• Photo of Crotalaria spectabilis (Crotalaria spectabiliss)

Plant Profile: Crotalaria spectabilis

Taxonomy: Crotalaria spectabilis

Names

Rattlebox, Showy Crotalaria

  • Photo of Crotalaria spectabilis (Crotalaria spectabiliss)

Phonetic Spelling:kroh-tuh-LAR-ee-uh speck-TAB-ih-liss

Genus:Crotalaria

Species:spectabilis

Family:Fabaceae

Crotalaria spectabilis, often referred to as Showy Crotalaria, belongs to the legume family, Fabaceae. This annual herbaceous plant typically flowers between August and November. Although it is not indigenous to the United States, it was brought to the southeastern region from tropical areas. Its range extends from Virginia down to Florida and westward to Texas. This species thrives in open fields and along roadsides, favoring sandy soils and full sunlight.

You can often spot it growing along roadsides and in cultivated fields, where it may become invasive in disturbed environments.

Crotalaria spectabilis Feature Summary

Crotalaria spectabilis Image Gallery

Tags

#poisonous
#wildflower garden

Similar Plants

Crotalaria spectabilis Feature Summary

Attributes
Indian Subcontinent to Taiwan
Flowers
Elongated racemes, bract at the base.
Gold/Yellow
Leaves
2-6" leaves are widest at the apex and taper to the base. Hairy on the underside. Short petioles.
3-6 inches
Stem
Stems are green or purplish and become waxy with age.
Purple/Lavender
Green
Poisonous to Humans
Lower blood pressure and heartbeat, stomach irritation
Seeds
Leaves
Whole Plant Traits
Poisonous
Wildflower

Crotalaria spectabilis Attributes

Crotalaria spectabilis: Country Or Region Of Origin

Indian Subcontinent to Taiwan

Crotalaria spectabilis: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Crotalaria spectabilis Flowers

Crotalaria spectabilis: Flower Description

Elongated racemes, bract at the base.

Crotalaria spectabilis: Flower Color

filter_vintage
Gold/Yellow

Crotalaria spectabilis: Flower Inflorescence

Catkin
Corymb
Cyme
Head
Insignificant
Panicle
Raceme
Solitary
Spadix
Spike
Umbel

Crotalaria spectabilis: Flower Bloom Time

Winter
Spring
Summer
Fall

Crotalaria spectabilis Leaves

Crotalaria spectabilis: Leaf Description

2-6" leaves are widest at the apex and taper to the base. Hairy on the underside. Short petioles.

Crotalaria spectabilis: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Crotalaria spectabilis: Hairs Present

No
Yes

Crotalaria spectabilis: Leaf Length

< 1 inch
1-3 inches
3-6 inches
> 6 inches

Crotalaria spectabilis Stem

Crotalaria spectabilis: Stem Description

Stems are green or purplish and become waxy with age.

Crotalaria spectabilis: Stem Color

grass
Green
grass
Purple/Lavender

Crotalaria spectabilis: Stem Is Aromatic

No
Yes

Crotalaria spectabilis Poisonous to Humans

Crotalaria spectabilis: Poison Symptoms

Lower blood pressure and heartbeat, stomach irritation

Crotalaria spectabilis: Poison Toxic Principle

Alkaloids

Crotalaria spectabilis: Poison Severity

High
Low
Medium

Crotalaria spectabilis: Causes Contact Dermatitis

No
Yes

Crotalaria spectabilis: Poison Part

Bark
Flowers
Fruits
Leaves
Roots
Sap/Juice
Seeds
Stems

Crotalaria spectabilis Whole Plant Traits

Crotalaria spectabilis: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower