MISCELLANEOUS SOUTH EAST ASIAN CUCURBIT NEWS

DE WILDE, W.J.J.O. & DUYFES, B.E.E. 2008. Miscellaneous South East Asian cucurbit news. Reinwardtia 12(4):267 – 274. –– This paper contains corrections, additions, and name changes in several genera, which became apparent since previous publications by the authors in these genera.(1) Baijiania A.M. Lu & J.Q. Li: a range-extension(2) Benincasa Savi: a name change(3) Diplocyclos (Endl.) T. Post & Kuntze: lectotypification of the synonym Ilocania pedata Merr.(4) Gymnopetalum Arn.: a name change, designation of two neotypes, a new record(5) Hodgsonia Hook. f. & Thomson: a new subspecies(6) Indomelothria W.J. de Wilde & Duyfjes: the largest fruits(7) Trichosanthes L.: three new varieties, a name change, amendments of fruit descriptionss, and a range-extension(8) Zehneria Endl.: a new species from Mindanao

ANANGIA, A NEW MONOTYPIC GENUS OF CUCURBITACEAE FROM EAST MOLUCCAS

 DE WILDE, W.J.J.O; DUYFEES, B.E.E. & VAN DER HAM, R.W.J.M. 2006. Anangia, a new monotypic genus of Cucurbitaceae from East Moluccas. Reinwardtia 12(3): 219 – 222.– A new monotypic genus of Cucurbitaceae from Morotai (Indonesia) is described. The genus is defined by unique characters, including large sepals, much longer than the petals, and it has distinctly cucurbitoid pollen features. The only species is Anangia macrosepala W.J. de Wilde & Duyfjes

Clés pour et liste des espèces du genre <i>Trichosanthes</i> L. (Cucurbitaceae) en Indo-Chine.

Dans cette mise au point, 20 espèces du genre Trichosanthes L. sont reconnues en Thaïlande, ainsi qu’au Cambodge, au Laos et au Vietnam. Depuis les traitements floristiques correspondants dans Flora of Thailand (De Wilde & Duyfjes 2008a ; 17 espèces), et dans Flore du Cambodge, du Laos et du Viêtnam (Keraudren-Aymonin 1975 ; 10 espèces), la connaissance du genre s’est étendue, grâce aux études de terrain en Thaïlande. Pour cette dernière, on doit signaler la présence des taxons T. baviensis Gagnep., T. pedata Merr. & Chun, et T. tricuspidata Lour. subsp. rotundata W.J.de Wilde & Duyfjes. Quant au Cambodge, au Laos et au Vietnam, les espèces suivantes sont reconnues : T. dunniana H.Lév., T. erosa Duyfjes & Pruesapan var. erosa, T. inthanonensis Duyfjes & Pruesapan, T. fissibracteata C.Y.Cheng & C.H.Yueh, T. tricuspidata Lour. subsp. rotundata W.J.de Wilde & Duyfjes, et T. truncata C.B.Clarke. Deux clés sont présentées, l’une pour les individus mâles et l’autre pour les spécimens en fruits. Pour chaque espèce sont mentionnées les références bibliographiques, la distribution et d’autres remarques éventuelles.In this account the genus Trichosanthes L. has 20 species occurring in Thailand, Cambodia, Laos and Vietnam. Since the treatments in Flore du Cambodge, du Laos et du Viêtnam (Keraudren-Aymonin 1975; 10 species), and in Flora of Thailand (De Wilde & Duyfjes 2008a; 17 species) more knowledge by fieldwork in Thailand has become available resulting in the inclusion for Thailand of the taxa T. baviensis Gagnep., T. pedata Merr. & Chun, T. tricuspidata Lour. subsp. rotundata W.J.de Wilde & Duyfjes. For Cambodia, Laos and Vietnam of the species T. dunniana H.Lév., T. erosa Duyfjes & Pruesapan var. erosa, T. inthanonensis Duyfjes & Pruesapan, T. fissibracteata C.Y.Cheng & C.H.Yueh, T. tricuspidata Lour. subsp. rotundata W.J.de Wilde & Duyfjes, and T. truncata C.B.Clarke. Two keys to the species are presented, one for male flowering specimens, and one for fruiting specimens, as well as for each species literature references, distribution and occasional other information

Étude de <i>Lagerstroemia</i> L. (Lythraceae) en Indochine (à l’exception de la Thaïlande) et description d’une nouvelle espèce du Vietnam, <i>Lagerstroemia densiflora</i>, sp. nov.

