Learn More Details About This Plant

Plant Data

Names and Taxonomy

  • Common Names: “Five-horn Smotherweed, Five-hook Bassia, Thorn Orache”
  • Synonyms: “Salsola hyssopifolia, Kochia hyssopifolia”
  • Family: Amaranthaceae
  • Genus Information: AZ: 3, CA: 3, NV: 3, UT: 3, NM: 3

Habit and Size

  • Duration: Annual
  • Type: Weed
  • Habit: Erect
  • Shape: Rounded / Irregular
  • Size: 1–3 ft x 1–2 ft
  • Stem: Erect, highly branched, covered in fine woolly or long hairs; light green to yellowish-green, becoming purplish-red in autumn.

Leaves

  • Color: bright green, gray-green
  • Shape: Linear-lanceolate
  • Edge: Entire
  • Ligule-Petiole:
  • Arrangement: Alternate
  • Leaf Retention: Deciduous

Flowers and Fruit

  • Sex: Hermaphroditic
  • Flower Color: Inconspicuous green
  • Flower Size: 2 mm across
  • Number of Petals: 0 (flowers possess a 5-lobed calyx instead of true petals)
  • Bloom: July–October
  • Fruit: Utricle enclosed by a persistent calyx featuring 5 prominent hooked spines

Habitat and Growing Conditions

  • Water Use: Low
  • Light: Full Sun
  • Soil: Sandy / Rocky / Alkaline / Well-draining
  • Habitat: Disturbed areas, roadsides, ditches, alkaline flats, playas, creosote bush scrub

Distribution

  • Distribution: Widespread throughout Western North America, including California, Nevada, Arizona, Utah, and New Mexico; native to Eurasia.
  • Seen: Observed in alkaline washes and disturbed roadsides. Ash Meadows...Crystal Reservoir
  • Elevation: 330 ft (100 m) to 6,650 ft (2,026 m)

Gallery

Five-horn Smotherweed (Bassia hyssopifolia)

A hardy, woolly annual identifiable by its distinctively hooked five-horned fruit spikes thriving in alkaline soils. Ash Meadows, NV

Five-horn Smotherweed (Bassia hyssopifolia)

Ash Meadows, NV

Five-horn Smotherweed (Bassia hyssopifolia)

Ash Meadows, NV

Five-horn Smotherweed (Bassia hyssopifolia)

Ash Meadows, NV