Nineteen new species of Bucephalandra Schott are described: B. akantha S. Y. Wong & P. C. Boyce, sp. nov., B. aurantiitheca S. Y. Wong & P. C. Boyce, sp. nov., B. belindae S. Y. Wong & P. C. Boyce, sp. nov., B. bogneri S. Y. Wong & P. C. Boyce, sp. nov., B. chimaera S. Y. Wong & P. C. Boyce, sp. nov., B. chrysokoupa S. Y. Wong & P. C. Boyce, sp. nov., B. diabolica S. Y. Wong & P. C. Boyce, sp. nov., B. forcipula S. Y. Wong & P. C. Boyce, sp. nov., B. goliath S. Y. Wong & P. C. Boyce, sp. nov., B. kerangas S. Y. Wong & P. C. Boyce, sp. nov., B. kishii S. Y. Wong & P. C. Boyce, sp. nov., B. minotaur S. Y. Wong & P. C. Boyce, sp. nov., B. oncophora S. Y. Wong & P. C. Boyce, sp. nov., B. pubes S. Y. Wong & P. C. Boyce, sp. nov., B. sordidula S. Y. Wong & P. C. Boyce, sp. nov., B. tetana S. Y. Wong & P. C. Boyce, sp. nov., B. ultramafica S. Y. Wong & P. C. Boyce, sp. nov., B. vespula S. Y. Wong & P. C. Boyce, sp. nov. and B. yengiae P. C. Boyce, sp. nov. Furthermore, three pre-existing species names are transferred from Microcasia Becc. to Bucephalandra: B. elliptica (Engl.) S. Y. Wong & P. C. Boyce, comb. nov. (≡ Microcasia elliptica Engl.), B. muluensis (M. Hotta) S. Y. Wong & P. C. Boyce, comb. nov. (≡ M. muluensis M. Hotta) and B. oblanceolata (M. Hotta) S. Y. Wong & P. C. Boyce, comb. nov. (≡ M. oblanceolata M. Hotta). Together these changes take Bucephalandra to 27 species. An updated generic description is provided, and a key to all species is offered. All species dealt with taxonomically and nomenclaturally are illustrated from living plants, and with comparative plates of the spadices. Where possible scientific names are correlated to nomenclature used by commercial suppliers. Remaining taxonomic problems are highlighted, and foci for further study suggested. Notes on the role of the motile interstice staminodes are supplied.

Anthurium jaimeanum Croat & C. E. Cerón and A. pahumense C. E. Cerón & Croat (Araceae) are described and illustrated. The two species are members of A. sect. Porphyrochitonium Schott from the W slopes of the Ecuadorian Andes in Pichincha Province. Anthurium jaimeanum occurs at 1800 m in a premontane rain forest life zone, whereas A. pahumense is found at 1800–2200 m in a lower montane wet forest life zone. The new species are unusual in A. sect. Porphyrochitonium, a group characterized by having short internodes and glandular punctate blades, in that they have unusually long internodes.

The epiphytic lichen flora of 37 stands of Platanus orientalis L. (plane) on the Greek mainland from Makedonia in the north to Peloponnisos in the south and in the W half of Kriti has been investigated. It is shown that a rich flora, including several members of the Collemataceae (12 taxa of Collema and 16 taxa of Leptogium), Gyalectaceae, Opegraphaceae and Pannariaceae, is more or less restricted to areas with high precipitation or sites with a humid mesoclimate, while under drier conditions P. orientalis supports mainly taxa of the families Lecanoraceae, Physciaceae and Teloschistaceae. However, elements of both species groups are present in most of the stands. Such a species combination may lend support to the S European Lobaria-Anaptychia nodum of the Lobarion proposed by Rose (1988). Riparian plane forests are discussed in relation to conservation of biodiversity. Among the 152 lichen taxa encountered, 13 taxa are new to Greece, viz.: Arthonia aff. stellaris, Bacidia absistens, Collema fragrans, C. ligerinum, Lecidella laureri, Lemmopsis cf. pelodes, Lepraria cf. imposibilis, Leptogium aragonii, L. microphylloides, L. pulvinatum var. quercicola, Opegrapha rufescens, Phaeophyscia chloantha and Rinodina anomala. A further ten taxa are new to the Greek mainland.

The taxa of Cotoneaster Medik. (Rosaceae) from NW Africa (Morocco, Algeria and Tunisia) have been revised. The taxonomic position of C. atlanticus G. Klotz is justified and the occurrence of C. granatensis Boiss. in Morocco is confirmed. Diagnostic characters, descriptions, detailed illustrations and distribution maps are given for both taxa. Morphological characteristics of C. atlanticus and C. granatensis are compared with the related C. nummularius Fisch. & C. A. Mey. and C. racemiflorus (Desf.) K. Koch.

