It is a robust perennial herb producing a branching, tangled gray stem to about a meter in height. The many sprawling stems are foliated in linear leaves up to about 10 centimeters long which may have several fingerlike lobes. The plant produces thick racemes of many small flowers. Each flower has spoon-shaped white petals just a few millimeters long. The fruit is a mostly flattened oblong to rounded capsule under a centimeter long.
Plant Data
Names and Taxonomy
Common Names: Desert Pepperweed, Desert Alysum, Desert Peppergrass, Bush Pepperwort
Synonyms: Lepidium fremontii
Family: Brassicaceae (Mustard)
Genus Information: 13 species in NV and NM, 18 UT, 22 CA, 12 TX, 42 in US
Habit and Size
Duration: perennial
Habit: shrub
Shape: upright
Size: 3 feet (1 m)
Stem: smooth and green
Leaves
Color: green
Shape: linear
Edge: smooth
Arrangement:
Leaf Retention:
Flowers and Fruit
Sex: monoecious
Flower Color: white
Flower Size: 1/4 inch
Number of Petals:
Bloom: Mar, Apr, May, Jun
Fruit: oblong capsule, silicle
Habitat and Growing Conditions
Water Use:
Light:
Soil:
Habitat: sandy desert flats and the rocky slopes of nearby hills and mountains
Distribution
Distribution: AZ, CA, NV, UT
Seen: Corn Creek
Elevation:
Photographs
Desert Pepperweed (Lepidium fremontii)
Flowers, Corn Creek
Desert Pepperweed (Lepidium fremontii)
Fruit, Corn Creek
Desert Pepperweed (Lepidium fremontii)
Fruit, Corn Creek
Desert Pepperweed (Lepidium fremontii)
Fruit, Corn Creek
Vocabulary Reference Material
Plants, leaf and flower anatomy is essential to properly classify
Sky Island vegetation biomes
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