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32. Ceanothus cuneatus (Hooker) Nuttall in J. Torrey and A. Gray, Fl. N. Amer. 1: 267. 1838.
[F]
Rhamnus cuneata Hooker, Fl. Bor.-Amer. 1: 124. 1831 (as cuneatus)
Shrubs, 0.5–3.5 m. Stems erect, ascending, or spreading, not rooting at nodes; branchlets grayish brown to brown, rigid or flexible, glabrate, puberulent, or tomentulose, hairs straight. Leaves usually both fascicled and not fascicled on same plant, rarely none fascicled; petiole 1–3 mm; blade flat to cupped, elliptic, oblanceolate, obovate, or orbiculate, 4–22(–30) × 3–12(–22) mm, base rounded, margins thick, not revolute, entire or denticulate distal to middle, teeth 0–9, apex obtuse, rounded, truncate, or retuse, abaxial surface pale green, glabrate or glabrous, adaxial surface green, glabrous. Inflorescences axillary or terminal, 0.8–2.5 cm. Flowers: sepals, petals, and nectary white to lavender or blue. Capsules 4–6 mm wide, weakly lobed; valves smooth, horns subapical, prominent, erect, intermediate ridges absent.
Varieties 4 (4 in the flora): w United States, nw Mexico.
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| 1 |
Leaf blades of fascicled and non-fascicled leaves elliptic to widely oblanceolate, length usually 2+ times width; sepals, petals, and nectaries usually white, sometimes pale blue or pale lavender. |
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32a Ceanothus cuneatus var. cuneatus |
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Leaf blades of fascicled and non-fascicled leaves widely oblanceolate, widely obovate, or orbiculate, length usually less than 2 times width, or of fascicled leaves elliptic to narrowly oblanceolate (in var. fascicularis); sepals, petals, and nectaries usually lavender to blue, sometimes pale blue, rarely white |
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(2) |
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| 2 (1) |
Leaf blades of fascicled leaves elliptic to narrowly oblanceolate, 9–15 × 3–6 mm, length usually 2+ times width. |
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32b Ceanothus cuneatus var. fascicularis |
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Leaf blades of fascicled leaves widely oblanceolate, widely obovate, or orbiculate, 4–15 × 3–12 mm, length less than 2 times width |
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(3) |
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| 3 (2) |
Leaf blade margins usually entire, rarely 1–4-toothed, apices rounded, truncate, or retuse. |
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32c Ceanothus cuneatus var. ramulosus |
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Leaf blade margins 5–9-toothed, apices rounded to truncate. |
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32d Ceanothus cuneatus var. rigidus |
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Lower Taxa
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