Invasive Plants ( Present On Panorama Vista Preserve )

In its past history, some parts of the Preserve were farmland, one portion was a horse ranch, another a feedlot, and (still existing) much was oilfield. Alien or non-native plants which were introduced either accidentally (e.g. in cattle feed) or purposefully (e.g. as pasture) soon caught hold. Some plants, such as the very invasive Sahara mustard, tumbleweed, and foxtail grasses, thrive especially well on disturbed ground; native plants are overwhelmed and out-competed.

Asteraceae (Compositae) (Sunflower Family)

Brassicaceae (Cruciferae) (Mustard Family)

Comment: Highly invasive

Caryophyllaceae (Pink Family)

Chenopodiaceae (Goosefoot Family)

Comment: Highly invasive. One plant may set 1 million seeds which are easily dispersed when wind uproots the dried bush and blows it around.

Fabaceae (Leguminosae) (Pea Family)

Geraniaceae (Geranium Family)

Comment: Moderately invasive.

Geraniaceae (Geranium Family)

Comment: Traditionally used in folk medicine but has become a noxious weed throughout the world.

Malvaceae (Mallow Family)

Poaceae (Grass Family)

Comment: Highly invasive.

Pontederiaceae (Pickerel-weed Famiy)

Comment: Highly invasive

Simaroubaceae (Quassia/simarouba Family)

Comment: Twenty to sixty feet high; aggressive, difficult to eradicate. Said to have been introduced by Chinese gold miners in the 1850s.

Solanaceae (Nightshade Family)

Comment: Moderately invasive

Tamaricaceae (Tamarisk Family)

Comment: Not as aggressive as other Tamarisk species; was probably planted on the Preserve as a windbreak in its oilfield period.

Urticaceae (Nettle Family)