Rogier de Kok

The genus Vitex (Labiatae) in the Flora Malesiana region, excluding New Guinea

SummaryA revision of the genus Vitex is presented for the Flora Malesiana region excluding New Guinea. A key to all 16 species and two subspecies for the Flora Malesiana is provided. Descriptions are given of species, notes on ecology, distribution, local uses, vernacular names and conservation status are given for all species from the Flora Malesiana region which were not included in the species treatment for New Guinea, and those that were included in the latter treatment are usually expanded. Vitex medusaecalyx H. J. Lam, V. siamica F. N. Williams and V. vestita Wall. ex Walp. are lectotypified in this paper and 18 names are placed into synonymy for the first time. Seven names are treated as doubtful names and 35 names are excluded from the present definition of the genus.

The genus Premna L. (Lamiaceae) in the Flora Malesiana area

SummaryA revision of the genus Premna is presented for the Flora Malesiana region. A key, descriptions, notes on ecology, distribution, local uses and names and conservation status are given for all 14 species occurring in the Flora Malesiana area. One new species, Premna clavata de Kok, is described. Four names are lectotypified, one neotypified and 71 names are placed into synonymy for the first time. Three names are treated as doubtful and four are excluded from the present definition of the genus.

A revision of the genus Gmelina (Lamiaceae)

SummaryA revision of the genus Gmelina L. (Lamiaceae) is presented with a summary of its taxonomic history, keys, full descriptions, distribution maps, conservation assessments, ecological information and ethno-botanical notes. For the New Caledonia species no descriptions and distribution maps are given as they have been provided in an earlier publication. In this treatment, 31 species are recognised, 18 names are placed into synonymy for the first time, five are lectotypified, one is neotypified (G. racemosa (Lour.) Merr.) and seven names are excluded from the genus. Two varieties (G. palawensis var. palawensis and G. palawensis var. celebica) are raised to subspecies level. Four new species are described: G. australis de Kok, G. basifilum de Kok, G. hollrungii de Kok and G. peltata de Kok.

Relationships of the endemic Australian genus Huxleya Ewart & Rees (Labiatae) based on of fruit and flavonoid characters

The mature fruits of Huxleya linifolia Ewart & Rees (Labiatae) and the flavonoid profile of the species are described for thefirst time. On the basis of this new information, it seems likely that thegenus Huxleya is more closely related toClerodendrum rather than to Oxeraand Faradaya as thought previously.

Identifying targets for plant conservation in Harapan Rainforest, Sumatra.

A short description of how the Harapan Rainforest may have been before logging is given, based upon interviews with the people who conducted surveys prior to timber extraction. This information is used to demonstrate similarity to the forests of the Pasir Mayang and Muara Bungo area, which have been more thoroughly surveyed. The former state is then contrasted with the current condition based upon botanical surveys undertaken in 2008, 2012 and 2013, highlighting both dominant and rare species as well as the need for more comprehensive information on the conservation status of the majority of species. Finally, a number of introduced weedy species are now present whose potential for continued population growth and potential to retard restoration is discussed.

A revision of Pultenaea (Fabaceae: Mirbelieae). 4. Species occurring in Western Australia

Twenty-five species of Pultenaea endemic to Western Australia are revised at and below species level. Three species (P. daena Orthia & Chappill, P. indira Orthia & Crisp, P. wudjariensis Orthia), three subspecies (P. calycina subsp. proxena Orthia & Chappill, P. indira subsp. monstrosita Orthia, P. indira subsp. pudoides Orthia) and two informal taxa [P. ericifolia ‘southern’ (Orthia 39), P. sp. Mt Lesueur (Beard 7827)] are described for the first time. The status of all varieties of P. verruculosa is changed: P. verruculosa var. brachyphylla (Turcz.) Benth. is reinstated at species level, P. verruculosa Turcz. var. verruculosa and P. verruculosa var. pilosa Benth. are placed in synonymy of Pultenaea verruculosa Turcz., and P. verruculosa var. recurva Benth. is found to be a nomen dubium. Three names in common usage are found to be illegitimate: P. conferta Benth. [now P. purpurea (Turcz.) Crisp & Orthia], P. obcordata (R.Br.) Benth. (now P. quaerita Orthia) and P. drummondii Meisn. (older name P. brachytropis Benth. reinstated). The Pultenaea species occurring in both western and eastern Australia are discussed and addenda made to the treatments previously published by de Kok and West (2003, 2004). The status of P. vestita R.Br. and P. juniperina Labill. as naturally occurring WA species is questioned.

Lespedeza cambodianum (Leguminosae), a new species from Cambodia

SummaryA new species of Lespedeza Michx. (Leguminosae) from Cambodia is described for the first time. This is the first record of the genus for the country.