Berberis trifoliolata |
Berberis fendleri |
|
---|---|---|
agarito, agritos, algerita, currant-of-Texas |
Colorado barberry |
|
Habit | Shrubs, evergreen, 1-3.5 m. Stems ± dimorphic, with elongate primary and short axillary shoots. | Shrubs, deciduous, 1-2 m. Stems dimorphic, with elongate primary and short axillary shoots. |
Bark | of 2d-year stems gray or grayish purple, glabrous. |
of 2d-year stems purple, glabrous. |
Leaves | 3-foliolate; petioles 0.8-5.4 cm. |
blade narrowly elliptic, 1-veined from base, 1.7-4.6 × 0.6-1.7 cm, thin and flexible, base long-attenuate, margins plane, entire or toothed, each with 3-12 teeth 0-1 mm high tipped with bristles to 0.4-1.4 × 0.1-0.2 mm, apex acute to obtuse or rounded; surfaces abaxially dull or glossy and smooth, adaxially dull or glossy and not glaucous. |
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. |
|
Spines | absent. |
present, simple or 1-2-pinnately branched. |
Inflorescences | racemose, lax, 1-8-flowered, 0.5-3 cm; bracteoles membranous, apex acuminate. |
racemose, lax, 4-15-flowered, 1.5-4.5 cm; bracteoles membranous, apex acuminate. |
Flowers | anther filaments without distal pair of recurved lateral teeth. |
anther filaments without distal pair of recurved lateral teeth. |
Berries | red, sometimes glaucous, spheric, 6-11 mm, juicy, solid. |
red, not glaucous, oblong-ellipsoid, 6-8 mm, juicy, solid. |
Bud | scales 2-3 mm, deciduous. |
scales 1-2 mm, deciduous. |
Berberis trifoliolata |
Berberis fendleri |
|
Phenology | Flowering winter–spring (Feb–Apr). | Flowering spring–summer (May–Aug). |
Habitat | Slopes and flats in grassland, shrubland, and sometimes open woodland | Slopes and canyon bottoms |
Elevation | 0-2000 m (0-6600 ft) | 1300-2700 m (4300-8900 ft) |
Distribution |
AZ; NM; TX; n Mexico
|
CO; NM; UT
|
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.) |
Berberis fendleri is susceptible to infection by Puccinia graminis. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 3. | FNA vol. 3. |
Parent taxa | Berberidaceae > Berberis | Berberidaceae > Berberis |
Sibling taxa | ||
Synonyms | Mahonia trifoliolata | |
Name authority | Moricand: Pl. Nouv. Amér., 113. (1841) | A. Gray: Mem. Amer. Acad. Arts, ser. 2, 4: 5. (1849) |
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