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 Leaves Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA) |  Plants Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA) | | | | |
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Origin:
Native
Life Cycle:
Biennial Similar Species: Arabis hirsuta
General Desc:
This is a tall, slim, gray-green plant with small creamy flowers at the top of each stem. Arabis glabra is a larval host and/or nectar source for the Large Marble butterfly (Euchloe ausonides).
Identification notes: Fruits are a silique (cylindrical pod); they are erect, numerous, smooth and cylindrical in shape. Petals are yellowish-white, rarely purplish. The hairs on the leaves are forked.
Height:
1 to 3 feet
Habitat Description: Habitats include various kinds of prairies, all soil types including limestone, rocky open woodlands, barren savannas, rocky bluffs, roadsides, abandoned fields, forest margins, stream banks and mountain slopes.
Plant Communities:
Desert Scrub, Interior Chaparral, Semidesert Grasslands, Pinyon Juniper Woodland, Montane Conifer Forest, Riparian, Disturbed Areas
Elevation: Below 9000 feet
Color:
White to cream, rarely purplish
Shape:
Regular in elongated clusters
Tubular:
N
Flowering Period:
Mar - May
Description:
The flower at the apex of each raceme is up to 1/6 inch across, consisting of 4 white or cream petals, 4 light green or yellow sepals, a stout style, and several stamens. One or more flowering stalks up to 3 feet tall appear in the second year.
Leaf Color:
Green to gray-green
Leaf Type:
Simple
Leaf Shape:
Round or oval
Leaf Margin:
Toothed
Leaf Attachment:
Basal and alternate
Leaves Clasp:
Y
Hairs:
Leaves
Spines:
N
Leaf Description:
Basal rosette leaves are 3-1/2 inches long and 3/4 inch across, oblong and often slightly pinnatifid; upper surface is often hairy. The stem leaves are narrower with bases that extend beyond their stem attachment, looking like a stretched arrowhead.
Fruit Color: Green to brownish-green
Fruit Type: Pod
Fruit Notes: Each flower is replaced by a slender cylindrical pod up to 2-1/2 inches long. The pods are held upright close to the stalk of the raceme. Each pod contains 1 or 2 rows of slightly flattened ovoid seeds.
Seed Notes: Small seeds have narrowly winged margins and are dispersed by the wind.
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