A revision of Ziziphus (Rhamnaceae) in Borneo

The genus Ziziphus (Rhamnaceae) is revised for Borneo. 13 species are recognised using morphological evidence, including three new endemic species: Ziziphus cuspidata, Z. domatiata and Z. puberula. Borneo is therefore the island with the greatest known diversity of Ziziphus species. The area surrounding Mount Kinabalu is particularly diverse, with nine species occurring in Ranau. Two new varieties of Z. borneensis are also described here, Z. borneensis var. ranggam and Z. borneensis var. velutina, five new synonyms are established, including the placement of Z. elmeri as a synonym of Colubrina beccariana. A taxonomic treatment, including a preliminary IUCN conservation status assessment, is presented for each species and variety

Ardisia recurvipetala (Primulaceae-Myrsinoideae), a new species from northern Peninsular Malaysia

Recent fieldwork in Terengganu, Peninsular Malaysia, resulted in the collection of an endemic new species of Ardisia, described here as Ardisia recurvipetala Julius, Siti-Munirah & Utteridge. The species is a member of subgenus (§) Crispardisia on account of its vascularised glands (bacterial nodules) on the leaf margin and the terminal inflorescence on a specialised lateral branch subtended by a normal leaf (rather than a reduced bract-like leaf). Ardisia recurvipetala is unique amongst all members of §Crispardisia by having leaf margins with both vascularised glands and pustule-like structures and can be further distinguished from other Peninsular Malaysian members of this subgenus by the lamina raised between the leaf venation giving a somewhat bullate appearance, unbranched inflorescences, brownish-red pedicels and recurved corolla lobes, each with a creamy-white apex and a small pink patch at the base. Ardisia recurvipetala is known only from a single location in Terengganu and its conservation status is assessed as Data Deficient (DD)

Ardisia recurvipetala (Primulaceae-Myrsinoideae), a new species from northern Peninsular Malaysia

Recent fieldwork in Terengganu, Peninsular Malaysia, resulted in the collection of an endemic new species of Ardisia, described here as Ardisia recurvipetala Julius, Siti-Munirah & Utteridge. The species is a member of subgenus (§) Crispardisia on account of its vascularised glands (bacterial nodules) on the leaf margin and the terminal inflorescence on a specialised lateral branch subtended by a normal leaf (rather than a reduced bract-like leaf). Ardisia recurvipetala is unique amongst all members of §Crispardisia by having leaf margins with both vascularised glands and pustule-like structures and can be further distinguished from other Peninsular Malaysian members of this subgenus by the lamina raised between the leaf venation giving a somewhat bullate appearance, unbranched inflorescences, brownish-red pedicels and recurved corolla lobes, each with a creamy-white apex and a small pink patch at the base. Ardisia recurvipetala is known only from a single location in Terengganu and its conservation status is assessed as Data Deficient (DD)

Two new species of Pittosporum (Pittosporaceae) for the Flora of Thailand

Two new species of Pittosporum (Pittosporaceae) are reported for Thailand. Pittosporum lacrymasepalum from Trat Province and P. maxwellii from Doi Inthanon, Chiang Mai Province are described and illustrated

Nouvelles espèces et statut nouveau d’<i>Urophyllum</i> Wall. (Rubiaceae) du Cambodge et du Viêtnam

