buffalobur
(Solanum rostratum)
Overview
- Appearance
- Solanum rostratum is an annual herbaceous plant that can grow up to 2 ft. (0.6 m) tall.
- Foliage
- Stems and leaves have extremely sharp spines, so take care when handling. Leaves are alternate, bright green, petiolate, 4-5 in. (10.2-12.7 cm) long, and pinnately lobed.
- Flowers
- Flowers have five petals and are yellow, and 1 in. (2.5 cm) across. Calyx tube is 1 in. (2.5 cm) long, and spiny. Flowering occurs from May to October.
- Fruit
- Fruits are dry berries up to 0.4 in. (1 cm) in diameter covered in sharp spines and contain several wrinkled, flat, black seeds.
- Ecological Threat
- S. rostratum prefers moist soils and areas like pastures, waste ground, and roadsides. Although it is native to most of North America, it is considered a noxious weed in some states.
Selected Images
Maps
EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State List - This map identifies those states that list this species on their invasive species list or law. For more information, visit Invasive.org
Invasive Listing Sources
Taxonomic Rank
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Magnoliopsida |
| Subclass: Asteridae |
| Order: Solanales |
| Family: Solanaceae |
| Genus: Solanum |
| Subject: Solanum rostratum Dunal |
Other System Links
Plants: SORO
Bayer: SOLCU
GRIN: 101426
ITIS: 30454
NPDN Pest: PEWAIBF
NPDN Host: 36476
Synonyms and Other Names
Other Common Names:
buffalobur nightshade, buffalobur, Colorado bur, horned nightshade, Kansas thistle, Mexican thistle, Texas thistle
References
Common Name Reference: Weed Science Society of America Common Names List
Scientific Name Reference: PLANTS Database