Sideroxylon lanuginosum

Sideroxylon lanuginosum[4] is a shrub or small tree of the family Sapotaceae. It is considered endangered in much of its native range.[5] It is native to the Sun Belt and Midwest of the United States[6] as well as Northeastern Mexico.[2] Common names include gum bully,[6] black haw, chittamwood, chittimwood, shittamwood, false buckthorn, gum bumelia, gum elastic, gum woolybucket, woolybucket bumelia, wooly buckthorn, wooly bumelia, ironwood and coma.

Gum bully
Gum-Bumelia (2945882076).gif

Apparently Secure (NatureServe)[1]
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Ericales
Family: Sapotaceae
Genus: Sideroxylon
S. lanuginosum
Binomial name
Sideroxylon lanuginosum
  • S. l. subsp. lanuginosum
  • S. l. subsp. oblongifolium
  • S. l. subsp. rigidum
Sideroxylon lanuginosum range map 2.png
Natural range

The fruit of Bumelia lanuginosa is edible but can cause stomach aches or dizziness if eaten in large quantities.[7] The Kiowa and Comanche tribes both consumed them when ripened.[8] Gum from the trunk of the tree is sometimes chewed by children.[7]


  • Sideroxylon lanuginosum subsp. lanuginosum (syn. Bumelia lanuginosa, Bumelia rufa)[9][10]
  • Sideroxylon lanuginosum subsp. oblongifolium (Nutt.) T.D.Penn. (syn. Sideroxylon lanuginosum ssp. albicans)
  • Sideroxylon lanuginosum subsp. rigidum (A.Gray) T.D.Penn.[3]


  1. ^ "NatureServe Explorer 2.0 - Sideroxylon lanuginosum, Gum Bumelia". Retrieved 6 May 2020.
  2. ^ a b "Sideroxylon lanuginosum". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 2011-10-06.
  3. ^ a b "Sideroxylon lanuginosum". Integrated Taxonomic Information System. Retrieved 2011-10-06.
  4. ^ "Help for the Home Gardener". Retrieved 27 March 2022.
  5. ^ Paul T. Corogin. "The Buckthorns (Genus Sideroxylon): An Underappreciated Group of Florida Native Plants" (PDF). Retrieved 27 March 2022.
  6. ^ a b USDA, NRCS (n.d.). "Sideroxylon lanuginosum". The PLANTS Database ( Greensboro, North Carolina: National Plant Data Team. Retrieved 14 November 2015.
  7. ^ a b Little, Elbert L. (1980). The Audubon Society Field Guide to North American Trees: Eastern Region. New York: Knopf. p. 631. ISBN 0-394-50760-6.
  8. ^ Peattie, Donald Culross (1953). A Natural History of Western Trees. New York: Bonanza Books. p. 678.
  9. ^ Sideroxylon lanuginosum Michx. ssp. lanuginosum at Oklahoma Biological Survey
  10. ^ Bumelia lanuginosa at University of Florida

External linksEdit

  Media related to Sideroxylon lanuginosum at Wikimedia Commons   Data related to Sideroxylon lanuginosum at Wikispecies