Cinq nouvelles espèces d’Urophyllum Wall. endémiques du Cambodge et du Viêtnam sont décrites et illustrées ici, et U. annamense (Pierre ex Pit.) Yooprasert, Culham &amp; Utteridge, stat. nov. est élevé au rang d’espèce. Les nouvelles espèces sont uniques en raison de la combinaison morphologique de l’indumentum, de la nervation secondaire, de la forme de la stipule et de la structure de l’inflorescence, ainsi : U. bidoupense Yooprasert, Culham &amp; Utteridge, sp. nov. : plante presque glabre, nervures secondaires faiblement brochidodromes, stipule glabre, oblongue-lancéolée ; U. chinense subsp. latistipulum Yooprasert, Culham, Yahara &amp; Utteridge, subsp. nov. : apparence similaire à l’U. bidoupense mais diffère par une stipule ovale à elliptique, velue le long de la ligne médiane ; U. brochidodromum Yooprasert, Culham &amp; Utteridge, sp. nov. : tige et branches velues, surface adaxiale des feuilles velue sur la nervure médiane et les nervures secondaires, nervures secondaires ostensiblement brochidodromes, stipule velue, lancéolée ; U. pulchristipulum Yooprasert, Culham &amp; Utteridge, sp. nov. : plante glabre, nervures secondaires ostensiblement brochidodromes, stipule glabre et subcordée, inflorescence sessile ; U. pseudoschmidtii Yooprasert, Culham, Yahara, Tagane &amp; Utteridge, sp. nov. : tige et branches velues à subglabres, veines secondaires festonnées-brochidodromes, stipule peu ou densément velue, linéaire-lancéolée à oblongue-lancéolée, fleur pistillée sans staminodes. Une clé d’identification des espèces d’Urophyllum du Cambodge, du Laos et du Viêtnam est fournie. Des cartes d’occurrence ponctuelle sont présentées pour chaque espèce, ainsi que des évaluations provisoires de conservation basées sur les directives de l’UICN. Dataset GBIF   Carte de distributionFive new species of Urophyllum Wall. endemic to Cambodia and Viêtnam are herein described and illustrated, and U. annamense (Pierre ex Pit.) Yooprasert, Culham &amp; Utteridge, stat. nov. is raised to species status. The new species are unique due to the morphological combination of indumentum, secondary venation, stipule shape and inflorescence structure as follows: U. bidoupense Yooprasert, Culham &amp; Utteridge, sp. nov.: plant almost glabrous, secondary veins weakly brochidodromous, stipule glabrous, oblong-lanceolate; U. chinense subsp. latistipulum Yooprasert, Culham, Yahara &amp; Utteridge, subsp. nov.: similar appearance to the U. bidoupense but differs with stipule ovate to elliptic, hairy along the midline; U. brochidodromum Yooprasert, Culham &amp; Utteridge, sp. nov.: stem and branches hairy, adaxial leaf surface hairy on midrib and secondary veins, secondary veins conspicuously brochidodromous, stipule hairy, lanceolate; U. pulchristipulum Yooprasert, Culham &amp; Utteridge, sp. nov.: plant glabrous, secondary veins festooned brochidodromous, stipule glabrous and subcordate, inflorescence sessile; U. pseudoschmidtii Yooprasert, Culham, Yahara, Tagane &amp; Utteridge, sp. nov.: stem and branches hairy to subglabrous, secondary veins festooned brochidodromous, stipule sparsely to densely hairy, linear-lanceolate to oblong-lanceolate, pistillate flower with no staminodes. An identification key to Urophyllum species of Cambodia, Laos and Viêtnam is provided. Point occurrence maps are presented for each species, as well as provisional conservation assessments based on IUCN guidelines. GBIF dataset   Distribution map</a

Out of New Guinea? Two new species of Zygogynum (Winteraceae) extend the genus west of Lydekker’s and Wallace’s Lines.

The Winteraceae comprise 100 – 130 species in five to nine genera. The genus is currently thought to have a Papuasian-Pacific distribution and is only known from the western Pacific islands (New Caledonia, Vanuatu and the Solomon Islands), Australia and New Guinea, including the far western Bird’s Head Peninsula, but is not yet recorded from islands to the west of the Sahul Plate and the biogeographic boundary of Lydekker’s Line. Here, two new species of are described from west of both Wallace’s and Lydekker’s Lines. is described from the Moluccan islands of Indonesia, and , a new species and generic record for the Sunda shelf, is described from the northern part of the Malaysian State of Sarawak in Borneo. In addition to descriptions and illustrations of the new species, the generic delimitation, fossil record and potential dispersal agents of are discussed

Three new species of Erycibe (Convolvulaceae) from Malesia.

As part of a comprehensive review of the genus Erycibe (Convolvulaceae) in South-East Asia, three new species are described and illustrated: E. sangiheensis Kochaiph. &amp; Utteridge sp. nov. from Sangihe Island, North Sulawesi Province in Indonesia and two from Borneo (E. trichocarpa Kochaiph. &amp; Utteridge sp. nov. and E. brunneopilosa Kochaiph. &amp; Utteridge sp. nov.). A distribution map, line drawings and preliminary IUCN conservation assessments are provided for all three species