Mexican Palo Verde (Parkinsonia aculeata) -- with red stems Roadside, Menifee, CA 13 Nov 2010
Common Purslane (Portulaca oleracea), Homeland,21 Sep 2008
Castor oil plant (Ricinus communis). Santa Ana River floodplain, Colton, CA. 18 Jul 2008
Castor oil plant (Ricinus communis), inflorescence. Santa Ana River floodplain, Colton, CA. 18 Jul 2008
Giant reed (Arundo donax). Santa Ana River floodplain, Colton, CA. 18 Jul 2008.
Castor oil plant (Ricinus communis), dried fruit. Santa Ana River floodplain, Colton, CA. 18 Jul 2008
Castor oil plant (Ricinus communis), fruit. Santa Ana River floodplain, Colton, CA. 18 Jul 2008
Filaree (Erodium sp.), Homeland, 19 Jan 2008
Puncture Vine (Tribulus terrestris), Homeland, 15 Jun 2007
African Fountaingrass (Pennicetum cetaceum rubrum), Homeland, 24 Apr 2006
Shepherd's Purse (Capsella bursa-pastoris), Homeland, 19 Apr 2006
Unidentified brassica. Homeland, 24 Mar 2006
Common Purslane (Portulaca oleracea), Homeland, 20 Aug 2005
Prickly Lettuce (Lactuca serriola), Homeland, 18 Jun 2005
Common Groundsel (Senecio vulgaris), Homeland, 26 Feb 2005
unknown, Homeland, 26 Feb 2005
California bur-clover (Medicago polymorpha), Homeland, 26 Feb 2005
Pineapple Weed (Chamomilla suaveolens), Homeland, 26 Feb 2005
Ripgut Grass (Bromus dianthus), Homeland, 5 Feb 2005
Foxtail Chess or Red Brome Grass (Bromus madritensis rubens), Homeland, 4 Feb 2005
Mouse Barley (Hordeum murinum), Homeland, 4 Feb 2005
Red-stem Storksbill or Filaree (Erodium cicutarium), Homeland, 29 Jan 2005
London Rocket (Sisymbrium irio), Homeland, 19 Dec 2004
Tumbleweed (Salsola tragus), Homeland, 13 Nov 2004
Asiatic Dayflower (Commelina communis) - 10 Oct 2004
Bullthistle (Cirsium vulgare) - Murrieta, Calif., 22 Jun 2004
Dried phacelia. Lakeview Mountains, 14 Sep 2008.
Sweet Bush (Bebbia juncea) - Homeland, 15 Jun 2003
Tocalote or Maltese Star Thistle (Centaurea melitensis) - Homeland, 1 Jun 2003.
Tocalote or Maltese Star Thistle (Centaurea melitensis) - Homeland, 1 Jun 2003. One of California's most pernicious weeds, naturalized from So. Europe.
Dodder (Cuscuta californica) on Wild Buckwheat - Homeland, 1 Jun 2003. This plant, also known as "Witch's Hair," is a parasite on Chaparral plants. During the late Spring, it can form huge, tangled, orange mats on the vegetation along roadsides.
Cattle bush (Matricaria globifera or Oncosiphon piluliferum) - Homeland, 23 Apr 2003
Cattle bush (Matricaria globifera or Oncosiphon piluliferum) - Homeland, 23 Apr 2003 -- this species is native to South Africa, and has become naturalized in Southern California
