Difference between revisions of "Delphinium subsect. Bicoloria"
Bot. Zhurn. (Moscow & Leningrad) 72: 687. 1987.
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|genus=Delphinium | |genus=Delphinium | ||
|section=Delphinium sect. Diedropetala | |section=Delphinium sect. Diedropetala | ||
Latest revision as of 21:52, 5 November 2020
Roots 2-9-branched at least 1 cm from stem attachment, (5-)10-30(-40) cm, diffuse-fibrous, ± braided, dry; buds minute. Stems 1(-2) per root, usually unbranched, elongation delayed 2-6(-10) weeks after leaf initiation; base ± narrowed, ± tenuously attached to root; proximal internodes much shorter than those of midstem. Leaves basal and cauline, largest leaves near base of stem, others often abruptly smaller on distal portion of stem; basal petioles spreading, cauline petioles ascending; blade shape and lobing similar throughout. Inflorescences usually with 2-6 flowers per 5 cm, open, ± pyramidal, seldom more than 3 times longer than wide, spurs rarely intersecting rachis; pedicel spreading, usually more than 1.5 cm, rachis to midpedicel angle more than 30°; bracts markedly smaller and fewer lobed than leaves. Fruits spreading. Seeds obpyramidal, 1.6-2.9 × 0.7-1.9 mm, ± ringed at proximal end, usually wing-margined; seed coats lacking wavy ridges, cells elongate, cell margins straight.
Distribution
w North America.
Discussion
Species 6 (6 in the flora).
Selected References
None.
Lower Taxa
Key
| 1 | Sepals red or yellow. | > 2 |
| 1 | Sepals usually bluish, not red or yellow (sometimes maroon, white, or pink). | > 3 |
| 2 | Sepals red to reddish orange, not waxy. | Delphinium nudicaule |
| 2 | Sepals bright yellow, appearing waxy. | Delphinium luteum |
| 3 | Sepals maroon; plants distinctly different from other individuals within populations. | > 4 |
| 3 | Sepals blue or pink; plants usually similar to other individuals within populations. | > 6 |
| 4 | Leaf segments more than 5, 5 mm or less wide. | > 4 |
| 4 | Leaf segments 5 or fewer, more than 5 mm wide. | > 5 |
| 5 | Proximal portion of stem hairy. | > 5 |
| 5 | Proximal portion of stem glabrous. | > 3 |
| 6 | Leaves mostly above proximal 1/3 of stem; flowers usually more than 15 per main inflorescence axis. | > 6 |
| 6 | Leaves mostly on proximal 1/3 of stem; flowers usually fewer than 20 per main inflorescence axis. | > 7 |
| 7 | Sepals pinkish; plants distinctly different from other individuals within populations. | > 8 |
| 7 | Sepals dark blue to white; plants usually similar to other individuals within populations. | > 9 |
| 8 | Plants in populations with red flowers. | > 8 |
| 8 | Plants in populations with blue flowers. | > 7 |
| 9 | Leaves ± succulent, clustered on proximal portion of stem. | > 10 |
| 9 | Leaves not succulent, clustered on proximal portion of stem or not. | > 11 |
| 10 | Lateral sepals dark blue to white, spreading to reflexed. | Delphinium antoninum |
| 10 | Lateral sepals dark blue, spreading. | Delphinium glareosum |
| 11 | Lower petal blade cleft usually less than 1/3 blade length. | Delphinium bicolor |
| 11 | Lower petal blade cleft more than 1/3 blade length. | Delphinium basalticum |