1 |
Sepals yellowish, white, or pink; if white then white in most members of the population. |
|
(2) |
+ |
Sepals bluish, maroon, or purple, not yellowish; if white then only as sporadic individuals in a population. |
|
(8) |
|
|
|
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2 (1) |
Flowers with no trace of pink or lavender. |
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(3) |
+ |
Flowers (especially sepal spur) with some element of pink or lavender. |
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(5) |
|
|
|
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3 (2) |
Spurs less than 12 mm; sepals spreading to erect. |
|
54 Delphinium nuttallii |
+ |
Spurs more than 11 mm; sepals widely spreading; lower petals usually yellow. |
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(4) |
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|
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4 (3) |
Stems less than 60 cm; widest leaf lobe less than 1 cm wide. |
|
52 Delphinium menziesii |
+ |
Stems more than 60 cm; widest leaf lobe more than 1 cm wide. |
|
52 Delphinium menziesii |
|
|
|
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5 (2) |
Stems less than 50(-70) cm; plants with sepal color similar to that of most other individuals in the population. |
|
(6) |
+ |
Stems more than (40-)50 cm; plants with sepal color dissimilar from that of most other individuals in the population. |
|
(7) |
|
|
|
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6 (5) |
Seeds with elongate blunt hairs on surface. |
|
55 Delphinium tricorne |
+ |
Seeds lacking elongate blunt hairs. |
|
61 Delphinium nuttallianum |
|
|
|
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7 (5) |
Plants in populations with red flowers. |
|
47 Delphinium nudicaule |
+ |
Plants in populations with blue flowers. |
|
49 Delphinium trolliifolium |
|
|
|
|
8 (1) |
Sepals maroon; plants usually distinctly different individuals within populations. |
|
(9) |
+ |
Sepals bluish or purple; plants usually similar to other individuals in populations. |
|
(10) |
|
|
|
|
9 (8) |
Stems puberulent proximally. |
|
47 Delphinium nudicaule |
+ |
Stems glabrous proximally. |
|
47 Delphinium nudicaule |
|
|
|
|
10 (8) |
Leaves mostly borne on distal 2/3 of stems at anthesis; flowers usually more than 15 per main inflorescence axis. |
|
(11) |
+ |
Leaves mostly borne on proximal 1/3 of stems; flowers often fewer than 20 per main inflorescence axis. |
|
(17) |
|
|
|
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11 (10) |
Inflorescences as wide as long or nearly so. |
|
56 Delphinium newtonianum |
+ |
Inflorescences at least 2 times longer than wide. |
|
(12) |
|
|
|
|
12 (11) |
Sepals light blue. |
|
49 Delphinium trolliifolium |
+ |
Sepals dark blue to bluish purple. |
|
(13) |
|
|
|
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13 (12) |
Lobes of midcauline leaves more than 6 mm wide; stems more than (40-)60 cm. |
|
(14) |
+ |
Lobes of midcauline leaves less than 6 mm wide; stems less than 60(-90) cm. |
|
(15) |
|
|
|
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14 (13) |
Leaf margins crenate. |
|
50 Delphinium bakeri |
+ |
Leaf margins ±incised. |
|
49 Delphinium trolliifolium |
|
|
|
|
15 (13) |
Sepals bluish purple (±drab) and often partly fading upon drying (especially veins, giving sepals of dried specimens mottled appearance). |
|
54 Delphinium nuttallii |
+ |
Sepals dark deep blue and retaining color upon drying. |
|
(16) |
|
|
|
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16 (15) |
Lower petals white, yellowish, or tan; lower petal blade clefts no more than 1/3 blade length. |
|
53 Delphinium sutherlandii |
+ |
Lower petals blue to purple; lower petal blade clefts at least 1/3 blade length. |
|
61 Delphinium nuttallianum |
|
|
|
|
17 (10) |
Sepals dark blue-purple (± drab), often partly fading upon drying (especially veins, giving sepals of dried specimens mottled appearance), distinctly puberulent externally, usually not reflexed; lower stem pubescent. |
|
(18) |
+ |
Sepals bright blue or purple (not drab blue-purple), usually retaining color upon drying, usually glabrous, often reflexed; if sepals drab blue-purple, puberulent, and not reflexed, then proximal portion of stems nearly glabrous to glabrous. |
|
(20) |
|
|
|
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18 (17) |
Seeds with swollen, blunt, hairlike protuberances; at least 2/3 of leaves in lower 1/4 of stems; stems more than (45-)60 cm. |
|
58 Delphinium alabamicum |
+ |
Seeds without swollen, blunt, hairlike protuberances; at least 1/3 of leaves above lower 1/4 of stems; stems less than 60(-85) cm. |
|
(19) |
|
|
|
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19 (18) |
Lower petal blade clefts at least 1/3 blade length. |
|
51 Delphinium decorum |
+ |
Lower petal blade clefts no more than 1/4 blade length. |
|
52 Delphinium menziesii |
|
|
|
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20 (17) |
Lateral sepals strongly reflexed; leaf blade with usually 5 or fewer lobes extending 3/5 distance to petiole (if more than 5, then pedicel puberulent), lobes often more than 7 mm wide. |
|
(21) |
+ |
Lateral sepals not reflexed or only weakly so; leaf blade with more than 5 lobes extending more than 3/5 distance to petiole, lobes less than 7 mm wide. |
|
(22) |
|
|
|
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21 (20) |
Pedicels spreading from rachis at nearly 90°; leaf lobes distinctly wedge-shaped, widest in distal 1/2. |
|
59 Delphinium gracilentum |
+ |
Pedicels spreading from rachis at usually less than 70°; leaf lobes less often wedge-shaped, widest near midpoint. |
|
60 Delphinium patens |
|
|
|
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22 (20) |
Cauline leaves 2 or fewer, less than 1/2 size of basal leaves; stems glaucous. |
|
57 Delphinium treleasei |
+ |
Cauline leaves 3 or more, similar in size to basal leaves; stems not glaucous. |
|
(23) |
|
|
|
|
23 (22) |
Inflorescences at least 3 times longer than wide; lower petals tan or yellowish, at least 8 mm. |
|
53 Delphinium sutherlandii |
+ |
Inflorescences less than 3 times longer than wide; lower petals blue (except sometimes in white-flowered plants), 3-8(-11) mm. |
|
(24) |
|
|
|
|
24 (23) |
Seeds with swollen, blunt, hairlike protuberances on surface. |
|
55 Delphinium tricorne |
+ |
Seeds without swollen, blunt, hairlike protuberances. |
|
61 Delphinium nuttallianum |