@article {bunchalee_polyalthia_2019,
	title = {Polyalthia khaoyaiensis (Annonaceae), a new species from Thailand},
	journal = {Phytotaxa},
	volume = {405},
	number = {3},
	year = {2019},
	pages = {171{\textendash}179},
	abstract = {A new species, Polyalthia khaoyaiensis, is proposed based on materials from central Thailand. The species appears most similar to Polyalthia meghalayensis and Polyalthia evecta, differing from these taxa in having shorter pedicels and usually two (rather than one) ovules per carpel. From P. meghalayensis it differs further in absence of a claw from the inner petals. The new species is described and illustrated. The conservation status of the species is considered and it is given an assessment of Least Concern (LC), as it is locally common in the hill evergreen forest of Khao Yai National Park.},
	keywords = {IUCN Red List, Magnoliids, new species, POLYALTHIA},
	issn = {1179-3163},
	doi = {10.11646/phytotaxa.405.3.6},
	url = {https://www.biotaxa.org/Phytotaxa/article/view/phytotaxa.405.3.6},
	author = {Bunchalee, Pasakorn and Chantaranothai, Pranom and Johnson, David M. and Murray, Nancy A.}
}
@article {johnson_two_2019,
	title = {Two new species of Xylopia (Annonaceae) from peninsular Thailand},
	journal = {Thai Forest Bulletin (Botany)},
	volume = {47},
	number = {2},
	year = {2019},
	pages = {264{\textendash}269},
	abstract = {Two previously undescribed species of Xylopia are documented from southern Thailand. Xylopia niyomdhamii is known from a small peat swamp area in Narathiwat Province. Xylopia microcalyx is restricted to the limestone region extending from Chumphon south to Trang and Phatthalung Provinces, an area with many other endemic Annonaceae species. We found that X. malayana s.s., although previously reported, is not present in the Thai flora. A key to X. malayana s.s. and the Thai species of Xylopia is presented to summarize our taxonomic changes.},
	keywords = {Annonaceae, Magnoliales, South-East Asia, taxonomy, tree diversity},
	issn = {2465-423X},
	doi = {10.20531/tfb.2019.47.2.16},
	url = {https://www.tci-thaijo.org/index.php/ThaiForestBulletin/article/view/208671},
	author = {Johnson, David M. and Murray, Nancy A.}
}
@article {johnson_new_2017,
	title = {New species of Xylopia (Annonaceae) from East Africa},
	journal = {Kew Bulletin},
	volume = {72},
	number = {1},
	year = {2017},
	note = {00000},
	pages = {11},
	url = {http://link.springer.com/article/10.1007/s12225-017-9681-x},
	author = {Johnson, David M. and Luke, Quentin and Goyder, David J. and Murray, Nancy A.}
}
@article {johnson_revision_2018,
	title = {A revision of Xylopia L. (Annonaceae): the species of Tropical Africa},
	journal = {PhytoKeys},
	volume = {97},
	year = {2018},
	pages = {1{\textendash}252},
	abstract = {A revision of the 45 species of the pantropical genus Xylopia in Tropical Africa includes descriptions of six new species and a new section of the genus. The fruits and seeds of Xylopia show specializations that promote vertebrate dispersal, primarily by hornbills and monkeys. Over half of the African species have an Area of Occupancy (AOO) less than 80 km2, suggesting that they are in need of protection. African species are classified into five sections. Section Neoxylopia , with four species, is centered in the Guineo-Congolian Region and includes X. globosa sp. nov. Section Ancistropetala, with three species, occurs in the same region. Both of these sections are endemic to Africa. Section Xylopia, which extends to Madagascar and the American tropics, has only a single species in Africa, X. aethiopica. The three species of section Verdcourtia sect. nov. are restricted to the East African coast and Madagascar. The largest number of African species, (34) belong to section Stenoxylopia, in which the seeds lack the arils found in the other sections and instead have a fleshy sarcotesta. Section Stenoxylopia is divided into two informal groups, one centered in eastern and southern Africa (X. odoratissima group) and the other centered in the wetter forests of western and central Africa (X. acutiflora group). Five new species are described in section Stenoxylopia: Xylopia nilotica sp. nov. from Sudan, South Sudan, and Uganda, Xylopia calva sp. nov. from Nigeria and Cameroon, which is allied to X. phloiodora, and Xylopia monticola sp. nov. from Nigeria and Cameroon, X. piratae sp. nov. from Ivory Coast and Ghana, and X. unguiculata sp. nov. from Gabon. The latter three species are segregates of the former Xylopia acutiflora s. l. One new combination is made at the species level, X. shirensis comb. nov. Keys, descriptions, illustrations, distribution maps, and an index to numbered collections document diversity and assist with species identification. The name Unona oliveriana Baill. was found to pre-date the name Unona lepidota Oliv., requiring the combination Meiocarpidium oliverianum comb. nov.},
	issn = {1314-2003},
	doi = {10.3897/phytokeys.97.20975},
	url = {https://phytokeys.pensoft.net/articles.php?id=20975},
	author = {Johnson, David M. and Murray, Nancy A.}
}
