Difference between revisions of "Delphinium hesperium subsp. pallescens"

(Ewan) H. F. Lewis & Epling

Brittonia 8: 10. 1954.

Common names: Pale-flowered western larkspur
Endemic
Basionym: Delphinium hesperium A. Gray forma pallescens Ewan
Treatment appears in FNA Volume 3.
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--><span class="statement" id="st-d0_s0" data-properties="stem pubescence"><b>Stems </b>usually glabrous.</span> <span class="statement" id="st-d0_s1" data-properties="inflorescence architecture;inflorescence architecture"><b>Inflorescences </b>usually fewer than 25-flowered, open;</span> <span class="statement" id="st-d0_s2" data-properties="pedicel orientation">pedicel ± spreading.</span> <span class="statement" id="st-d0_s3" data-properties="sepal coloration;sepal coloration;sepal coloration;sepal coloration;sepal orientation;lateral sepal some measurement;lateral sepal width;spur some measurement"><b>Flowers:</b> sepals white to pinkish, rarely light blue, spreading, lateral sepals 10-15 mm, more than 4 mm wide, spurs 10-17 mm;</span> <span class="statement" id="st-d0_s4" data-properties="petal blade some measurement">lower petal blades 4-7 mm.</span> <span class="statement" id="st-d0_s5" data-properties=""><b>Fruits </b>3-3.5 times longer than wide.</span> <span class="statement" id="st-d0_s6" data-properties="fruit l w ratio;2n chromosome quantity">2n = 16.</span><!--
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--><span class="statement" id="st-undefined" data-properties=""><b>Stems </b>usually glabrous. <b>Inflorescences</b> usually fewer than 25-flowered, open; pedicel ± spreading. <b>Flowers</b>: sepals white to pinkish, rarely light blue, spreading, lateral sepals 10-15 mm, more than 4 mm wide, spurs 10-17 mm; lower petal blades 4-7 mm. <b>Fruits</b> 3-3.5 times longer than wide. <b>2n</b> = 16.</span><!--
  
 
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|publication year=1954
 
|publication year=1954
 
|special status=Endemic
 
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-fine-grained-xml.git/src/287ef3db526bd807d435a3c7423ef2df1e951227/V3/V3_765.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_765.xml
 
|genus=Delphinium
 
|genus=Delphinium
 
|section=Delphinium sect. Diedropetala
 
|section=Delphinium sect. Diedropetala
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|species=Delphinium hesperium
 
|species=Delphinium hesperium
 
|subspecies=Delphinium hesperium subsp. pallescens
 
|subspecies=Delphinium hesperium subsp. pallescens
|2n chromosome quantity=16
 
|fruit l w ratio=3-3.5
 
|inflorescence architecture=open;0-25-flowered
 
|lateral sepal some measurement=10mm;15mm
 
|pedicel orientation=spreading
 
|petal blade some measurement=4mm;7mm
 
|sepal coloration=light blue;white;pinkish
 
|sepal orientation=spreading
 
|spur some measurement=10mm;17mm
 
|stem pubescence=glabrous
 
 
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-->[[Category:Treatment]][[Category:Delphinium hesperium]]
 
-->[[Category:Treatment]][[Category:Delphinium hesperium]]

Revision as of 14:49, 27 July 2019

Stems usually glabrous. Inflorescences usually fewer than 25-flowered, open; pedicel ± spreading. Flowers: sepals white to pinkish, rarely light blue, spreading, lateral sepals 10-15 mm, more than 4 mm wide, spurs 10-17 mm; lower petal blades 4-7 mm. Fruits 3-3.5 times longer than wide. 2n = 16.


Phenology: Flowering spring.
Habitat: Open oak woods and grassland
Elevation: 20-1000 m

Discussion

Delphinium hesperium subsp. pallescens grows only east of the Coast Range divide. It hybridizes with D. gypsophilum, D. parryi, D. recurvatum, D. uliginosum, and D. variegatum. Light blue sepals probably result from introgression involving D. variegatum, D. parryi, or D. hesperium subsp. hesperium. Intermediates are occasionally found between D. hesperium subsp. pallescens and subsp. hesperium (particularly in Napa County), but the two taxa remain, for the most part, geographically isolated.

Delphinium hesperium subsp. pallescens has sometimes been confused with D. gypsophilum or with white-flowered plants of D. hansenii; see discussion under those species.

Selected References

None.

Lower Taxa

None.