name=C. treleasei | |name=C. treleasei | ||
|authority=Sargent | |authority=Sargent | ||
| + | |rank=species | ||
}} | }} | ||
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Gillenieae;Crataegus;Crataegus ×dispessa | |hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Gillenieae;Crataegus;Crataegus ×dispessa | ||
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name=Crataegus ×dispessa | name=Crataegus ×dispessa | ||
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|authority=Crataegus ×dispessa Ashe | |authority=Crataegus ×dispessa Ashe | ||
|rank=species | |rank=species | ||
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|publication year=1903 | |publication year=1903 | ||
|special status=Endemic | |special status=Endemic | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V9/V9_1096.xml |
|subfamily=Rosaceae subfam. Amygdaloideae | |subfamily=Rosaceae subfam. Amygdaloideae | ||
|tribe=Rosaceae tribe Gillenieae | |tribe=Rosaceae tribe Gillenieae | ||
Revision as of 22:37, 16 December 2019
Trees, 55 dm. Stems: twigs: new growth canescent, 1-year old dark brown, older gray; thorns on twigs absent or few, straight or slightly curved, 1-year old dark purple, 3 cm. Leaves deciduous; petiole slender, length 33–43% blade, distally winged, densely pubescent, eglandular; blade elliptic to suborbiculate, 3–7 cm, base cuneate, lobes 0 or 1–3 per side, apiculi, margins sharply serrate, venation craspedodromous, veins 5 per side, sharply impressed, apex acute, surfaces glabrate, glabrescent, abaxial veins densely pubescent, adaxial appressed-pubescent young. Inflorescences 10–20-flowered; branches tomentose; bracteoles caducous, numerous, linear, ± membranous, margins glandular. Flowers 20–25 mm diam.; hypanthium canescent; sepals narrowly triangular, margins glandular-serrate to glandular-laciniate, abaxial surface densely pubescent; stamens 20, anthers cream, sometimes pink; styles 4 or 5. Pomes crimson, suborbicular, 12–17 mm diam., pubescent; sepals erose or patent; pyrenes 4 or 5, dorsally grooved, sides plane.
Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Brush, along streams and woodland margins
Elevation: 100–200 m
Discussion
Crataegus ×dispessa is found in southern Missouri to Boone County and was last collected in Dallas County.
Crataegus ×dispessa is probably of ser. Molles × C. collina var. hirtiflora parentage, the bracteole type not being characteristic of ser. Molles.
Selected References
None.