Petalostigma

Taxobox
name = "Petalostigma"

---

regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Malpighiales
familia = Picrodendraceae
tribus = Caletieae
subtribus = Petalostigmatinae
genus = "Petalostigma"
genus_authority = F.Muell.
subdivision_ranks = Species
subdivision =
*"Petalostigma banksii"
*"Petalostigma nummularium"
*"Petalostigma pachyphyllum"
*"Petalostigma pubescens" - quinine berry, quinine bush, quinine tree
*"Petalostigma quadriloculare"et al.
synonyms ="Xylococcus"

"Petalostigma" is a genus of plants under the family Picrodendraceae and the monogeneric subtribe Petalostigmatinae. It has 7 species found in New Guinea and Australia. In local medicine, pregnancy is said to be avoided by eating the fruit of the quinine bush ("Petalostigma pubescens"), which, as its name indicates, contains quinine.

This genus includes the former genus "Xylococcus" R.Br. ex Britten & S.Moore.

ee also

*"Cinchona" - another genus known for containing quinine
*Taxonomy of the Picrodendraceae