Amorpha californica var. napensis |
Amorpha californica |
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indigo bush, Napa false indigo, Napa false indigo or indigo-bush |
California false indigo, false indigo |
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Habit | Shrubs glabrous or glabrate. | Shrubs, (0.7–)1–3(–4) m; arising from compact, woody root. | ||||||
Stems | smooth, often with spinelike glands, mostly short-pilose to puberulent, glabrate, or glabrous. |
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Leaves | (5–)10–20 cm; stipules linear to narrowly oblong, (2–)4–6 mm; petiole (7–)10–15(–25) mm, glands spinelike, scattered, puberulent or glabrous; rachis glands spinelike, puberulent to short-pilose; leaflets (11–)13–19(–25), stipels acicular, 1–1.5 mm, petiolule 0.7–1.5(–1.8) mm, gland-dotted, pilosulous or glabrous, blade mostly oblong, (8–)15–25(–42) × (6–)10–15(–20) mm, base round to subcordate, margins not revolute, entire or finely crenulate, apex round to obtuse or emarginate, surfaces puberulent to short-pilose or glabrous; midveins terminated by a swollen, globose mucro, 0.2–0.5 mm. |
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Leaflets | blade surfaces glabrous, except midveins adaxially pubescent. |
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Racemes | unbranched, (5–)10–18(–25) cm; rachis often with spinelike glands, pilose; bracteoles linear to lanceolate, 1.5–4 mm, usually gland-dotted, sometimes eglandular, short-pilose. |
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Pedicels | 0.3–1.2 mm, eglandular, mostly puberulent to short-pilose. |
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Flowers | calyx tube narrowly cylindric to funnelform, 2–2.8 mm, distal 1/2 sometimes gland-dotted, puberulent, short-pilose, or glabrous; lobes triangular to narrowly lanceolate, 0.4–2(–2.5) mm; banner reddish purple, broadly obovate, 5–7 × 2.5–4 mm, indistinctly clawed, margins entire; filaments 6–7 mm, connate basally 2–3.2 mm; anthers pale yellow; ovary mostly densely short-pilose. |
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Calyces | tube glab-rous or sparsely short-pilose; lobes 0.4–0.8(–1) mm. |
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Legumes | sessile, 6–8 × 2.5–3.5 mm, margins curved outward abaxially, straight adaxially, at least distal 1/2 gland-dotted, mostly short-pilose. |
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Seeds | olive brown or reddish brown, 3–4 × 1.5–2 mm, smooth. |
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Amorpha californica var. napensis |
Amorpha californica |
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Phenology | Flowering May–Jul. | |||||||
Habitat | Wooded or chaparral slopes. | |||||||
Elevation | 100–600 m. (300–2000 ft.) | |||||||
Distribution |
CA |
w United States; nw Mexico
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Discussion | Of all taxa of Amorpha in the flora area, A. californica is one of the most distinctive, due to the presence of spinelike glands. Of the two varieties, var. californica is the more widespread and common, with var. napensis a localized endemic in a small portion of northern California (Marin, Napa, and Sonoma counties). At this time, var. napensis is not listed by the state of California or any federal agency. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 11. | FNA vol. 11. | ||||||
Parent taxa | ||||||||
Sibling taxa | ||||||||
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Name authority | Jepson: Man. Fl. Pl. Calif., 556. (1925) | Nuttall in J. Torrey and A. Gray: Fl. N. Amer. 1: 306. (1838) | ||||||
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