Difference between revisions of "Crataegus oakesiana"

Eggleston

Torreya 7: 35. 1907.

Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 601. Mentioned on page 595.
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|publication year=1907
 
|publication year=1907
 
|special status=Conservation concern;Endemic
 
|special status=Conservation concern;Endemic
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V9/V9_1031.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V9/V9_1031.xml
 
|subfamily=Rosaceae subfam. Amygdaloideae
 
|subfamily=Rosaceae subfam. Amygdaloideae
 
|tribe=Rosaceae tribe Gillenieae
 
|tribe=Rosaceae tribe Gillenieae

Latest revision as of 23:53, 5 November 2020

Shrubs, 60 dm. Stems: twigs: new growth green, glabrous, 1-year old shiny, mid brown, older deep gray; thorns on twigs frequent, recurved, 1-year old shiny reddish to blackish brown, slender to moderately thick, 2–4.5 cm. Leaves: petiole length 40% blade, glabrous, densely glandular; blade broadly ovate to oblong-ovate or broadly elliptic, smaller sometimes ± rhombic, 3–5 cm, on extension shoots larger, often suborbiculate, thin to chartaceous, base cuneate to broadly cuneate or ± rounded, lobes 4 or 5 per side, sinuses shallow, lobe apex triangular, margins serrate teeth numerous, small, veins 6–8 per side, apex acute, abaxial surface glabrous, adaxial densely appressed-scabrous young, glabrescent. Inflorescences 6–10-flowered; branches pilose; bracteoles linear, membranous, margins sessile-glandular. Flowers 16 mm diam.; hypanthium pubescent; sepals narrowly triangular, 6 mm, margins glandular, sometimes barely glandular-serrate, abaxially glabrous; stamens 20, anthers cream; styles 3 or 4. Pomes reddish, broadly ellipsoid to suborbicular, 11–14 mm diam., smooth, glabrous; sepals spreading, often erose; pyrenes 3 or 4.


Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Rocky outcrops
Elevation: 100–200 m

Discussion

Of conservation concern.

Crataegus oakesiana is not very different from C. chrysocarpa var. vigintistamina, differing primarily in its suborbiculate extension-shoot leaves.

Selected References

None.

Lower Taxa

None.