The species of Guarea F.Allam. ex L. (Meliaceae) are revised. Sixty-nine species are recognised, a key to the species is provided, all names are typified and descriptions of all species are given. A phylogenetic analysis based on ITS sequence data is discussed. Six new species and one new subspecies are described. Five new combinations for subspecies are made.

New combinations are proposed in Phanera (Leguminosae: Caesalpinioideae) for two varieties of Bauhinia glabrifolia (Benth.) Baker.

Two new species of Convolvulus (Convolvulaceae), C. excelsus R.R.Mill and C. infantispinosus R.R.Mill, are described from Saudi Arabia. Convolvulus excelsus, an exceptionally tall species, has affinities with C. erinaceus Ledeb. but is phytogeographically disjunct from that and other allied species. Two new subspecies are also described: Convolvulus hystrix Vahl subsp. dhofarica R.R.Mill, from Oman, and C. oxyphyllus Boiss. subsp. sheilae R.R.Mill, from Saudi Arabia. Each novelty is given a provisional IUCN conservation assessment.

Bulbophyllum nepalense Raskoti & Ale (Orchidaceae) from Nepal is described and illustrated. Notes on the diagnostic characters used to distinguish it from the similar species Bulbophyllum retusiusculum are provided.