天目山单爪螯蜂属二新种（膜翅目：螯蜂科：单爪螯蜂亚科）

本文记述采自浙江天目山的单爪螯蜂属Ａｎｔｅｏｎ２新种,即皱单爪螯蜂Ａｎｔｅｏｎ ｒｕｇｏｓｕｍ,ｓｐ．ｎｏｖ．和侧突单爪螯蜂Ａｎｔｅｏｎ ｓｔｙｌｕｎ,ｓｐ．ｎｏｖ．。模式标本保存于浙江农业大学。     

单爪螯蜂属四新种（膜翅目：螯蜂科）

报道中国单爪螯蜂属Ａｎｔｅｏｎ Ｊｕｒｉｎｅ４新种,即平头单爪螯蜂Ａ．ｐｌａｎｕｍ,ｓｐ．ｎｏｖ．;横单爪螯蜂Ａ．ｔｒａｎｓｖｅｒｕｍ,ｓｐ．ｎｏｖ,齿单爪螯蜂Ａ．ｓｅｒｒａｔｕｍ,ｓｐ,ｎｏｖ．和凸单爪螯蜂Ａ．ｃｏｎｖｅｘｕｍ,ｓｐ,ｎｏｖ．模式标本保存于浙江大学。     

单爪螯蜂属二新种：膜翅目：螯蜂科;单爪螯蜂亚科

本文记述单爪螯蜂属二新种;梳垫单瓜螯蜂Ａｎｔｅｏｎ ｐｅｃｔｉｎａｒｏｌｉｕｍ,ｓｐ．ｎｏｖ。和滑盾单爪螯蜂Ａｎｔｅｏｎ ｂｌａｎｄｕｓｃｕｔｕｍ,ｓｐ．ｎｏｖ。新种的模式标本保存在浙江农业大学植物保护系。     

单爪螯蜂属一新种描述：膜翅目：螯蜂科

本文记述了单爪螯蜂属１新种：临安单爪螯蜂Ａｎｔｅｏｎｌｉｎａｎｅｎｓｅｓｐ．ｎｏｖ．,模式标本藏浙江农业大学。     

单爪螯蜂属一新种记述（膜翅目：螯蜂科）

本报道了采自浙江省西天目山的单爪螯蜂属一新种。摸式标本存放浙江农业大学植物保护系。     

梵净山常足螯蜂属三新种（膜翅目：螯蜂科：常足螯蜂亚科）

本文记述常足螯蜂属３新种：白脸常足螯蜂Ａｐｈｅｌｏｐｕｓ ａｌｂｉｆａｃｉａｌｉｓ Ｘｕ ｅｔ Ｈｅ,ＳＰ．ｎｏｖ。褐唇常足螯蜂Ａｐｈｅｌｏｐｕｓ ｓｐａｄｉｃｅｕｓ Ｘｕ ｅｔ Ｈｅ,ｓｐ．ｎｏｖ。和扁腹常足螯蜂Ａｐｈｅｌｏｐｕｓ ｃｏｍｐｒｅｓｓｕｓ Ｘｕ ｅｔ Ｙａｏ,ｓｐ．ｎｏｖ。     

后螯蜂属一新种──南昌后螯蜂（膜翅目：螯蜂科）

本文报道了采自江西省南昌市的后螯蜂属ＤｅｉｎｏｄｒｙｉｎｕｓＰｅｒｋｉｎｓ一新种：南昌后螯蜂Ｄｅｉｎｏｄｒｙｉｎｕｓｎａｎｃｈａｎｇｅｎｓｉｓ,ｓｐ．ｎｏｖ。     

中国新记录异螯蜂属及广东一新种记述（膜翅目：螯蜂科）

本文报道了采自我国南方广东省的异螯蜂属１新种－－扁角异螯蜂Ａｄｒｙｉｎｕｓ ｐｌａｔｙｃｏｒｎｉｓ ｓｐ．ｎｏｖ．，模式标本存浙江农业大学植物保护系生物的治标本室。     