A new species of Scaphochlamys Baker (Zingiberaceae), S. stenophylla I. H. Ooi & S. Y. Wong, from Bau, Kuching Division, Sarawak, Malaysian Borneo, is described and illustrated with observations on the phenology. An identification key to the species of Scaphochlamys in Borneo is provided.

A new rheophytic species of Schismatoglottis, S. persistens S. Y. Wong & P. C. Boyce is described from Sri Aman Division, Sarawak, Malaysian Borneo. It is remarkable in the genus by the combination of a creeping, rooting, rhizome-like stem and persistent ligules at the tip of the petiolar sheath.

Based on study of herbarium specimens of Cyperus sect. Incurvi Kük., three species are described from the lowlands of N South America and Mesoamerica: C. conservator-davidii G. C. Tucker is a new species occurring in several countries and is morphologically similar to C. simplex Kunth; C. lacustris Schrad. ex Nees is an overlooked species that has been confused with C. miliifolius Poepp. & Kunth; C. altsonii Kük. and C. hoppiifolius Uittien pertain to the same species, for which the former is the earlier name. An identification key is provided for all species of C. sect. Incurvi occurring in the New World.

Twenty-one lichen-forming and two lichenicolous fungi species are reported as new to Armenia. Four of these, Arthopyrenia cerasi, Chaenothecopsis treicheliana, Melaspilea ochrothalamia and Punctelia jeckeri, are new for the whole of SW Asia. One genus, Bacidina, is also new for Armenia. Short discussions are added for Anaptychia roemeri, Arthopyrenia cerasi, Bacidia polychroa, Caloplaca polycarpoides, Candelariella antennaria, C. lutella, Chaenothecopsis treicheliana, Cladonia rei, Lecanora impudens, Melaspilea ochrothalamia, Pertusaria constricta, Punctelia jeckeri and Stigmidium congestum. The lichenicolous fungus Chaenothecopsis treicheliana, earlier considered as a synonym of C. hospitans, is confirmed to be a separate species.

Fifteen species of Plinia have been previously recognized as occurring in Cuba, all of them endemic. Field and herbarium studies have resulted in their present reappraisal, based on morphological features. Two species, P. rubrinervis Urb. and P. rupestris Ekman & Urb., are transferred to Myrciaria as a single species, M. rupestris (Ekman & Urb.) Z. Acosta, comb. nov. One species, P. acunae Borhidi & O. Muñiz, is transferred to Eugenia as E. borhidiana Z. Acosta, nom. nov. One species is described as new: P. bissei Z. Acosta & Urquiola, sp. nov. Thus the number of Cuban species assigned to the genus Plinia is reduced to 13: five restricted to W Cuba, seven restricted to E Cuba, and one in both C and E Cuba. Morphological descriptions of the genus and its Cuban species, with a dichotomous identification key, are presented, together with data on phenology, distribution and ecology. The conservation status for each species (where data were available) has been assessed according to IUCN categories and criteria.

Two taxonomically novel species of Homalomena (Araceae: Homalomeneae), H. prolixa S. Y. Wong & P. C. Boyce and H. scutata S. Y. Wong & P. C. Boyce, both of doubtful taxonomic affinity, are described from SW Sarawak, and from Brunei and adjacent NE Sarawak, Borneo, respectively. Both occur as lithophytes on forested sandstone bluffs.

This is the third of a series of miscellaneous contributions, by various authors, where hitherto unpublished data relevant to both the Med-Checklist and the Euro Med (or Sisyphus) projects are presented. This instalment deals with the families Isoetaceae; Amaranthaceae, Callitrichaceae, Campanulaceae, Caryophyllaceae, Chenopodiaceae, Compositae, Crassulaceae, Cruciferae, Geraniaceae, Leguminosae, Onagraceae, Polygonaceae, Resedaceae, Rosaceae, Salicaceae, Scrophulariaceae s.l. (incl. Orobanchaceae p.p., Plantaginaceae p.p. and Veronicaceae), Tamaricaceae; Cyperaceae, Gramineae, Liliaceae s.l. (incl. Hyacinthaceae) and Orchidaceae. It includes new country and area records, taxonomic and distributional considerations for taxa in Alternanthera, Bellardia, Bromopsis, Callitriche, Cardamine, Carex, Cotula, Draba, Dysphania, Echinops, Epilobium, Epipactis, Genista, Geranium, Kickxia, Lathyrus, Legousia, Lupinus, Mcneillia, Noccaea, Oligomeris, Persicaria, Pilosella, Pyracantha, Pyrus, Salix, Scrophularia, Sedum, Sempervivum, Suaeda and Tamarix, and the validation of names in Bellardia, Campanula, Draba, Isoetes, Mcneillia, Noccaea, Ornithogalum, Persicaria, Pilosella and Sempervivum.

In this paper (see p. 125 in issue 44(1)), Table 5 was reproduced incorrectly. The correct version is as follows:

Table 5. Results of simple regressions for the dependent variable S with A, E, and Dm as independent variables. — Abbreviations are as in Table 1.