Van Den Boom, P. P. G., P. Clerc & D. Ertz (2015). New records of lichens and lichenicolous fungi from La Gomera (Canary Islands, Spain), including the new species: Usnea boomiana P. Clerc. Candollea 70: 165–177. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2015v702a1

Lichens and lichenicolous fungi are very diverse in the Canary Islands but the flora is still poorly known despite numerous recent publications. For this reason, two field trips were undertaken in 2011 in order to study the lichen flora of La Gomera (western Canary Islands). About 1000 specimens were collected in the different habitats of the island. In addition, c. 200 specimens collected in 1986, and c. 60 specimens from the Oslo herbarium (O) were studied. As a result, an annotated list of 107 newly recorded lichens and lichenicolous fungi from La Gomera is presented. Terricolous, saxicolous, as well as corticolous species are included. Further notes are given for 17 taxa that are new for the Canary Islands. Hypotrachyna meyeri (Zahlbr.) Streim. is new to Macaronesia. In addition, one species is newly described in the genus Usnea Dill. ex Adans., Usnea boomiana P. Clerc characterized notably by large and convex soralia and by the presence of caperatic acid in the medulla.

Callmander, M. W., A. P. Keim, S. Buerki & P. B. Phillipson (2015). The genus Pandanus Parkinson (Pandanaceae) on Halmahera Island (Moluccas, Indonesia) with descriptions of three new species and a key to the species on the island. Candollea 70: 179–195. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2015v702a2

Halmahera is the largest (c. 18,000 km²) island of the Moluccan archipelago, but naturalists have only sporadically visited Halmahera and it has remained very poorly explored botanically. However, an intensive botanical inventory project was undertaken between 2012 and 2014 in part of the island to inform flora biodiversity management for certain proposed mining activities. This effort has contributed over 3600 plant collections and nearly doubled the number of Pandanus Parkinson (Pandanaceae) specimens (bringing the total to 55) available for Halmahera. After careful examination of all available material and comparison with other material from the region, we are able to present the first overview of the genus for the island. We have identified ten species from the island of which three are new to science and not known elsewhere, while the other seven are all representatives of species already described from other localities. The new species are formally described here as Pandanus beguinii Callm. & A. P. Keim, Pandanus benstoneoides Callm., Buerki & Phillipson and Pandanus halmaherensis Callm. & A. P. Keim. The new species are provided with notes on their respective morphology and known distributional and ecological ranges, line drawings. Those three new species are assigned a preliminary status of Endangered following IUCN Red List Categories and Criteria. All ten species are illustrated with colour photographs and a key to the species is provided.

Caires, C. S. & C. E. B. Proença (2015). Typification of two Neotropical names of Loranthus Jacq. (Loranthaceae). Candollea 70: 197–199. In English, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2015v702a3

The original specimens of Loranthus cucullaris Lam. (≡ Psittacanthus cucullaris (Lam.) G. Don) (Loranthaceae), collected by Jean-Baptiste Leblond, were located in P and the former neotypification proposal for this name is thus rejected. The identity and typification of Loranthus bracteatus Rich, are discussed and this name is considered a nomenclatural synonym of Loranthus cucullaris. The holotype of Loranthus florulentus Rich. (≡ Oryctanthus florulentus (Rich.) Tiegh.), also collected by Leblond was found in G.

Wahlert, G. A., P. B. Phillipson & P. P. Lowry II (2015). A new species of Grewia L. (Malvaceae, Grewioideae) from northeastern Madagascar. Candollea 70: 201–205. In English, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2015v702a4

A new species of Grewia L. (Malvaceae, Grewioideae) from northeastern Madagascar is described and illustrated. This novelty most closely resembles Grewia thouvenotii Danguy from central-eastern Madagascar, but differs by a number of reproductive and vegetative characters. The new species belongs to the “Grewia cuneifolia group”, one of four informal species groups in Grewia sect. Grewia. In the 1970s René Capuron had been working towards a revision of Grewia and specimens annotated by him reveal that he considered the taxon described here to be new to science. While conducting an evaluation of the “Grewia cuneifolia group” from Madagascar, recent material was found that represents the same entity, making it now possible to provide a detailed description of this new species. We also provide a distribution map and preliminary conservation assessment of the new species using the IUCN Red List Categories and Criteria.