Dans cette mise au point, 21 espèces du genre Lagerstroemia L. (Lythraceae) sont reconnues en Indochine (Cambodge, Laos et Vietnam). Six espèces, à savoir Lagerstroemia densiflora W.J.de Wilde &amp; Duyfjes, sp. nov., L. gagnepainii Furtado &amp; Srisuko, L. kratiensis W.J.de Wilde &amp; Duyfjes, L. micrantha Merr., L. lecomtei Gagnep. et L. petiolaris Pierre ex Laness. sont endémiques d’Indochine. Lagerstroemia densiflora W.J.de Wilde &amp; Duyfjes, sp. nov., de Vietnam, est nouvelle pour la science, celle-ci ressemble à L. duperreana Pierre ex Gagnep., mais en diffère par son inflorescence compacte et multiflore, son tube calicinal lisse et non côtelé, son pseudopédicelle de 3-4 mm de long à l’anthèse, et de 4-5 mm de long en fruit, sa capsule à surface lisse et glabre. Pour chaque espèce sont mentionnés les références bibliographiques, ainsi que la typification, quelques caractères typiques, et la distribution. Deux clés sont présentées, l’une pour les spécimens en fleurs et l’autre pour les spécimens en fruits.Lagerstroemia L. (Lythraceae) in Indochina (Cambodia, Laos, and Vietnam) comprises 21 species. Six species, namely Lagerstroemia densiflora W.J.de Wilde &amp; Duyfjes, sp. nov., L. gagnepainii Furtado &amp; Srisuko, L. kratiensis W.J.de Wilde &amp; Duyfjes, L. micrantha Merr., L. lecomtei Gagnep., L. petiolaris Pierre ex Laness., only occur in Indochine. Lagerstroemia densiflora W.J.de Wilde &amp; Duyfjes, sp. nov., from Vietnam, is new to science; it differs from the most similar Lagerstroemia duperreana Pierre ex Gagnep. by a compact and densely flowered inflorescence, the calyx tube smooth and unridged, the pseudopedicel at anthesis 3-4 mm long, in fruit 4-5 mm long, and the glabrous capsules with a smooth surface. For each species the original reference, typification, spot- characters and distribution are presented. There are two keys to the species, one for flowering and one for fruiting material.</p

Les espèces sauvages de &lt;i&gt;Cucumis&lt;/i&gt; L. (Cucurbitaceae) en Asie du Sud-Est.

Deux espèces sauvages de Cucumis se trouvent dans le sud-est de l’Asie, dont C. debilis W.J.de Wilde &amp; Duyfjes, endémique du Vietnam, est nouvelle. La seconde espèce, C. hystrix Chakrav., est largement distribuée, mais assez rare. Ces deux espèces sont décrites et illustrées. De plus, le genre est représenté par deux espèces cultivées bien connues : C. melo L. (le melon) et C. sativus L. (le concombre), qui sont toutes les deux représentées par une variété sauvage. Cucumis debilis est caractérisée par un habitus délicat, des pédicelles mâles et femelles longs, respectivement (15-)20 et c. 35 mm, et des ovaires glabres et presque lisses.In SE Asia two wild species of Cucumis L. occur, of which C. debilis W.J.de Wilde &amp; Duyfjes, endemic to Vietnam, is new. The second species, C. hystrix Chakrav., is widely distributed but not common. Both species are described and illustrated. The genus is furthermore represented by the two well-known cultivated species C. melo L. (the melon) and C. sativus L. (the cucumber); both represented with a wild variety in the area. Cucumis debilis is characterized by a delicate habit, long male and female pedicels, respectively (15-)20 and c. 35 mm long, and by a glabrous, almost smooth ovary

