Pacific Island Ecosystems at Risk (PIER)

  [   PIER species lists  ]   [   PIER home  ]

Lepidium oblongum
Small, Brassicaceae
Click on an image for links to BIGGER PICTURES


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: veiny pepperweed

Habit:  herb

Description:  "Annual or biennial herbs; stems prostrate to ascending, 1-2 (-3) dm long, usually branched from near base, sparsely short-hirsute (hairs slender) or glabrous.  Basal leaves 1-5 cm long, 1-2 times pinnately dissected, the lobes 0.6-3 mm wide; cauline leaves few, pinnately lobed, the segments obtuse to subacute.  Flowers in elongate racemes 2-10 cm long, only slightly narrowed toward apex; sepals usually magenta, ca. 0.8 mm long, often persistent in fruit, margins white; petals linear, less than 0.5 mm long, or absent; stamens 2.  Silicles broadly elliptic to obovate or suborbicular, 2.5-3.5 mm long, the apical notch broad, prominent, the margins clearly exceeding the style.  Seeds ca. 1.5 mm long"  (Wagner et al., 1999; pp. 407-409).

Habitat/ecology:  In Hawai‘i, "naturalized in dry, disturbed sites, 0-200 m"  (Wagner et al., 1999; pp. 407-409).

Propagation:  Seed

Native range:  "Southwestern United States south to Guatemala"  (Wagner et al., 1999; pp. 407-409).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
State of Hawaii
Hawaiian Islands
Kaho‘olawe Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 409)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Lorence, David H./Flynn, Timothy W./Wagner, Warren L. (1995) (p. 26)
Voucher cited: T. Flynn et al. 2989 (BISH, PTBG)
"A common lawn weed".
State of Hawaii
Hawaiian Islands
Lāna‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 409)
Voucher cited: Munro 291 (BISH)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Starr, Forest/Starr, Kim/Loope, Lloyd L. (2006) (p. 33)
East Maui. Voucher cited: Starr,Starr, Medeiros & von Allmen 040128-2 (BISH)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 409)
State of Hawaii
Hawaiian Islands
Ni‘ihau Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 409)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Central America
Central America (Pacific rim)
El Salvador (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Central America
Central America (Pacific rim)
Guatemala (Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Mexico
Mexico
Mexico (United Mexican States) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (west coast)
United States (west coast states)
USA (Oregon) native
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (west coast)
United States (west coast states)
USA (California) native
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
Also reported from
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
United States (continental except west coast)
United States (other states)
United States (other states) native
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

  [   PIER species lists  ]   [   PIER home  ]

This page was created on 8 FEB 2010 and was last updated on 8 FEB 2010.