Ferrer-Gallego, P. P. (2015). Lectotypification of Papaver cambricum L. (Papaveraceae). Candollea 70: 207–210. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2015v702a5

The typification of the name Papaver cambricum L. (Papaveraceae) is discussed. This species was previously accepted in the genus Meconopsis Vig. as Meconopsis cambrica (L.) Vig. The protologue of the name and the original material are evaluated. A specimen from the Burser Herbarium (UPS-BURSER) is designated as the lectotype.

Wong, K. M. & M.H. Diep (2015). Bambusa gurgandii K. M. Wong & M. H. Diep (Poaceae, Bambusoideae), a new species of bamboo from Vietnam. Candollea 70: 211–218. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2015v702a6

Bambusa Schreb. (Poaceae, Bambusoideae) is a large and complex tropical and subtropical Asian genus that is currently being taxonomically remodeled through morphological and molecular phylogenetic approaches. The type and type alliance of the genus is, however, morphologically well distinguished. Preliminary documentation suggests there could be some 60–70 species of Bambusa in Vietnam, although confirmation requires more rigorous herbarium-based vouchering. A new species of bamboo belonging to the type alliance, Bambusa gurgandii K. M. Wong & M. H. Diep, is described, known only from cultivated specimens in Vietnam. It belongs to the group of unarmed Bambusa species including Bambusa burmanica Gamble, Bambusa farinacea K. M. Wong, Bambusa nutans Wall, ex Munro, Bambusa polymorpha Munro, Bambusa teres Buch.-Ham. ex Munro and Bambusa tulda Roxb. but is distinguished by details of the pseudospikelets and flowers.

Lachenaud, O. & L. Zemagho (2015). Two new anisophyllous species of Sabicea Aubl. (Rubiaceae) from Gabon. Candollea 70: 219–229. In English, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2015v702a7

Two new Rubiaceae species, Sabicea golgothae O. Lachenaud & Zemagho and Sabicea mabouniensis O. Lachenaud & Zemagho, are described and illustrated. These two species are very similar to each other, and differ from all their congeners by the combination of strong anisophylly and pedunculate inflorescences. Their position in the genus is discussed. Both species are apparently endemic to the Mabounié area in West-Central Gabon, currently under exploitation prospects for mining. They are both assessed as “Critically Endangered” according to IUCN Categories and Criteria.

Chautems, A., M. Peixoto & J. Rossini (2015). A new species of Sinningia Nees (Gesneriaceae) from Espírito Santo and Rio de Janeiro states, Brazil. Candollea 70: 231–235. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2015v702a8

A new species of Sinningia Nees (Gesneriaceae) occurring in Rio de Janeiro and southern Espírito Santo is described and illustrated. It is morphologically related to Sinningia aghensis Chautems, through its large purple funnel-shaped corollas, but differs by the presence of 4–6 leaf pairs with much longer internodes, tomentose indument on stem and abaxial face of leaf blades, leaf blades wide ovate, peduncle pubescent and larger corolla. Geographic ranges of the two species do not overlap. Comments on phylogenetic relationships within subtribe Ligeriinae, a distribution map and a preliminary conservation assessment following IUCN Red List are also provided.

Jacquemoud, F. D. Jordan (2015). Typification of Androsace pubescens DC. (Primulaceae). Candollea 70: 237–239. In French, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2015v702a9

The name Androsace pubescens DC. (Primulaceae) is typified by designating a neotype in the “Prodromus” herbarium (G-DC). In order to follow as close as possible the original description and the protologue, the selected specimen comes from a limestone range near to the locus classicus and holds white flowers and an indumentum with simple hairs.

