Puneet Varma (Editor)

Xanthisma gracile

Updated on
Edit
Like
Comment
Share on FacebookTweet on TwitterShare on LinkedInShare on Reddit
Kingdom
  
Genus
  
Higher classification
  
Daisy family

Order
  
Scientific name
  
Machaeranthera gracilis

Rank
  
Species

Xanthisma gracile rockymountainsfloracomdetailsYellow20SimpleSl

Similar
  
Xanthisma, Daisy family, Haplopappus, Chaetopappa ericoides, Erigeron divergens

Xanthisma gracile is a species of annual flowering plant in the Aster or Sunflower Family (Asteraceae) known by the common names slender goldenweed and annual bristleweed.

Contents

Xanthisma gracile Vascular Plants of the Gila Wilderness Xanthisma gracile

Range and habitat

It is native the southwestern United States and northern Mexico, where it grows in the deserts and plateaus.

Growth pattern

It is a bristly annual herb growing erect up to 45 centimeters tall.

Leaves and stems

Xanthisma gracile Slender Goldenweed Xanthisma Gracile

The oval or oblong leaves are 1 to 3 centimeters long and divided into lobes or teeth tipped with bristles.

Flowers and fruit

Xanthisma gracile Vascular Plants of the Gila Wilderness Xanthisma gracile

The inflorescence bears one or more flower heads lined with pointed, roughly hairy phyllaries. The head has a center of many yellow disc florets and a fringe of 16 to 18 yellow ray florets roughly a centimeter long. The fruit is a woolly achene 2 to 3 millimeters long tipped with a pappus.

Genetics

Xanthisma gracile SEINet Arizona Chapter Xanthisma gracile

Xanthisma gracile has extra chromosomes that do not have any functional genes (B chromosomes), and about which little is known.

Xanthisma gracile SEINet Arizona Chapter Xanthisma gracile

References

Xanthisma gracile Wikipedia