, Harvard University Herbaria (retired), 22 Divinity Avenue, Cambridge, MA 02138, USA

• Phytotaxa Vol. 52 No. 1 (2012) - Article
  

  Additions to the flora of the southern mountains of Papua New Guinea: Begonia chambersiae sp. nov. (Begoniaceae), Kibara renneriae sp. nov. (Monimiaceae), and distributional records of four rarely seen taxa

  
  Abstract
• Phytotaxa Vol. 56 No. 1 (2012) - Article
  

  Floristic discoveries from the LNG Pipeline in Papua New Guinea: Macaranga esseriana sp. nov. (Euphorbiaceae), and noteworthy records for twelve taxa from the southern provinces

  
  Abstract
• Phytotaxa Vol. 60 No. 1 (2012) - Article
  

  Modern sequels to the Kaiserin-Augusta-Fluss itinerary of Carl Ledermann: floristic discoveries from the upper Sepik of Papua New Guinea

  
  Abstract