Feddes Repertorium最新文献_第6页

Notes on Potentilla (Rosaceae) of Altai. 10. New section from Mongolia 阿尔泰委陵菜属（蔷薇科）植物志。10.来自蒙古的新路段

Feddes Repertorium Pub Date : 2023-07-10 DOI: 10.1002/fedr.202300011

Alexey Kechaykin, Mikhail Skaptsov, Alexey Vaganov, Tatiana Sinitsyna, Vladimir Zaikov, Shukherdorj Baasanmunkh, Alexander Shmakov

引用次数: 0

Anomalous pollen cones in Pseudotaxus chienii (Taxaceae): A further support for the pseudanthial origin of the Taxus pollen cone chienii假红豆杉（红豆杉科）花粉锥的异常：对红豆杉花粉锥假人类起源的进一步支持

Feddes Repertorium Pub Date : 2023-07-07 DOI: 10.1002/fedr.202300002

Veit Martin Dörken, Hubertus Nimsch

{"title":"Anomalous pollen cones in Pseudotaxus chienii (Taxaceae): A further support for the pseudanthial origin of the Taxus pollen cone","authors":"Veit Martin Dörken, Hubertus Nimsch","doi":"10.1002/fedr.202300002","DOIUrl":"10.1002/fedr.202300002","url":null,"abstract":"Pseudotaxus pollen cones are compound inflorescences. Wild type and anomalous shaped pollen cones were studied. It is suggested that each perisporangiate microsporangiophore represents a strongly reduced flower (lateral pollen cone) and not a peltate microsporophyll. This explains their position in the axil of a scaly pherophyll. In the wild type, the axis of the flowers is so strongly reduced that it is no longer visible and the primordia of all inserted hyposporangiate microsporangiophores get in contact and fuse to a radial synangium. In some cases, the perisporangiate microsporangiophores/flowers were reduced to a single hyposporangiate microsporangiophore. This shows that the perisporangiate microsporangiophores of Pseudotaxus are not sporophylls, but strongly reduced lateral flowers, each consisting of several lateral hyposporangiate microsporangiophores, which fuse to a radial unit. By a reduction of all pherophylls in the Pseudotaxus inflorescence, the flower-like Taxus pollen cone structure is formed, which however represents an inflorescences with flowers reduced to perisporangiate microsporangiophores. If in Taxus pollen cones the lateral flowers get reduced to a single hyposporangiate microsporangiophore, the Torreya pollen cone is formed. In this case, the lateral hyposporangiate microsporangiophores of Torreya correspond to strongly reduced flowers and not to dorsiventral sporophylls.","PeriodicalId":53662,"journal":{"name":"Feddes Repertorium","volume":"134 3","pages":"149-156"},"PeriodicalIF":0.0,"publicationDate":"2023-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/fedr.202300002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48753986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gastrochilus flabelliformis (Blatt. & McCann) C.J.Saldanha (Epidendroideae: Vandeae: Aeridinae), an addition to the orchid flora of Sri Lanka, with taxonomic notes on Gastrochilus dasypogon (Sm.) Kuntze

Feddes Repertorium Pub Date : 2023-06-28 DOI: 10.1002/fedr.202200057

Kumudu Amerasinghe, Nadeera Weerasinghe, Muditha Abeysinghe, Champika Bandara, K. Philip Wojtas, Pankaj Kumar

引用次数: 0

In vitro development of gametophytes and sporophytes of critically endangered fern Christella kendujharensis S.K. Behera & S.K. Barik (Thelypteridaceae) 极度濒危蕨类植物Christella kendujharensis S.K. Behera & S.K. Barik配子体和孢子体的离体发育

