Nolina bigelovii |
Nolina microcarpa |
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Bigelow beargrass, Bigelow nolina, Bigelow's nolina |
beargrass, palmilla, sacahuista |
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Habit | Plants caulescent; rosettes from woody, branched caudices and forming small colonies. | Plants acaulescent, cespitose; rosettes from vertical, subterranean, branched caudices. |
Stems | 10–25 dm. |
|
Leaves | 34–160 per rosette; blade stiff, linear-lanceolate, firm, 50–150 cm × 12–48 mm, glaucous, scabrous abaxially; bases spoon-shaped, 35–110 mm wide; margins entire, filiferous. |
blades wiry, lax, concavo-convex, 80–130 cm 5–12 mm, not glaucous; margins serrulate, with close-set, cartilaginous teeth; apex lacerate; inflorescence leaf blades curling distally, 10–50 cm. |
Scape | 6–24 dm, 15–45 cm diam. |
3–15 dm, 1.2–2.5 cm diam. |
Inflorescences | compound paniculate, 7–13 dm × 13–70(–110) cm; bracts caducous, 3.5–16 cm; bractlets short-laciniate. |
paniculate, 4–12 dm × 10–30 cm, surpassing leaves; bracts caducous, rarely persistent; bractlets 2–5 mm, slightly erose. |
Flowers | tepals cream to white, 2–4 mm; fertile stamens: 2–3 mm, anthers to 1 mm; infertile stamens: filaments 0.9–1.4 mm, anthers 0.4–0.6 mm; pedicel erect, proximal to joint 0.5–1 mm, distal to joint 0.5–2 mm. |
tepals white, 1.5–3.3 mm; fertile stamens: filaments 1.6–1.9 mm, anthers 1.2–1.4 mm; infertile stamens: filaments 0.9–1.2 mm, anthers 0.3–0.5 mm; fruiting pedicel erect, proximal to joint 1–2 mm, distal to joint 3–6 mm. |
Capsules | thin-walled, 8–12 mm × 8–12 mm, notched basally and apically. |
hyaline, thin-walled, inflated, 4.2–6 × 5.4–6.4 mm, indistinctly notched at apex. |
Seeds | grayish, ovoid to oblong, 2.5–3.5 mm. |
loosely invested in capsules, compressed, 2.2–3.4 × 1.5–3 mm. |
2n | = 38. |
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Nolina bigelovii |
Nolina microcarpa |
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Phenology | Flowering mid spring. | Flowering mid–late spring. |
Habitat | Rocky hillsides and flats of the southern Mojave and Sonoran deserts | Rocky hillsides, desert grasslands, oak and pinyon pine-juniper woodlands |
Elevation | 300–1500 m (1000–4900 ft) | 900–1900 m (3000–6200 ft) |
Distribution |
AZ; CA; NV; Mexico (Baja California, Sonora)
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AZ; NM; n Mexico
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Discussion | D. S. Correll and M. C. Johnston (1970) included Nolina microcarpa in their flora of Texas; however, they reported that they had seen no specimen from that state, nor have I. This species is found primarily from western New Mexico through central Arizona. It forms large clumps up to 2 m in diameter and inflorescences that generally are exserted from the basal leaf rosettes. Considerable variation occurs, some of it geographically restricted to southeastern Arizona and southwestern New Mexico. Most such plants from the latter areas have been referred to N. texana or N. caudata, but are here included in N. microcarpa. In the Grand Canyon area, there are variants that have been referred to N. parryi because in width the leaves approach those of N. parryi and they are serrulate. These plants, however, are acaulescent and also are here included in N. microcarpa. B. J. Albee et al. (1988) reported N. microcarpa on rocky slopes in canyons in Washington County, Utah, but the more recent online version of that work excludes it from Utah. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 26, p. 421. | FNA vol. 26, p. 418. |
Parent taxa | Agavaceae > Nolina | Agavaceae > Nolina |
Sibling taxa | ||
Synonyms | Dasylirion bigelovii, Beaucarnea bigelovii | N. caudata |
Name authority | (Torrey) S. Watson: Proc. Amer. Acad. Arts 14: 247. (1879) | S. Watson: Proc. Amer. Acad. Arts. 14: 247. (1879) |
Web links |