02148nas a2200193 4500008004100000245013100041210006900172260001200241300001000253490000800263520153300271653001201804653001401816653001501830100002101845700002501866700001501891856004801906 2016 eng d00aCuticular features of Cryptocarya (Lauraceae) from Peninsular Malaysia, Thailand and Indo-China and its taxonomic implications0 aCuticular features of Cryptocarya Lauraceae from Peninsular Mala c01/2016 a26-440 v2443 a

Cuticular features potentially offer valuable information on phytotaxonomy, especially for plants that are difficult to classify or identify. Cryptocarya is one such difficult and poorly known genus, and we investigated its cuticular features to evaluate their taxonomic implications. We examined cutinized leaf epidermis and the stomatal complex for 21 species from Peninsular Malaysia, Thailand and Indo-China, as well as one species endemic to Borneo and one to Sumatra, and compared features among members of this group, between this group and congeners in the other countries, and between this group and the other genera of Lauraceae. Many of the Cryptocarya species studied have straight to slightly curved anticlinal epidermal walls and butterfly-shaped stomatal ledges, although some variation was seen in the ornamentation of the periclinal epidermal walls and the appearance of the stomatal complex. Based on these results, we recognized four groups and two subgroups among the South-east Asian species. Comparison with congeneric taxa in the other countries indicates that butterfly-shaped stomatal ledges are often shared among the species across the regions. However, no cuticular features occur exclusively in any of the species groups of Cryptocarya studied here, nor in the genus as a whole. We consider that cuticular features are useful in the recognition of infrageneric groups within Lauraceae, bearing in mind that they might have evolved in parallel in different genera.

10acuticle10aepidermis10aMorphology1 aNishida, Sachiko1 ade Kok, Rogier, P.J.1 aYang, Yong uhttps://lauraceae.myspecies.info/node/2036602523nas 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/2036100399nas a2200121 4500008004100000245007100041210006900112300001200181490000700193100001500200700001400215856004800229 2015 eng d00aSpecies catalogue of Lauraceae in China: problems and perspectives0 aSpecies catalogue of Lauraceae in China problems and perspective a232-2360 v231 aYang, Yong1 aLiu, Bing uhttps://lauraceae.myspecies.info/node/2035502806nas a2200181 4500008004100000245008600041210006900127260001200196300001200208490000700220520225700227100001502484700001402499700002402513700002402537700001502561856004802576 2014 eng d00aOrigin and evolution of the unusual leaf epidermis of Caryodaphnopsis (Lauraceae)0 aOrigin and evolution of the unusual leaf epidermis of Caryodaphn c07/2014 a296-3090 v163 a

We studied leaf epidermal anatomy of Caryodaphnopsis Airy Shaw, a genus disjunct between tropical Asia and tropical America, using light microscope and scanning electron microscope. We sampled 10 species of Caryodaphnopsis and 52 species of other Lauraceous genera. Our observations suggest that this genus possesses a unique lower leaf epidermis. Compared with other leaves of Lauraceae, this genus has an additional layer covering the lower leaf epidermis and the stomatal apparatus. The additional layer is either closed or poriferous/reticulate. The outer periclinal walls of the lower leaf epidermis protrude outside forming hollow domes or columns, and the distal endings of these domes or columns are expanded and fused, which forms the additional covering layer. Three different types are recognized in the genus: (1) the middle portion of the protuberances is not contracted and the distal endings are free or adnate to each other, with only limited space between the two layers; (2) the middle portion is slightly contracted in the outer part, the distal endings are fused, with more space between the two layers; (3) the middle portion is conspicuously contracted and elongated into columns, the distal endings are fused and it is roomy between the two layers. The structure of the leaf lower epidermis is reconstructed and illustrated for the first time. This unusual leaf lower epidermis of Caryodaphnopsis is derived in Lauraceae and is an autapomorphic character. Outward protrusions of the outer periclinal walls forming papillate protuberances surrounding the stomatal apparatus are also found in a few other genera including Neocinnamomum, a genus closely related to Caryodaphnopsis, but the distal endings of these protrusions are not expanded and connected. We hypothesize that the periclinal wall of the lower leaf epidermis has been gradually modified in Lauraceae, from a smooth pattern in most genera, to papillate pattern (e.g. Neocinnamomum), and to the double layered lower leaf epidermis in Caryodaphnopsis. The origin and evolution of this unique lower epidermis might have been related to the climatic cooling and aridification since the late Eocene.

1 aZeng, Gang1 aLiu, Bing1 avan der Werff, Henk1 aFerguson, David, K.1 aYang, Yong uhttps://lauraceae.myspecies.info/node/2028000474nas a2200145 4500008004100000245008000041210006900121300001200190490000700202100001500209700001800224700001400242700002400256856004800280 2012 eng d00aLeaf cuticular anatomy and taxonomy of Syndiclis (Lauraceae) and its allies0 aLeaf cuticular anatomy and taxonomy of Syndiclis Lauraceae and i a861-8780 v371 aYang, Yong1 aZhang, Li-yan1 aLiu, Bing1 avan der Werff, Henk uhttps://lauraceae.myspecies.info/node/1980200567nas a2200169 4500008004100000245014000041210006900181260001200250300000900262490000600271100001400277700001500291700001300306700001500319700001500334856004800349 2013 eng d00aBeilschmiedia turbinata: A newly recognized but dying species of Lauraceae from tropical Asia based on morphological and molecular data0 aBeilschmiedia turbinata A newly recognized but dying species of  c06/2013 a1-100 v81 aLiu, Bing1 aYang, Yong1 aLei, Xie1 aZeng, Gang1 aMa, Keping uhttps://lauraceae.myspecies.info/node/1975800605nas a2200205 4500008004100000022001400041245009100055210006900146260001200215300000800227490000800235653001700243653002400260653001000284653001300294100001400307700001500321700001500336856004800351 2013 eng d a1179-315500aA new species of Caryodaphnopsis Airy Shaw (Lauraceae) from southeastern Yunnan, China0 anew species of Caryodaphnopsis Airy Shaw Lauraceae from southeas c07/2013 a1-80 v11810aconservation10afield investigation10aflora10ataxonomy1 aLiu, Bing1 aYang, Yong1 aMa, Keping uhttps://lauraceae.myspecies.info/node/19757