Carelessweed, Pigweed (Amaranthus spp.)

1
Carelessweed, Pigweed (Amaranthus spp.)

• Annual weedy herbs vary in growth forms from
  prostrate to branching upright. Toxic agent is
  nitrate.
• Animals with acute nitrate poisoning are often
  found dead with no previous history of illness.

2
Lechuguilla (Agave lechuguilla)

• Sheep and goats are poisoned most often under
  range conditions. Cattle are poisoned somewhat
  less frequently, although this plant can
  seriously threaten cattle during extended
  drought. Horses are not known to be poisoned.

3
Antelopehorn Milkweed (Asclepias asperula)

• An erect-stemmed plant growing to about 15 tall.
  Abundant in western Texas. Toxic agents involved
  are resinoids and glycosides. Poisons all
  livestock, especially sheep.

4
Broad-leafed Milkweed (Asclepias latifolia)

• Perennial, stout simple stems and four or more
  pairs of large thick leaves, flowers are greenish
  to white, giving rise to two to four smooth pods-
  July to October. Poisons cattle and goats, but
  more often sheep.