02523nas a2200181 4500008004100000245005900041210005700100260001200157300001300169490000700182520201500189100001502204700001402219700002402233700002102257700001502278856004802293 2017 eng d00aFloral structure and ontogeny of Syndiclis (Lauraceae)0 aFloral structure and ontogeny of Syndiclis Lauraceae c10/2017 ae01863580 v123 a

Generic delimitation in the Beilschmiedia group of the Lauraceae remains ambiguous because flowering specimens of a few genera with confined distribution are poorly represented in herbaria, and a few floral characters important for taxonomy are still poorly known. Syndiclis is sporadically distributed in southwestern China, and is represented in the herbaria by only a few flowering specimens. We conducted field investigations to collect floral materials of four species and observed structures and ontogeny of the tiny flowers using both light microscopy (LM) and scanning electron microscopy (SEM). The results show that the genus Syndiclis possesses flowers with huge variation in both merosity and organ number. Flowers of the genus are dimerous, trimerous, or tetramerous, or have mixed merosity with monomerous and dimerous, or dimerous and trimerous, or trimerous and tetramerous whorls. The number of staminodes ranges from two to eight, depending on floral merosity, and on how many stamens of the third androecial whorl are reduced to staminodes. The staminodes of the fourth androecial whorl are comparable to the staminodes in Potameia, but the staminodes of the third androecial whorl of Syndiclis are relatively larger than the staminodes in Potameia. They are erect or curved inwards, covering the ovary. The anthers are usually two-locular, but rarely one-locular or three-locular. Each stamen of the third androecial whorl bears two conspicuous and enlarged glands at the base. The lability of floral merosity and organ number of Syndiclis may have been caused by changes of pollination system and loss of special selective pressures that are present in most Lauraceous plants with fixed floral organ number. This study furthers our understanding of variation and evolution of a few important characters of the Beilschmiedia group and provides essential data for a revised generic classification of the group.

1 aZeng, Gang1 aLiu, Bing1 aFerguson, David, K.1 aRohwer, Jens, G.1 aYang, Yong uhttps://lauraceae.myspecies.info/node/2036101456nas a2200193 4500008004100000245008100041210006900122520087800191653001701069653001801086653001401104653001801118653001301136653001701149653001301166653001401179100002101193856004801214 2017 eng d00aA contribution to the pollen morphology of the Cryptocarya group (Lauraceae)0 acontribution to the pollen morphology of the Cryptocarya group L3 a

In this study, pollen grains of 74 taxa (84 specimens) of the Cryptocarya group, including 22 type collections, have been examined by scanning electron microscopy. Pollen grains of Aspidostemon, Endiandra, Hexapora, Potameia and Triadodaphne are described here for the first time. For the other genera (Beilschmiedia, Cryptocarya, Eusideroxylon, Potoxylon) the results of previous studies are largely confirmed, but a novel type of exine covered by clavate-baculate structures was found in a few Cryptocarya species (C. gracilis and C. macrodesme from New Caledonia, C. saligna from South America). A larger diversity of spinule morphology and density than hitherto known is documented among the African species of Beilschmiedia.

10aAspidostemon10aBeilschmiedia10aEndiandra10aEusideroxylon10aHexapora10ainaperturate10aPotameia10aPotoxylon1 aRohwer, Jens, G. uhttps://lauraceae.myspecies.info/node/2036000749nas a2200169 4500008004100000022001400041245007700055210006900132300001200201490000700213520024000220100001900460700001700479700001600496700001900512856004800531 2007 eng d a0107-055X00aA new species of Beilschmiedia (Lauraceae) from the Western Ghats, India0 anew species of Beilschmiedia Lauraceae from the Western Ghats In a407-4100 v243 a

Beilschmiedia tirunelvelica is described and illustrated as a new species from the Western Ghats of Agasthiyamalai Biosphere Reserve, India. The differences to similar taxa are provided with dichotomous key and table.

1 aManickam, V.S.1 aMurungan, C.1 aJothi, G.J.1 aSundaresan, V. uhttps://lauraceae.myspecies.info/node/2031400303nas a2200097 4500008004100000245003600041210003600077490000600113100001900119856006700138 1885 eng d00aListe des plantes de Madagascar0 aListe des plantes de Madagascar0 v11 aBaillon, Henri uhttp://www.biodiversitylibrary.org/item/41447#page/39/mode/1up02285nas a2200217 4500008004100000022001400041245014100055210006900196260001200265300001200277490000800289520157600297653001701873653001401890653002201904100002101926700002701947700002101974700002401995856004802019 2014 eng d a1179-316300aA phylogenetic analysis of the Cryptocarya group (Lauraceae), and relationships of Dahlgrenodendron, Sinopora, Triadodaphne, and Yasunia0 aphylogenetic analysis of the Cryptocarya group Lauraceae and rel c02/2014 a111-1320 v1583 a

A phylogenetic analysis based on nuclear ITS and plastid trnK intron sequences confirms that Dahlgrenodendron, Sinopora, Triadodaphne, and Yasunia are members of the Cryptocarya group, as expected from morphology.  Dahlgrenodendron from South Africa is sister to Aspidostemon from Madagascar. Triadodaphne inaequitepala is nested within Endiandra (both from Australasia), and Yasunia from South America is nested among South American Beilschmiedia species. Sinopora is a member of the Beilschmiedia clade, but its precise position is still uncertain.  Among large genera of the group, Cryptocarya is clearly monophyletic, and Endiandra appears to be as well, if T. inaequitepala is included. Beilschmiedia is paraphyletic with respect to (at least) Potameia and Yasunia. Most well-supported clades within genera are geographically homogeneous, except a clade including the Chilean Cryptocarya alba and two New Caledonian species. Both Beilschmiedia and Cryptocarya have reached the Americas more than once.  Four-locular anthers are plesiomorphic in the Cryptocarya group; two-locular anthers have arisen by fusion of the two pollen sacs of a theca. In the plesiomorphic fruit type, the ovary is completely enclosed in receptacular tissue; a superior fruit, seated free on its pedicel, is a synapomorphy of the Beilschmiedia clade.

10aBiogeography10aevolution10afloral morphology1 aRohwer, Jens, G.1 aMoraes, Pedro, L.R. de1 aRudolph, Barbara1 avan der Werff, Henk uhttps://lauraceae.myspecies.info/node/1980300355nas a2200109 4500008004100000245004800041210004600089300001200135490000600147100002400153856006800177 1996 eng d00aStudies in Malagasy Lauraceae: II. New taxa0 aStudies in Malagasy Lauraceae II New taxa a463-4750 v61 avan der Werff, Henk uhttp://www.biodiversitylibrary.org/item/14666#page/460/mode/1up