Difference between revisions of "Crataegus chrysocarpa var. vigintistamina"

J. B. Phipps

J. Bot. Res. Inst. Texas 1: 1008. 2007.

Endemic
Treatment appears in FNA Volume 9. Treatment on page 600. Mentioned on page 597, 601.
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|elevation=100–400 m
 
|elevation=100–400 m
 
|distribution=Ont.;Minn.;N.Y.
 
|distribution=Ont.;Minn.;N.Y.
|discussion=<p>Variety vigintistamina is similar to var. chrysocarpa except with 20 stamens; it is frequent in parts of Minnesota, where it has the intermediate indumentum mentioned under var. chrysocarpa and var. faxonii. Crataegus divergens (Peck) Sargent, a prior name, with 10 to 18 stamens according to Sargent, is known from New York; its type (C. H. Peck 70) has ten stamens, preventing the name from being used for the current taxon.</p>
+
|discussion=<p>Variety vigintistamina is similar to <i></i>var.<i> chrysocarpa</i> except with 20 stamens; it is frequent in parts of Minnesota, where it has the intermediate indumentum mentioned under <i></i>var.<i> chrysocarpa</i> and <i></i>var.<i> faxonii</i>. <i>Crataegus</i> divergens (Peck) Sargent, a prior name, with 10 to 18 stamens according to Sargent, is known from New York; its type (C. H. Peck 70) has ten stamens, preventing the name from being used for the current taxon.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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-->{{#Taxon:
 
-->{{#Taxon:
 
name=Crataegus chrysocarpa var. vigintistamina
 
name=Crataegus chrysocarpa var. vigintistamina
|author=
 
 
|authority=J. B. Phipps
 
|authority=J. B. Phipps
 
|rank=variety
 
|rank=variety
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|publication year=2007
 
|publication year=2007
 
|special status=Endemic
 
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V9/V9_1028.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V9/V9_1028.xml
 
|subfamily=Rosaceae subfam. Amygdaloideae
 
|subfamily=Rosaceae subfam. Amygdaloideae
 
|tribe=Rosaceae tribe Gillenieae
 
|tribe=Rosaceae tribe Gillenieae

Latest revision as of 22:53, 5 November 2020

Shrubs, 20–30 dm. Leaves: blade ovate to rhombic-ovate, base ± cuneate, sinuses: max LII 15–20%, lobe apex acute, veins 3–5 per side, abaxial surface glabrous or lamina sparsely hairy at anthesis, veins hairy, adaxial appressed-scabrous, glabrescent. Inflorescences: branches pubescent. Flowers 15–20 mm diam.; hypanthium hairy; stamens 20, anthers cream or ivory. Pomes red, suborbicular, 8–10 mm diam., glabrous.


Phenology: Flowering May; fruiting Sep–Oct.
Habitat: Open brush
Elevation: 100–400 m

Discussion

Variety vigintistamina is similar to var. chrysocarpa except with 20 stamens; it is frequent in parts of Minnesota, where it has the intermediate indumentum mentioned under var. chrysocarpa and var. faxonii. Crataegus divergens (Peck) Sargent, a prior name, with 10 to 18 stamens according to Sargent, is known from New York; its type (C. H. Peck 70) has ten stamens, preventing the name from being used for the current taxon.

Selected References

None.

Lower Taxa

None.
James B. Phipps +
J. B. Phipps +
Crataegus sect. Rotundifoliae +
Ont. +, Minn. +  and N.Y. +
100–400 m +
Open brush +
Flowering May +  and fruiting Sep–Oct. +
J. Bot. Res. Inst. Texas +
Crataegus columbiana var. chrysocarpa +  and C. rotundifolia var. chrysocarpa +
Crataegus chrysocarpa var. vigintistamina +
Crataegus chrysocarpa +
variety +