新疆双距螯蜂属一新种（膜翅目：螯蜂科）

本文记述新疆螯蜂科二个种,－为黑腹单节螯蜂Ｈａｐｌｏｇｏｎａｔｏｐｕｓｏｒａｔｏｒｉｕｓ（Ｗｅｓｔｗｏｏｄ）,另－为新种：晶额双距螯蜂Ｇｏｎａｔｏｐｕｓｃｒｙｓｔａｌｌｉｎｕｓｓｐ．ｎｏｖ．     

双距螯蜂属一新种：膜翅目：螯蜂科：双距螯蜂亚科

本文描述双距螯蜂属一新种，毛双距螯蜂Ｇｏｎａｔｏｐｕｓ ｃａｐｉｌｌｕｓ ｓｐ．ｎｏｖ．。     

Rostromysis bacescuii gen. et sp. nov. and Megalopsis den-ticauda gen. et sp. nov. (Crustacea -- Mysidacea) from the south-west coast of Australia

Rostromysis bacescuii gen. et sp. nov. and Megalopsis denlicaudagen. et sp. nov. belonging to the tribe Leptomysini are describedfrom the south-west coast of Australia. The characters uniqueto the genus Rostromysis are the unusually long club-shapedrostrum and the large delicate lamella-like pleopods of thefemale, thus easily distinguishing it from the allied generaTenagomysis and Doxomysis. The genus Megalopsis is closely alliedto Leptomysis, Prionomysis and Promysis but is readily distinguishablein having a short linguiform uncleft telson with a pair of medianplumose setae.     

Psammodiscus nov. gen. Based on Coscinodiscus nitidus

The epipsammic diatom Coscinodiscus nitidus differs from typicalCoscinodiscus species in areola arrangement and structure, closingmembrane structure, rimoportula arrangement, and habitat. Severalsimilarities exist between it and Rhaphoneis species but, whilethe relationship between these is close, the two cannot be consideredcongeneric. A new genus, Psammodiscus, is created to includeC. nitidus. Coscinodiscus nitidus, Rhaphoneis, Psammodiscus nov. gen., epipsammic diatom, diatom taxonomy     

Addenda Clavariacea. III

1. The following noveltiea are described, with notes on otherspecies of their genera : Aphelaria subgen. Tremellodendropsis for the A. tuberosa alliancewith subtremellaceous basidia: A. amboinensis (Lév.)comb. nov. Chaetotyphula gelatinosa sp. nov. and C. tetraspora sp. nov.from Tropical America, whence C. hyalina (Jungh.) Corner isalso recorded. Clavariadelphus junceus (Fr.) Corner is recorded from Brazil. Mucronella flava sp. nov. from Iowa. Phaeoapheloria austra1iensis gen. et sp. nov. is intermediatebetween Aphelaria and stereoid fungi. Pistillaria trispora sp. nov. from Iowa: P. tucumanensis (Speg.)comb. nov. for Typhula tucumanensis Speg. Phistillina calyx Heim is excluded as marasmioid. 2. The Physalacria-subseriea is reviewed, and the followingare described aa new: Hormomitaria albidula sp. nov. from Brazil Pseudotyhula gen. nov. from West Africa: P. ochracea sp. nov.as the typespecies : P. tenuipes (Lloyd) comb. nov. (= Mucronellatenuipes Lloyd).     

Pollination Biology in a TropicalAcaciaHybrid (A. mangiumWilld. xA. auriculiformisA. Cunn. ex Benth.)

Floral biology and pollination mechanism of theAcaciahybrid(A. mangiumWilld. xA. auriculiformisA. Cunn. ex Benth.) growingin Thailand are investigated using light and electron microscopy.The hybrid is andromonoecious. A floral spike consists of about150 loosely arranged flowers. Flowers are cream coloured, fragrantand have no floral nectaries. The pistil has a solid style witha smooth, wet stigma and amphitropous ovules with immature integuments.The anther consists of eight loculi, each bearing only one 16-grainpolyad. The flowers are weakly protogynous. Anthesis is completeat 0500–0600 h but peak female receptivity begins at 0200–0300h and is completed that day. The stigmatic exudate is of thelipophilic type and is secreted from the stigmatic cells bya holocrine mechanism. Pollen is the main floral reward forthe insect pollinators. There are several floral characteristicswhich facilitate pollen transfer from anthers and depositionon stigmas.Apis melliferaandCeratinasp. are the most effectivepollinators because they are the most common visitors and carrya heavy load of hybrid polyads. However, their behaviour inforaging for pollen in the same tree and weak protogynous dichogamymay promote self-pollination in the hybrid. The hybrid has lowpollination success due to low pollinator number. An increasein exposure time of flowers to pollinators or pollinator numbermay increase pollination success but may not affect the rateof pollen deposition on stigmas due to the relatively smallsize of the stigma in relation to the polyad.Copyright 1998Annals of Botany Company Acaciahybrid,Acacia mangium, Acacia auriculiformis, pollination, pistil receptivity, anthesis, pollinators.     

