Mustard (10)

Flowers in the Mustard family have regular flowers with four petals. They usually grow in clusters of tiny flowers. Many are considered weeds. There are many more members of this family, some not so weedy are Alpine Smelowskia, Brookcress, Drummond's Rockcress and Watercress.

Noccaea fendleri

Mountain Candytuft
Noccaea fendleri (Thlaspi montanum, N. montana)

Family: Mustard (Brassicaceae)
AKA: Wild Candytuft, Fendler's Pennycress
Photo taken on: May 4, 2007
Location: Almont Triangle, GV, CO
Life Zones: Foothills to alpine
Habitat: Open woods, meadows

Grows to 10" in colonies but will bloom when only an inch tall. Leaves clasp the stems. One of the earliest blooming plants.

Flora of North America reference.

Dimorphocarpa wislizenii

Spectacle Pod
Dimorphocarpa wislizeni

Family: Mustard (Brassicaceae)
AKA: Tourist Plant
Photo taken on: July 27, 2012
Location: Abiquiu, NM
Life Zones: Plains and foothills
Habitat: Dry sandy areas, roadsides

Grows to 2ft weedy-looking, with hairy, gray green stems and leaves.  Easily identified by the spectacle-shaped seed pods.

Dimorphocarpa wislizenii

Flora of North America reference.

Lobularia maritima

Sweet Alyssum
Lobularia maritima

Family: Mustard (Brassicaceae)
AKA:
Photo taken on: August 15, 2009
Location: Almont, CO
Life Zones: Plains and foothills
Habitat: Disturbed areas, vacant lots

An escapee from cultivation. Grows to 8" with spreading flower stalks and grayish, hairy leaves. Flowers are tiny and grow in dense clusters.

Flora of North America reference.

Thlaspi arvense

Pennycress
Thlaspi arvense

Family: Mustard (Brassicaceae)
AKA: Field Pennycress
Photo taken on: May 31, 2005
Location: Almont, CO
Life Zones: Plains to montane
Habitat: Disturbed soil

The rounded shape of the fruit distinguishes this from Shepherd's Purse which has similar tiny, white flowers.

Flora of North America reference.

Capsella bursa-pastoris

Shepherds Purse
Capsella bursa-pastoris

Family: Mustard (Brassicaceae)
AKA:
Photo taken on: July 4, 2005
Location: Crested Butte South, CO
Life Zones: Foothills to montane
Habitat: Disturbed soil

The triangular shape of the fruit distinguishes this from the similar Pennycress.

Flora of North America reference.

Lepidium montanum

Western Peppergrass
Lepidium montanum

Family: Mustard (Brassicaceae)
AKA: Mountain Pepperweed
Photo taken on: May 6, 2010
Location: Black Canyon NP, CO
Life Zones: Foothills to montane
Habitat: Sandy, gravelly, disturbed soil, roadsides

Grows to 20". In the spring it is bright green with lobed basal leaves and narrow stem leaves. Flowers are tiny and fragrant. By late summer it has an open, shrubby appearance, top heavy with flowers. The stems become woody and the basal leaves shriveled.

Flora of North America reference.

The plants below key out to Lepidium montanum but are quite distinctive, in shape, time of flowering and habitat. The Flora of North America says "There is little agreement among North American authors as to the characters emphasized, the number of infraspecific taxa, their ranks, and their synonymies in treatments of Lepidium montanum." so who am I to try?

Lepidium montanum

Western Peppergrass
Lepidium montanum

Family: Mustard (Brassicaceae)
AKA: Mountain Pepperweed
Photo taken on: July 30, 2014
Location: Rio Chama, Abiquiu, NM
Life Zones: Foothills
Habitat: Sandy soil

Growing about 2ft tall. Upper stem leaves entire, lower stem leaves divided.

Lepidium montanum

Western Peppergrass
Lepidium montanum

Family: Mustard (Brassicaceae)
AKA: Mountain Pepperweed
Photo taken on: August 4, 2014
Location: Plaza Blanca, Abiquiu, NM
Life Zones: Foothills
Habitat: Sandy soil

Stems about 2ft long. Stem leaves divided.

Lepidium montanum

Western Peppergrass
Lepidium montanum

Family: Mustard (Brassicaceae)
AKA: Mountain Pepperweed
Photo taken on: August 26, 2014
Location: SR 285 NM/CO State line
Life Zones: Foothills
Habitat: Disturbed soil, roadsides

Many plants growing in area, about 1ft tall.

Lepidium draba

Whitetop
Lepidium draba (Cardaria draba)

Family: Mustard (Brassicaceae)
AKA: Whiteweed, Hoary Cress
Photo taken on: May 20, 2009
Location: White Rock, NM
Life Zones: Plains to foothills
Habitat: Disturbed soil

Grows to 2ft in clumps with stout stems. Leaves are grayish-green and clasp the stems. Tiny white flowers grow in flat-topped clusters. It is very invasive.

NOXIOUS

Flora of North America reference.

Lepidium alyssoides

Mesa Pepperwort
Lepidium alyssoides

Family: Mustard (Brassicaceae)
AKA: Southern Pepperweed
Photo taken on: August 4, 2014
Location: Plaza Blanca, Abiquiu, NM
Life Zones: Plains to foothills
Habitat: Dry areas, washes, canyons

Grows to 20" with a few branched stems from the base. Basal leaves may be in a rosette and are divided. Stem leaves are narrow with smooth edges. Flower clusters are at the end of the branches.

Flora of North America reference.

Lepidium latifolium

Broadleaved Pepperweed
Lepidium latifolium (Cardaria latifolia)

Family: Mustard (Brassicaceae)
AKA: Tall Whitetop, Perennial Peppergrass, Tall Pepperweed,
 Giant Whiteweed

Photo taken on: July 1, 2014
Location: El Rito, NM
Life Zones: Plains to foothills
Habitat: Disturbed areas, wet areas, roadsides, pastures

Grows 3-5ft tall with oval-shaped waxy leaves on the stems and long strap-like basal leaves. Tiny flowers grow in dense clusters. It is very invasive.

NOXIOUS

Flora of North America reference.

Thelypodiopsis purpusii

Purpus' Tumblemustard
Thelypodiopsis purpusii

Family: Mustard (Brassicaceae)
AKA:
Photo taken on: May 7, 2014
Location: Plaza Blanca, Abiquiu, NM
Life Zones: Plains to foothills
Habitat: Juniper openings, barren areas

Grows about 2ft tall with a single stem that branches and deeply lobed basal leaves. The stem leaves clasp the stem. Tiny flowers produce narrow seedpods up to 2 ½" long.

     

Flora of North America reference.

White/Cream Round Clusters