Berberis trifoliolata |
Berberis pinnata |
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agarito, agritos, algerita, currant-of-Texas |
California barberry, California Oregon-grape, shiny leaf mahonia |
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Habit | Shrubs, evergreen, 1-3.5 m. Stems ± dimorphic, with elongate primary and short axillary shoots. | Shrubs, evergreen, 0.3-1.6(-7) m. Stems usually monomorphic, seldom with short axillary shoots. | ||||
Bark | of 2d-year stems gray or grayish purple, glabrous. |
of 2d-year stems grayish brown, glabrous. |
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Leaves | 3-foliolate; petioles 0.8-5.4 cm. |
(3-)5-13-foliolate; petioles 0.5-4.5(-7.5) cm. |
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Leaflet | blades thick and rigid; surfaces abaxially dull, papillose, adaxially dull, ± glaucous; terminal leaflet sessile, blade 2.3-5.8 × 0.9-2 cm, 1.6-3.1 times as long as wide; lateral leaflet blades narrowly lanceolate or narrowly elliptic, 1-veined from base, base acute or acuminate, rarely rounded-acute, margins plane, toothed or lobed, with 1-3 teeth or lobes 3-7 mm high tipped with spines to 1-2 × 0.2-0.3 mm, apex narrowly acute or acuminate. |
blades thin and ± rigid or flexible; surfaces abaxially glossy, smooth, adaxially glossy, green; terminal leaflet stalked, blade 2.6-6.2 × 2-4.5 cm, 1.3-1.9 times as long as wide; lateral leaflet blades elliptic to ovate or broadly lanceolate, 1(-3)-veined from base, base broadly obtuse, truncate, or weakly cordate, margins plane to crispate, toothed, each with 5-22 teeth 0-2 mm tipped with spines to 1-3 × 0.1-0.3 mm, apex acute to rounded-obtuse. |
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Spines | absent. |
absent. |
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Inflorescences | racemose, lax, 1-8-flowered, 0.5-3 cm; bracteoles membranous, apex acuminate. |
racemose, dense, 25-50-flowered, 2-9 cm; bracteoles membranous, apex rounded to broadly acute, sometimes apiculate. |
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Flowers | anther filaments without distal pair of recurved lateral teeth. |
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Berries | red, sometimes glaucous, spheric, 6-11 mm, juicy, solid. |
blue, glaucous, oblong-ovoid to subspheric, 6-7 mm, juicy, solid. |
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Bud | scales 2-3 mm, deciduous. |
scales 3-7 mm, deciduous. |
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Anther | filaments with distal pair of recurved lateral teeth. |
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Berberis trifoliolata |
Berberis pinnata |
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Phenology | Flowering winter–spring (Feb–Apr). | |||||
Habitat | Slopes and flats in grassland, shrubland, and sometimes open woodland | |||||
Elevation | 0-2000 m (0-6600 ft) | |||||
Distribution |
AZ; NM; TX; n Mexico
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CA; OR; Mexico (Baja California)
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Discussion | The illegitimate name Berberis trifoliolata Moricand var. glauca (I. M. Johnston) M. C. Johnston has been used for plants with very strongly glaucous leaves. Weakly and strongly glaucous plants are often found in the same population, however, indicating that they are not distinct varieties. Berberis trifoliolata is susceptible to infection by Puccinia graminis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Subspecies 2 (2 in the flora). Berberis pinnata is very similar to B. aquifolium, and the two are sometimes difficult to separate. Some authors have used the spacing of the lateral leaflets (said to be contiguous or imbricate in B. pinnata and remote in B. aquifolium) to separate them, but the leaflets are often remote in both species and may be contiguous in B. aquifolium. Berberis pinnata is resistant to infection by Puccinia graminis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 3. | FNA vol. 3. | ||||
Parent taxa | Berberidaceae > Berberis | Berberidaceae > Berberis | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Mahonia trifoliolata | Mahonia pinnata | ||||
Name authority | Moricand: Pl. Nouv. Amér., 113. (1841) | Lagasca: Elench. Pl., 14. (1816) | ||||
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