Overview

Distribution

Global Range: Edges of CO desert, Old Woman Mts., Sheephole Mts., Eagle Mts.(Mohave desert) to AZ and lower CA.

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Ariz, Calif., Nev.; Mexico (Baja California, Sonora).
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Physical Description

Morphology

Description

Plants caulescent; rosettes from woody, branched caudices and forming small colonies. 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. Scape 6–24 dm, 15–45 cm diam. Inflorescences compound paniculate, 7–13 dm × 13–70(–110) cm; bracts caducous, 3.5–16 cm; bractlets short-laciniate. 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. Capsules thin-walled, 8–12 mm × 8–12 mm, notched basally and apically. Seeds grayish, ovoid to oblong, 2.5–3.5 mm.
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Diagnostic Description

Synonym

Dasylirion bigelovii Torrey in W. H. Emory, Rep. U.S. Mex. Bound. 2(1): 151. 1857; Beaucarnea bigelovii (Torrey) Baker
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Ecology

Habitat

Comments: Dry slopes, creosote bush scrub below 3000 feet.

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Rocky hillsides and flats of the southern Mojave and Sonoran deserts; 300--1500m.
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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering mid spring.
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

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Wikipedia

Nolina bigelovii

Nolina bigelovii, Bigelow's nolina or beargrass, is a flowering plant native to the Southwestern United States, California, and Northwest Mexico. It grows in the driest desert areas and at elevations up to 1,500 metres (4,900 ft) .

Contents

Distribution

In Arizona, Nevada, and southern California, Nolina bigelovii is especially prevalent along the Lower Colorado River Valley, especially in the western Arizona Sonoran Desert, but also regions of the mountains of southern California's Colorado Desert. The species ranges in the Peninsular Ranges of Baja California-(the north state), as well as Isla Ángel de la Guarda in the northern Sea of Cortez. Its northeast range extent is in the Grand Canyon of Arizona.[1]

Description

The Nolina bigelovii plant is not a grass. The trunklike stem may exceed 2 metres (6.6 ft) in height, part of which may be underground. The stiff, shreddy leaves are arranged in rosettes about the stem, with up to 150 per rosette. The bases are thick and fleshy and much wider than the rest of the blade.

The treelike inflorescence may approach 4 metres (13 ft) in height. The tiny flowers each have six whitish tepals a few millimeters in length.

References

  1. ^ Little. Atlas of United States Trees, Volume 3, Minor Western Hardwoods, Map 102, Nolina bigelovii.
  • Little. Atlas of United States Trees, Volume 3, Minor Western Hardwoods, Little, Elbert L, 1976, US Government Printing Office. Library of Congress No. 79-653298. Map 102, Nolina bigelovii.
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