Yucca brevifolia Engelm.

Joshua tree (en)

Species

Angiosperms > Asparagales > Asparagaceae > Yucca

Characteristics

Plants usually solitary, erect, arborescent, to 15 m. Stems usually 1, occasionally several–many, simple or usually branched distally; branches 1–3 m. Leaf blade green, 15–35 × 0.7–1.5 cm, rigid, smooth, glabrous, margins nearly entire, minutely denticulate, yellow. Inflorescences erect, paniculate, densely crowded, ca. 1/2 enclosed in rosettes, ellipsoid-ovoid, 3–5.5 × 3–3.8 dm, glabrous. Flowers erect, 4–7 cm; perianth oblong-ellipsoid to globose; tepals barely connate at base, greenish white to cream, lanceolate to oblong, 2.5–7 × 1.1–2.2 cm; filaments 1–1.2 cm; anthers 3–3.2 mm, short-pubescent to papillate; pistil 2–3.5 cm; ovary ovoid, 2.5–3 cm, longer than broad; style ca. 1.6 mm; stigmas distinct. Fruits pendent, capsular, indehiscent, deeply furrowed, ellipsoid, 6–8.5 cm, dry, spongy. Seeds dull black, thin, 8–12 mm diam., smooth.
More
A shrub or small tree. It grows 9-12 m high and spreads 1.5 m wide. The stem branches. The bark is grey or orange-brown. It forms in plates. The leaves are straight and narrow. They have fine teeth along the edge. The flower spikes have greenish flowers. They have an unpleasant smell.
Life form perennial
Growth form tree
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 1.5
Mature height (meter) 9.0 - 9.05
Root system -
Rooting depth (meter) 0.2
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Arid mesas and mountain slopes; usually at elevations from 650-2,200 metres.
More
It is a warm temperate plant. It suits hardiness zones 7-10.
Light 6-8
Soil humidity 2-5
Soil texture 2-5
Soil acidity 5-8
Soil nutriment -
Hardiness (USDA) 7-9

Usage

The flower clusters are partly boiled in salt water to remove bitterness, drained and cooked then eaten. The open flower buds are roasted and eaten. The roots are eaten raw, boiled or roasted. Seeds are eaten.
Uses animal food dye environmental use fiber food material medicinal oil wood
Edible flowers fruits pods roots seeds
Therapeutic use Gonorrhea (unspecified), Emetic (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings, divisions or seedlings. Seeds needs soaking.
Mode cuttings divisions seedlings
Germination duration (days) 30 - 365
Germination temperacture (C°) 18 - 23
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -12
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Habit

Yucca brevifolia habit picture by Daniel Barthelemy (cc-by-nc)
Yucca brevifolia habit picture by Daniel Barthelemy (cc-by-nc)
Yucca brevifolia habit picture by Daniel Barthelemy (cc-by-nc)

Leaf

Yucca brevifolia leaf picture by Pennella Pascal (cc-by-sa)
Yucca brevifolia leaf picture by linda brown (cc-by-sa)
Yucca brevifolia leaf picture by Robert Lewis (cc-by-sa)

Fruit

Yucca brevifolia fruit picture by Chelsea Jeeves (cc-by-sa)
Yucca brevifolia fruit picture by gideon van melle (cc-by-sa)

Distribution

Yucca brevifolia world distribution map, present in United States of America

Conservation status

Yucca brevifolia threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:270297-2
WFO ID wfo-0000752275
COL ID 5CT56
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Clistoyucca arborescens Clistoyucca brevifolia Yucca jaegeriana Sarcoyucca brevifolia Cleistoyucca arborescens Yucca arborescens Yucca brevifolia subsp. jaegeriana Yucca brevifolia subsp. herbertii Yucca brevifolia var. herbertii Yucca draconis var. arborescens Yucca brevifolia var. jaegeriana Yucca brevifolia f. herbertii Yucca brevifolia var. brevifolia Yucca brevifolia