Feddes Repertorium Pub Date : 2023-06-27 DOI: 10.1002/fedr.202200015

Niranjan Mishra, Sandip Kumar Behera, Saroj Kanta Barik

{"title":"In vitro development of gametophytes and sporophytes of critically endangered fern Christella kendujharensis S.K. Behera & S.K. Barik (Thelypteridaceae)","authors":"Niranjan Mishra, Sandip Kumar Behera, Saroj Kanta Barik","doi":"10.1002/fedr.202200015","DOIUrl":"10.1002/fedr.202200015","url":null,"abstract":"Christella kendujharensis S.K. Behera & S.K. Barik (family: Thelypteridaceae) is a critically endangered fern endemic to India. We developed its mass propagation protocol through in vitro spore culture in a liquid suspended medium for germination of gametophytes that produced sporophytes subsequently. The spores were monolete, reniform (mean length 36.49 ± 3.6 × breadth 25.67 ± 4.2 μm) to spheroidal with fimbriate and broad-winged perispore. The maximum germination was in the Parker's and Thompson's (P&TV) medium with 0.1 mg L−1 thiamin, 0.1 mg L−1 riboflavin, 0.1 mg L−1 biotin, 0.1 mg L−1 pyridoxin, 0.5 mg L−1 nicotinic acid, 100 mg L−1 myoinositol, 0.01 mg L−1 folic acid, and 3 mg L−1 glycine. Spore germination was Vittaria type and gametophyte development was Aspidium type. The cordate gametophyte developed archegonia on the 38th day and antheridia on the 42nd day of spore sowing. Both isolate and composite cultures developed sporophytes indicating the presence of intra-gametophytic selfing. Based on the maximum number of regenerated gametophytes, two combinations, that is, (i) 2 mg L−1 kinetin, and 0.01 mg L−1 2,4-dichlorophenoxyacetic acid, and (ii) 0.1 mg L−1 naphthaleneacetic acid and 2 mg L−1 kinetin in P&TV media were recommended for mass propagation of C. kendujharensis.","PeriodicalId":53662,"journal":{"name":"Feddes Repertorium","volume":"134 3","pages":"210-227"},"PeriodicalIF":0.0,"publicationDate":"2023-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43089645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leaf epidermal characteristics of Annonaceae Juss. and its taxonomic evidence in Nigeria and the Cameroons 番荔枝科植物的叶表皮特征。及其在尼日利亚和喀麦隆的分类学证据

Feddes Repertorium Pub Date : 2023-06-07 DOI: 10.1002/fedr.202200033

Sunday Adebunmi Adeniran, Akeem Babalola Kadiri, James Dele Olowokudejo

{"title":"Leaf epidermal characteristics of Annonaceae Juss. and its taxonomic evidence in Nigeria and the Cameroons","authors":"Sunday Adebunmi Adeniran, Akeem Babalola Kadiri, James Dele Olowokudejo","doi":"10.1002/fedr.202200033","DOIUrl":"10.1002/fedr.202200033","url":null,"abstract":"This study describes the comprehensive micromorphology and taxonomic evidence of 28 species of Annonaceae from Nigeria and the Cameroons using light microscopy to provide additional anatomical and morphological diagnostic characters to complement the systematics boundaries of the infrafamilial and tribal clades. The epidermal cell shape varies from polygonal to irregular on both or either surface except Annona reticulata with isodiametric on the adaxial surface. The anticlinal wall patterns are either undulated, straight, or curved in the family. The constant generic feature encountered includes hypostomata which are mostly paracytic except in Cananga odorata, Isolona zenkeri, Uvaria angolensis and Letestudoxa bella possessing pericytic, 1 + 2 laterocytic and stephanocytic, respectively. Hemiparacytics, brachyamphiparacytic and brachyparacytic stomata, which are variables of paracytic are also present. These stomata complexes proved useful in species delimitation and diagnostic of the family Annonaceae. Other foliar epidermal features were crystals of different shapes and sizes mainly of druses and styloid, unicellular trichome type, and anticlinal wall pattern. The pattern of affinity among the species suggested evidence of similarity and differences in the micromorphological characters, which cumulated to the distinct identification of each species. Based on the most reliable characters within the family, the k-means cluster, distance matrix, correlation coefficient, and UPGMA dendrogram tree were constructed.","PeriodicalId":53662,"journal":{"name":"Feddes Repertorium","volume":"134 4","pages":"241-256"},"PeriodicalIF":0.0,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44658298","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Gain a better understanding of the true entity of Arabis rimarum Rech. f., a misapplied plant under the name Draba aucheri Boiss. (Brassicaceae) 更好地了解Arabis rimarum Rech的真实实体。f.，一种被误用的植物，名为Draba aucheri Boiss。（十字花科）

Feddes Repertorium Pub Date : 2023-05-25 DOI: 10.1002/fedr.202200058

Ahmad Reza Khosravi, Atena Eslami-Farouji

引用次数: 1

Cheirostylis yunnanensis var. gloriae, an interesting new caterpillar orchid from Hong Kong, China 中国香港一种有趣的新型毛毛虫——云南Cheirostylis yunnanensis var.gloriae

Feddes Repertorium Pub Date : 2023-04-04 DOI: 10.1002/fedr.202200052

Pankaj Kumar, Stephan W. Gale

引用次数: 1

Alternanthera flavescens (Amaranthaceae), a new addition to Flora of India 印度植物区系新添的苋属植物

Feddes Repertorium Pub Date : 2023-03-29 DOI: 10.1002/fedr.202200007

Arya Sindhu, Anil Kumar Venugopalan Nair Saradamma