Lachenaud, 0.8c B. Sonké (2015). The genus Oxyanthus DC. (Rubiaceae) in West Africa: description of a new species. Candollea 70: 241–247. In French, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2015v702a10

A new species, Oxyanthus andjigae Sonké & O. Lachenaud (Rubiaceae), from Ivory Coast and Sierra Leone, is described and illustrated. It is closely related to Oxyanthus racemosus (Schumach. & Thonn.) Keay and Oxyanthus setosus Keay, and was previously confused with the latter species; however, it differs from both in the longer corolla tube (18–19.5 cm vs (7-)11-15.5 cm) and the longer hairs on the twigs (1.5–2 mm long vs. ≤ 1 mm in Oxyanthus setosus and ≤ 0.5 mm in Oxyanthus racemosus). From Oxyanthus setosus it is also separated by the distribution, the latter species occuring from Nigeria to Gabon. The species is assessed as “Endangered” following IUCN Categories and Criteria. A new identification key to West African species of Oxyanthus DC. is presented; Oxyanthus oliganthus K. Schum. is newly reported from Côte d'Ivoire and Ghana.

Jongkind, C. C. H. (2015). Tragia liberica Jongkind (Euphorbiaceae), a new forest species from Liberia. Candollea 70: 249–252. In English, English abstract. DOI: http://dx.doi.org/10.15553/c2015v702a11

A new forest species from Liberia, Tragia liberica Jongkind (Euphorbiaceae), is described and illustrated here. It is a small climber resembling Tragia preussii Pax from Nigeria and Cameroon but differing by its leaf blade base and by the shape of the calyx of the female flower. It is the only Tragia L. species known from the wet evergreen forest in Liberia.

Callmander, M. W. & P. B. Phillipson (2015). The transfer of the Malagasy species of Strobilanthes Blume to Acanthopale C. B. Clarke (Acanthaceae). Candollea 70: 253–256. In English, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2015v702a12

Five Acanthaceae species originally described in the genus Strobilanthes Blume are formally transferred to the genus Acanthopale C. B. Clarke, following currently accepted generic delimitation in the family. The necessary combinations: Acanthopale breviceps (Benoist) Callm. & Phillipson, Acanthopale cuneifolia (Benoist) Callm. & Phillipson, Acanthopale humblotii (Benoist) Callm. & Phillipson, Acanthopale perrieri (Benoist) Callm. & Phillipson and Acanthopale ramiflora (Benoist) Callm. & Phillipson are established.

Phillipson, P. B. & M. W. Callmander (2015). Notes on the Rhodocolea racemosa (Lam.) H. Perrier (Bignoniaceae) species complex. Candollea 70: 257–265. In English, English and French abstracts. DOI: http://dx.doi.org/10.15553/c2015v702a13

The authors review the Rhodocolea racemosa (Lam.) H. Perrier complex (Bignoniaceae), with its numerous varieties and taxonomic forms, many of which were never validly published due to lack of Latin diagnoses, and its confused synonymy. The authors discuss the typification of the validly published taxa included within the species by Perrier de la Bâthie and recognise three of these as species distinct from Rhodocolea racemosa s.s., providing the necessary new combinations. Information on the identity of the taxa that lack validly published names is also provided.

Allorge, L., P. B. Phillipson & R. Razakamalala (2015). Catharanthus makayensis L. Allorge, Phillipson & Razakamal. (Apocynaceae), a new species from Madagascar. Candollea 70: 61–66. DOI: http://dx.doi.org/10.15553/c2015v701a7

In this paper, on p. 63 under Fig. 2, the photos C and D were taken by Mr Florian Beaucourt (Institut de Recherche Pierre Fabre, Toulouse, France) in a greenhouse. The authors thank the Institut Pierre Fabre for the cultivation of the plant.

DOI: http://dx.doi.org/10.15553/c2015v702a15