Delphinium lineapetalum |
Delphinium polycladon |
|
---|---|---|
thinpetal larkspur |
high mountain larkspur, mountain marsh larkspur |
|
Stems | (15-)30-60 cm; base usually reddish, glabrous to glaucous. |
(20-)60-100(-160) cm; base reddish or not, glabrous. |
Leaves | blade round, 1-5 × 2-6 cm, glabrous; ultimate lobes 5-16, width 1-4 mm (basal), 0.5-3 mm (cauline). |
blade round to pentagonal, 1.5-7 × 2-14 cm, glabrous; ultimate lobes 3-12, width 4-30(-45) mm (basal), 3-30 mm (cauline). |
Inflorescences | (3-)9-24(-40)-flowered, pyramidal; pedicel spreading, 1-2.5 cm, glabrous or glandular-puberulent; bracteoles 4-7 mm from flowers, blue or green, linear, 1-3 mm, glabrous or glandular-puberulent. |
3-15(-35)-flowered, open, often ± secund; pedicel 1-4(-15) cm, glabrous to puberulent; bracteoles 2-8(-37) mm from flowers, green, linear, 4-7(-11) mm, nearly glabrous. |
Flowers | sepals light blue to lavender, nearly glabrous, lateral sepals reflexed, 10-13 × 3-5 mm, spurs straight to slightly decurved, nearly horizontal to ascending ca. 30°, 11-17 mm; lower petal blades elevated, exposing stamens, 3-5 mm, clefts 0.5-2 mm; hairs centered mostly on inner lobes near base of cleft, white. |
sepals bluish purple, nearly glabrous, lateral sepals spreading, (10-)12-18 × 7-10 mm, spurs usually downcurved, ca. 30° below horizontal, 11-22 mm; lower petal blades slightly elevated, ± exposing stamens, 4-6 mm, clefts 1-2 mm; hairs mostly near base of cleft on inner lobes, yellow, sometimes white. |
Fruits | 13-21 mm, 4-4.5 times longer than wide, puberulent to glabrous. |
13-20 mm, 3.5-4 times longer than wide, puberulent. |
Seeds | seed coat cells narrow, short, cell margins straight, surfaces smooth. |
unwinged; seed coat cells with surfaces roughened. |
2n | = 16. |
|
Delphinium lineapetalum |
Delphinium polycladon |
|
Phenology | Flowering spring. | Flowering summer–early autumn. |
Habitat | Open pine woods, dry meadows | Wet sites near springs, streamsides, bogs, and wet talus |
Elevation | 400-1800 m (1300-5900 ft) | 2200-3600 m (7200-11800 ft) |
Distribution |
WA
|
CA; NV
|
Discussion | Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Delphinium polycladon hybridizes with D. depauperatum and D. glaucum. Plants of D. polycladon are extremely variable. Individuals from very rocky, thin-soiled, sunny sites at higher elevations tend to be quite compact; they show the features of the species in a dwarfed state. Proximal internodes are especially shortened. Plants from areas of deeper soil (high or low elevations), especially those growing among shrubs, usually are much taller, with elongate proximal internodes, and other vegetative parts proportionally larger. Shorter plants may be confused with D. depauperatum or D. nuttallianum; see discussion under those species for distinguishing features. Taller plants may be confused with D. glaucum; they can be distinguished by their leaves predominately on proximal part of stem, sigmoid pedicel, and fewer flowers. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Subscaposa | Ranunculaceae > Delphinium > sect. Diedropetala > subsect. Multiplex |
Sibling taxa | ||
Synonyms | D. nuttallianum var. lineapetalum | D. scopulorum var. luporum |
Name authority | Ewan: Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 126. (1945) | Eastwood: Bull. Torrey Bot. Club 28: 669. (1901) |
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