Miscellaneous South East Asian cucurbit news

DE WILDE, W.J.J.O. &amp; DUYFES, B.E.E. 2008. Miscellaneous South East Asian cucurbit news. Reinwardtia 12(4):267 – 274. –– This paper contains corrections, additions, and name changes in several genera, which became apparentsince previous publications by the authors in these genera.(1) Baijiania A.M. Lu &amp; J.Q. Li: a range-extension(2) Benincasa Savi: a name change(3) Diplocyclos (Endl.) T. Post &amp; Kuntze: lectotypification of the synonym Ilocania pedata Merr.(4) Gymnopetalum Arn.: a name change, designation of two neotypes, a new record(5) Hodgsonia Hook. f. &amp; Thomson: a new subspecies(6) Indomelothria W.J. de Wilde &amp; Duyfjes: the largest fruits(7) Trichosanthes L.: three new varieties, a name change, amendments of fruit descriptionss, and a range-extension(8) Zehneria Endl.: a new species from Mindanao

Kedrostis Medik. in Asia

DE WILDE, W.J.J.O.  &amp; DUYFJES, BRIGITTA E.E. 2004. Kedrostis Medik. in Asia. Reinwardtia 12(2):129 – 133. — Kedrostis (Cucurbitaceae) occurs in Africa and Madagascar and comprises 4 (5) species in Asia. Of these 2 species are found in India and Sri Lanka and 2 (3) species in western Malesia. One Malesian species is for the first time included in Kedrostis here, Kedrostis bennettii (Miq.) W.J. de Wilde &amp; Duyfjes, and one species is described as new here, Kedrostis hirta W.J. de Wilde &amp; Duyfjes. One more Malesian species is insufficiently known to be formally described.  Keywords: Kedrostis, Cucurbitaceae, SE Asia, taxonomy</p

New Guinea has the world’s richest island flora

New Guinea is the world's largest tropical island and has fascinated naturalists for centuries1,2. Home to some of the best-preserved ecosystems on the planet3 and to intact ecological gradients-from mangroves to tropical alpine grasslands-that are unmatched in the Asia-Pacific region4,5, it is a globally recognized centre of biological and cultural diversity6,7. So far, however, there has been no attempt to critically catalogue the entire vascular plant diversity of New Guinea. Here we present the first, to our knowledge, expert-verified checklist of the vascular plants of mainland New Guinea and surrounding islands. Our publicly available checklist includes 13,634 species (68% endemic), 1,742 genera and 264 families-suggesting that New Guinea is the most floristically diverse island in the world. Expert knowledge is essential for building checklists in the digital era: reliance on online taxonomic resources alone would have inflated species counts by 22%. Species discovery shows no sign of levelling off, and we discuss steps to accelerate botanical research in the 'Last Unknown

New Guinea has the world’s richest island flora

New Guinea is the world’s largest tropical island and has fascinated naturalists for centuries1,2. Home to some of the best-preserved ecosystems on the planet3 and to intact ecological gradients—from mangroves to tropical alpine grasslands—that are unmatched in the Asia-Pacific region4,5, it is a globally recognized centre of biological and cultural diversity6,7. So far, however, there has been no attempt to critically catalogue the entire vascular plant diversity of New Guinea. Here we present the first, to our knowledge, expert-verified checklist of the vascular plants of mainland New Guinea and surrounding islands. Our publicly available checklist includes 13,634 species (68% endemic), 1,742 genera and 264 families—suggesting that New Guinea is the most floristically diverse island in the world. Expert knowledge is essential for building checklists in the digital era: reliance on online taxonomic resources alone would have inflated species counts by 22%. Species discovery shows no sign of levelling off, and we discuss steps to accelerate botanical research in the ‘Last Unknown’8