Biotropica botanists recently discovered a weed previously unknown in the Asia Pacific. Ludwigia leptocarpa (Anglestem willow primrose) was previously known only in its native North America, and in Africa where it is a well-established weed. Biotropica botanist Nigel Tucker has now recorded the weed in Papua New Guinea’s Southern Highlands and Western Provinces. Specimens have been lodged at herbaria in Lae, Queensland and Missouri. The specimen was identified by Dr Peter Raven from the Missouri Botanical Gardens, who is the world authority on the Ludwigia genus.
In 2008, Biotropica botanists discovered Stevia ovata (Candy leaf), a new weed record for Australia, and in the same year found only the second record for Blainvillea gayana in Australia. Our commitment to best-practice weed management is well known, and getting the taxonomy right is clearly the first step in best-practice.