A new species of Miliusa (Annonaceae) from Andaman Islands, India

A new species Miliusa jainii (Annonaceae) from South Andamans, India, is described and illustrated.     

中国野独活属(番荔枝科)一新种——版纳野独活

描述了番荔枝科一新种——版纳野独活Miliusa bannaensis X. L. Hou,并绘了形态图。本种以其较大(长2 cm,直径达2.5 cm)的花近于大果野独活M. macrocarpa Hook. f. &; Thoms.,但以其较短(长10 mm)的花梗、较小(直径8-9 mm)的小果和卵状长圆形或倒卵状长圆形的叶易于区别。本种也以其较大(长14-22 (-26) cm, 宽6.5-10 cm)的叶相似于绒毛野独活M. velutina (Dunal.) Hook. f. &; Thoms.,但     

Constituents from Miliusa balansae (Annonaceae)

The styryl derivatives 3,4-dimethoxy-6-styryl-pyran-2-one and (2E,5E)-2-methoxy-4-oxo-6-phenyl-hexa-2,5-dienoic acid methyl ester were isolated from leaves and branches of Miliusa balansae (Annonaceae). In addition, the geranylated homogentisic acid derivative miliusate, four flavanones and two dihydrochalcones were identified. Their structures were elucidated by spectroscopic means.     

Miliusa bannaensis,a new species of the Annonaceae from China

Miliusa bannaensis X. L. Hou, a new species of the Annonaceae from Xishuangbanna, Yunnan Province, China, is described and illustrated. It is related to M. macrocarpa Hook. f. & Thoms. by its larger flowers 2 cm long and 2.5 cm in diam., but differs in it     

Mitrephora sirikitiae (Annonaceae): a remarkable new species endemic to northern Thailand

A new species of Annonaceae, Mitrephora sirikitiae , is described from Mae Hong Son Province in northern Thailand. It is easily distinguished from the seven species of Mitrephora previously recorded from Thailand due to its very large, showy flowers. It is most similar to M. winitii , but differs in its larger flowers, with inner petals that become undulate at maturity. The profuse blooming of the new species and its large flowers with mild fragrance suggest that may be of significant horticultural potential.     

A synopsis of Goniothalamus species (Annonaceae) in Thailand, with descriptions of three new species

A comprehensive taxonomic revision of Goniothalamus species (Annonaceae) occurring in Thailand is presented for the first time. Twenty-five species are recognized, including three that are described as new to science ( Goniothalamus aurantiacus from South-Western Thailand, Goniothalamus maewongensis from Northern Thailand, and Goniothalamus rongklanus from Northern and North-Eastern Thailand). Several taxonomic and nomenclatural misunderstandings are corrected. The name G. griffithii is shown to be widely misapplied for populations in Northern Thailand, for which the name G. calvicarpus should be applied; 'true' G. griffithii is restricted to South-Western Thailand and Myanmar. In addition, the widely used name G. marcanii is shown to be a synonym of G. tamirensis , and the name G. latestigma , previously regarded as a synonym of G. undulatus , is reinstated. Goniothalamus cheliensis is furthermore newly recorded from Thailand. Most species are restricted to Peninsular Thailand and represent a Malesian floristic component.  © 2008 The Linnean Society of London, Botanical Journal of the Linnean Society , 2008, 156 , 355–384.     

Dasymaschalon tibetense (Annonaceae): a new species from China

A new species, Dasymaschalon tibetense, has been described from South Tibet, China. The species is related to D. rostratum, but can be easily distinguished by its rounded apex of fruitlets and its 7.7–9.5 cm long petals.     

A new species of Polyalthia (Annonaceae) from Meghalaya, India

A new species, Polyalthia meghalayensis (Annonaceae) is described with illustrations from the Garo Hills of Meghalaya, India.     

Three new species of Mitrephora (Annonaceae) from Sabah, Malaysia

Three new species of Mitrephora (Blume) Hook. f. & Thomson, M. clemensiorum, M. vittata and M. woodii , are described from Sabah, Malaysia. Mitrephora clemensiorum is related to M. korthalsiana Miq., but is distinguished by having long inflorescences, long flowering and fruiting pedicels, and fruits with sessile monocarps. Mitrephora vittata is related to M. reflexa Merr., but has lanceolate, subcoriaceous leaves, and densely pubescent inflorescence rachides, flowering pedicels and bracts. Mitrephora woodii is similar to M. heyneana (Hook. f. & Thomson) Thwaites, but has smaller flowers and fruits with sessile monocarps     

A new species of Annona (Annonaceae) from the northeastern Guayana Shield

Annona prevostiae, a new species from the northeastern margin of the Guayana Shield, is described and illustrated.     

Studies on pollen morphology of selected species of Annonaceae from Thailand

The pollen morphology of 49 species and one variety, representing 18 genera of the family Annonaceae from Thailand, is described and illustrated based on observations using scanning electron microscopy (SEM). The pollen grains of Anaxagorea show double-spheres as a result of the intine extrusion. The palynological evidence confirms the close relationship of Dasymaschalon, Desmos and Asian Friesodielsia. Decussate tetrads in Goniothalamus and coexisting tetragonal, rhomboidal, T-shaped, tetrahedral and decussate tetrads in Mitrephora are reported. Pollen morphology is consistent within Huberantha, Marsypopetalum and Monoon, but is more diverse in Polyalthia sensu stricto Pollen unit, shape, size, ornamentation and aperture number reaffirm the great diversity among and within genera in Annonaceae.     

A new species of Aristolochia (Aristolochiaceae) from Thailand

Aristolochia dinghoui is described from southwestern Thailand. It is morphologically similar toA. harmandiana Pierre ex Lecomte, from Cambodia and Laos, and also bears some resemblance toA. philippinensis Warb. andA. sericea Blanco, both from the Philippines. A key to these four species is included, and some of their diagnostic features are listed.

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Resumen   Aristolochia dinghoui est décrite à partir de spécimens recueillis dans le sud-buest de la Thailande. Morphologiquement pareille à l'A. harmandiana Pierre ex Lecomte de l'Indochine, elle présente également des ressemblances avecA. philippinensis Warb. etA. sericea Blanco, des iles Philippines. Une clé est proposée pour distinguer ces quatre espèces. Les caractères diagnostiques de l'{btA. dinghoui} sont illustrés.

     

A new species of Scaphoclamys (Zingiberaceae) from Thailand

Scaphloclamys obcordata is described from the Naratiwat province in South Thailand. Its relationship with 5. klossii is discussed.     

Two new species of Aristolochia (Aristolochiaceae) from Thailand

Aristolochia baenzigeri and A. longeracemosa , both from Northern Thailand, are described as new species and illustrated.     

Four new species of Madhuca (Sapotaceae) from Thailand

Four new species of Madhuca from Thailand, M. chai-ananii, M. chiangmaiensis, M. klackenbergii and M. smitinandii , are described and illustrated. A key to the species is presented.     

Two new species of Scaphochlamys (Zingiberaceae) from Thailand

Scaphochlamys minutiflora and S. rubescens are described and illustrated. A key to the species of Scaphochlamys occurring in Thailand is provided.     

Three new species of Hiptage (Malpighiaceae) from Thailand

Three new species, Hiptage calcicola, H. gracilis , and H. monopteryx are described. A key to the species of Hiptage found in Thailand is provided.