Karyological Anatomy of Fibre Development in the Leaves of Agave americana L. var. marginata alba Trel.

From a study of 100 metaphase plates in root-tip squashes and75 fibre-cells in leaf-base squashes, it is found that the chromosomenumber, although having an irregular type of variation, commonlytend to occur as multiples of 15, the haploid number. In developingfibre-cells the tendency of complete endomitosis (resultingin 2n, 4n, and 8n numbers) is stronger than the partial endomitosis(resulting in 5n, 6n, 7n, etc.). Nuclear volumes of fibre-cellsalso roughly correspond to 2K, 4K, and 8K. Significant linearcorrelations between chromosome number and nuclear volume andbetween nuclear volume and fibre-cell volume has been obtained.Thus the development and differentiation of fibres involve completeand partial endomitoses, accompanied by somatic non-disjunctionphenomena.     

Epacris crassifolia R. Br. (Epacridaceae) - A Reappraisal

Epacris crassifolia R. Br.s. lat.,as represented in collectionsat G, BM, HO, NSW, MEL, CBG and CAN, has been redefined as threeseparate species. The common lax, prostrate form includes twosubspecies,E. crassifoliassp.crassifoliaR. Br.stat. nov. andE.crassifoliassp.macrofloraCrowden et Menaduessp. nov.separatedon floral morphology.E. pinoideaCrowden et Menaduesp. nov.andE.lithophilaCrowden et Menaduesp. nov.are erect and woody, beingdistinguished on leaf and floral characters. Epacridaceae; Epacris crassifolia ; Epacris lithophila; Epacris pinoidea; new species     

Pollination Ecology ofChloranthus serratus(Thunb.) Roem. et Schult. andCh. fortunei(A. Gray) Solms-Laub. (Chloranthaceae)

Flowering and pollination biology ofChloranthus serratusandChloranthusfortuneiwere studied. Flowering took place from early Marchto mid–April inCh. fortunei, and from April to September,the whole growth period, inCh. serratus.The flowering periodof an inflorescence ofCh. serratusaveraged about 8 d and anthesisof a single flower was 5–6 d. Flowers are slightly protogynous.The flower emitted fragrance when the androecium became white.Both species are entomophilous with thrips as exclusive pollinators.Under natural conditions, fruit set occurs mainly as a resultof cross-pollination, but self-pollination and agamospermy mayoccur in some cases. In flowers ofCh. fortuneiandCh. serratus,theincurved androecium, the carpel and the spike axis form a nearlyclosed chamber that contains the anthers and stigma. The developmentof a floral-axial chamber may be an important step towards amore economical and effective pollination system. Floral morphology,pollination biology and fossil evidence suggest that the mainevolutionary trend in the genusChloranthusis towards developmentof ‘closed’ flowers. The fidelity of the relationshipbetweenChloranthusand thrips is regarded as a specialized featureof pollination biology and this relationship may have originatedearly in the evolutionary lineage.Copyright 1999 Annals of BotanyCompany Chloranthaceae,Chloranthus, Thysanoptera,flowering, floral-axial chamber, pollination, evolution trends.     

The Genus Hantzschia with Particular Reference to H. virgata v. intermedia (Grun.) comb. nov.

The diatom genus Hantzschia and its closely associated generaare discussed briefly. From a study of one variety of Hantzschiavirgata by light and scanning electron microscopy the morphologyof the siliceous components has been determined. The new combinationH. virgata v. intermedia has been proposed. The possible originof Hantzschia from Nitzschia by a displacement of the raphesystem at cell division is discussed.