Article · Wikipedia archive · Last revised Jul 19, 2026

Chthamalia

Chthamalia is a genus of flowering plants in the dogbane family. The genus was first formally named in 1844. It contains approximately 21 species native to Mexico and the southern United States. Chthamalia is accepted as a genus by Plants of the World Online, but is considered by some others to be a synonym or a subgenus of Matelea.

Last revised
Jul 19, 2026
Read time
≈ 2 min
Length
395 w
Citations
6
Source
Wikipedia ↗
Chthamalia
Chthamalia ojadapantha in highland central Mexico
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Embryophytes
Clade: Tracheophytes
Clade: Spermatophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Subfamily: Asclepiadoideae
Tribe: Asclepiadeae
Subtribe: Gonolobinae
Genus: Chthamalia
Decne.
Species1

21; see text

Chthamalia is a genus of flowering plants in the dogbane family (Apocynaceae: Gonolobinae). The genus was first formally named in 1844.2 It contains approximately 211 species native to Mexico and the southern United States. Chthamalia is accepted as a genus by Plants of the World Online,13 but is considered by some others to be a synonym or a subgenus of Matelea.4

21 SPECIES accepted by Plants of the World Online as of May 17, 2025:

  • Chthamalia atrostellata Morillo | USA (Texas) & Mexico (Coahuila)
  • Chthamalia biflora Decne. | USA (Oklahoma & south-central states)
  • Chthamalia brevicoronata (B.L.Rob.) Morillo | USA (southern Texas)
  • Chthamalia camporum (Brandegee) Morillo | Mexico (Coahuila)
  • Chthamalia castanea (Brandegee) Morillo | Mexico (Puebla, Oaxaca)
  • Chthamalia chihuahuensis (A.Gray) Morillo | USA (SW New Mexico) & northern Mexico
  • Chthamalia cynanchoides (Engelm. & A.Gray) Morillo | USA (Central Oklahoma to SE Texas and W Louisiana
  • Chthamalia decumbens (W.D.Stevens) L.O.Alvarado & E.B.Cortez | Mexico (Durango to México State)
  • Chthamalia lesueurii (Standl.) Morillo | Mexico (Sonora, Chihuahua)
  • Chthamalia nummularia Decne. | Mexico
  • Chthamalia ojadapantha (L.O.Alvarado, S.Islas & M.G.Chávez) S.Islas & M.G.Chávez | Mexico (Querétaro to Oaxaca)
  • Chthamalia parviflora (Torr.) L.O.Alvarado & E.B.Cortez | USA (Central & S Texas) and NE Mexico
  • Chthamalia pedunculata Decne. | Mexico
  • Chthamalia producta (Torr.) L.O.Alvarado & E.B.Cortez | USA (Arizona & Texas) and northern Mexico
  • Chthamalia prostrata (Cav.) L.O.Alvarado & Cortez | Mexico (NE & central states)
  • Chthamalia pubiflora Decne. | USA (SE Georgia & Florida)
  • Chthamalia radiata (Correll) Morillo | USA (S Texas)
  • Chthamalia schaffneri (A.Gray ex Hemsl.) L.O.Alvarado & M.G.Chávez | Mexico (NE states into Veracruz)
  • Chthamalia tehuacana Castañeda-Zárate, M.G.Chávez & L.O.Alvarado | Mexico (Puebla)
  • Chthamalia texensis (Correll) Morillo | USA (SW Texas)
  • Chthamalia wootonii (Vail) Morillo | Mexico (Sonora, Chihuahua)
References

References

  1. Chthamalia Decne. Plants of the World Online.
  2. "IPNI Plant Name Details". www.ipni.org. Retrieved 2018-03-18.
  3. McDonnell, Angela Jean; Fishbein, Mark (2017-06-27). Phylogenomics and evolution of New World milkweed vines (Gonolobinae) and resurrection of Chthamalia: a genome skimming and targeted enrichment approach. Botany 2017. Fort Worth, TX.
  4. Woodson, Robert E. (1941). "The North American Asclepiadaceae. I. Perspective of the Genera". Annals of the Missouri Botanical Garden. 28 (2): 193–244. doi:10.2307/2394270. JSTOR 2394270.