Heterophyllaea

{{Short description|Genus of plants}}

{{refimprove|type =plant|date=December 2009}}

{{Automatic taxobox

|image = Bouvardia.jpg

|image_caption = Heterophyllaea pustulata: illustrations F-G

|display_parents = 2

|taxon = Heterophyllaea

|authority = Hook.f.

|subdivision_ranks = species

|subdivision = See text.

}}

Heterophyllaea is a genus of two species of shrubs in the family Rubiaceae, native to Bolivia and Argentina.

Heterophyllaea pustulata also known as cegadera contains an unknown toxin that causes photosensitization in sheep and cows.{{Cite news|url=https://medical-dictionary.thefreedictionary.com/Heterophyllaea+pustulata|title=Heterophyllaea pustulata|work=TheFreeDictionary.com|access-date=2018-07-17}} It can grow to between 2 and 3 meters in height and is typically found in northwest Argentina at an altitude between 2,500 and 3,000 meters above sea level.{{Cite journal|last1=C.|first1=Núñez Montoya, Susana|last2=Núñez|first2=Montoya, Susana C.|last3=R.|first3=Comini, Laura|last4=Rumie|first4=Vittar, Belén|last5=M.|first5=Fernández, Ivana|last6=A.|first6=Rivarola, Viviana|last7=L.|first7=Cabrera, José|title=Phototoxic effects of Heterophyllaea pustulata (Rubiaceae)|url=https://www.academia.edu/4509247|journal=Toxicon|language=en|volume=51|issue=8|issn=0041-0101|pmid=18513778|doi=10.1016/j.toxicon.2008.03.011|year=2008|pages=1409–15|bibcode=2008Txcn...51.1409N }}

;Species

• Heterophyllaea lycioides (Rusby) Sandwith
• Heterophyllaea pustulata Hook.f.