Difference between revisions of "Delphinium treleasei"

Bush ex K. C. Davis

Minnesota Bot. Stud. 2: 444. 1900.

Common names: Trelease's larkspur
EndemicIllustrated
Treatment appears in FNA Volume 3.
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V3/V3_713.xml
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|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V3/V3_713.xml
 
|genus=Delphinium
 
|genus=Delphinium
 
|section=Delphinium sect. Diedropetala
 
|section=Delphinium sect. Diedropetala

Latest revision as of 22:50, 5 November 2020

Stems (40-)60-80(-110) cm; base reddish, glabrous, glaucous. Leaves mostly basal; basal leaves 3-7 at anthesis; cauline leaves 1-3 at anthesis; petiole 0.5-19 cm. Leaf blade round to reniform, 0.5-8 × 2-20 cm, glabrous; ultimate lobes 3-35(-56), 5 or more extending more than 3/5 distance to petiole, width 2-6 mm (basal), 0.5-2 mm (cauline), widest at middle or in proximal 1/2. Inflorescences 5-30(-56)-flowered; pedicel (1-)2.5-7(-11) cm, glabrous; bracteoles 1-7(-46) mm from flowers, blue or green, awl-shaped, 1.5-4(-12) mm, glabrous. Flowers: sepals dark bright blue, usually retaining color upon drying, nearly glabrous, lateral sepals spreading, (10-)12-17(-20) × 4-8(-10) mm, spurs straight, ascending ca. 45°, 15-17 mm; lower petal blades ± covering stamens, 5-8 mm, clefts (1-)3-5 mm; hairs centered, densest above base of cleft, yellow. Fruits 12-18(-22) mm, 3-4 times longer than wide, glabrous. Seeds unwinged; seed coat cell surfaces smooth. 2n = 16.


Phenology: Flowering late spring.
Habitat: Open juniper glades on calcareous substrate
Elevation: 250-450 m

Discussion

Delphinium treleasei is locally abundant but extremely limited by microhabitat within its distributional range.

Hybrids between Delphinium treleasei and D. carolinianum subsp. carolinianum are known.

Selected References

None.

Lower Taxa

None.