Transactions of The Linnean Society of London. 2nd Series: Botany最新文献

{"title":"I. Report on the Botany of the Wollaston Expedition to Dutch New Guinea, 1912–13","authors":"H. Ridley","doi":"10.1111/J.1095-8339.1916.TB00009.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1916.TB00009.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1916-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131959373","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}

{"title":"IX. Notes on the Morphology of certain Structures concerned in Reproduction in the Genus Gnetum.","authors":"H. Pearson","doi":"10.1111/J.1095-8339.1915.TB00287.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1915.TB00287.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1915-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127602320","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}

{"title":"X. On Isoëtes japonica, A. Br.","authors":"C. West, H. Takeda","doi":"10.1111/J.1095-8339.1915.TB00288.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1915.TB00288.X","url":null,"abstract":"Summary \u0000 \u0000The trilobed caudex of Isoetes japonica consists of two distinct structures, viz. Stem and Rhizophore, to which the leaves and roots are respectively attached; but owing to the stunted growth of the plant, all external morphological differentiation between the two organs has been completely lost. \u0000 \u0000 \u0000 \u0000Stem.—The stem-apex has the form of a conical mass of tissue situated at the base of the funnel-shaped depression in the cortex. In this protuberance no definite apical cell can be distinguished. \u0000 \u0000 \u0000 \u0000Primary xylem, phloem, and cortex are differentiated from the primary meristem of the stem. \u0000 \u0000 \u0000 \u0000The eauline primary vascular axis is a non-medullated monostele. Primary phloem, in which true sieve-tubes occur, surrounds the central xylem-core. \u0000 \u0000 \u0000 \u0000An endophytic mycorrhiza is found in the peripheral cells of the primary cortex. \u0000 \u0000 \u0000 \u0000The cambium, which arises very early from the outermost layer of the plerome, cuts off secondary cortex externally and secondary phloem internally. \u0000 \u0000 \u0000 \u0000Sieve-tubes with sieve-areas of the typical cryptogamic type occur both in the primary and in the secondary phloem, and are continuous with those of the leaf-traces. \u0000 \u0000 \u0000 \u0000No secondary xylem is formed in Isoetes japonica. \u0000 \u0000 \u0000 \u0000Rhizophore.—The roots, the vascular bundles of which are collateral with usually endarch protoxylem, are arranged in acropetal series upon a distinct root-bearing organ, the rhizophore, which in this genus must be regarded as an organ sui generis. \u0000 \u0000 \u0000 \u0000The primary growth of the rhizophore proceeds from a primary meristem situated along three radiating lines which correspond to the main fissures in the caudex. \u0000 \u0000 \u0000 \u0000The primary and secondary tissues of the rhizophore are essentially similar to the corresponding tissues of the stem. \u0000 \u0000 \u0000 \u0000Leaf.—The protoxylem of the collateral vascular bundle is exarch in the lamina, but becomes mesarch in the sporangial region of the leaf. \u0000 \u0000 \u0000 \u0000True sieve-tubes occur in the phloem of the leaf. The ligule is very well developed in Isoetes japonica. It has a protective function; the young ligule envelops the younger leaves and also secretes mucilage. \u0000 \u0000 \u0000 \u0000Systematic.—The species of Isoetes can be grouped together under two sections, Eu-Isoetes and Cephaloceraton. \u0000 \u0000 \u0000 \u0000Isoetes occupies an isolated position amongst recent Vascular Cryptogams, and is regarded as the sole living representative of the Class Isoetales. \u0000 \u0000 \u0000 \u0000In conclusion, we wish to express our thanks to Professor J. B. Earmer, F.R.S., for his valuable advice and kindly criticism throughout the course of this investigation.","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1915-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130171596","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}

{"title":"VIII. A Contribution to the Study of the Evolution of the Flower, with special reference to the Hamamelidaceæ, Caprifoliaceæ, and Cornaceæ.","authors":"A. S. Horne","doi":"10.1111/J.1095-8339.1914.TB00286.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1914.TB00286.X","url":null,"abstract":"Summary \u0000 \u00001 \u0000The following details of floral morphology are recorded:— \u0000 \u0000 \u0000 \u0000 \u0000 \u0000a.  \u0000The occasional occurrence of hermaphrodite flowers in Aucuba himalaica. \u0000 \u0000b.  \u0000Biovulate ovaries in A. japonica and himalaica. \u0000 \u0000c.  \u0000Anomalous flowers in the hybrid Garrya Thuretii—these consist of three congenitally united flower-heads borne upon one “pedicel,” thus combining the characters of both parents, viz., G. elliplica in which the flowers occur in axillary trimerous groups, and G. Fadyenii in which they are situated singly in the axil of each bract. \u0000 \u0000d.  \u0000Rudiments of a single whorl of stamens in the female flowers of Griselinia littoralis and lucida and of the absent petals in G. lucida. \u0000 \u0000e.  \u0000Rudimentary terminal parietal placentae in Corokia Cotoneaster. \u0000 \u0000 \u0000 \u0000 \u0000 \u00002 \u0000The terminal ovules are suspended axially in Davidia, Cornus, Helwingia, and in bilocular forms of Marlea and Corokia; probably axially by origin in Nyssa and Griselinia, and parietally borne in Aucuba and Garrya. \u0000 \u0000 \u0000 \u0000 \u0000 \u00003 \u0000The ovule exhibits considerable variety in organization:— \u0000 \u0000 \u0000 \u0000 \u0000 \u0000a.  \u0000It is in Nyssa and Davidia of the dorsal type (raphe ventral or adaxial) with radial orientation; of the ventral type in Helwingia and Corokia (raphe dorsal or abaxial) with radial orientation, but the inverse of the former; and of the ventral type with tangential orientation in bilocular forms of Cornus and Marlea. \u0000 \u0000b.  \u0000The nucellus in the genera investigated (including Davidia and Nyssa described as bitegumentary by Harms and Wangerin) becomes invested with a single integument. \u0000 \u0000c.  \u0000The integument is completely free from the nucellus in Aucuba and Griselinia, but in the specialized ovules of Davidia and Helwingia is only found as a separate organ towards the summit of the nucellus. \u0000 \u0000d.  \u0000The nucellus consists of about seven axial rows of cells in Aucuba; four or five in Cornus, Davidia, Griselinia, and Garrya; and three in Helwingia, where it approximates to the condition obtaining in Lilium and Inula. \u0000 \u0000e.  \u0000The nucellus of Aucuba, in the formation of a definite layer of parietal tissue, a small epidermal cap, and in subsequent bulk-extension owing to cell-division, approaches the type described by Pechoutre for the Rosaceae. \u0000 \u0000f.  \u0000The germination of more than one megaspore, already recorded by the writer for Davidia, occurs also, but not to the same extent, in Aucuba. \u0000 \u0000 \u0000 \u0000 \u0000 \u00004 \u0000The floral vascular systems of the Cornaceae do not conform to one type as in the Caprifoliaceae. It is in Cornus of the Caprifoliacean type. The systems of Griselinia, Nyssa, and Helwingia exhibit Araliacean tendencies; those of Davidia and Marlea are transitional in character between that found in Aralia and the synthetic systems of Cornus and the Caprifoliaceae. The stage of economical advance reached by Viburnum has not been attained. \u0000 \u0000a.  \u0000a. Infra-locular extensions of vascular tissue occur in Aucuba and unilocular forms of Marlea. \u0000 \u0000b.  \u0000The ovular trace is anomalous in Griselini","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1914-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125691372","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}

{"title":"VII. An Anatomical Study of the Palæozoic Cone‐genus Lepidostrobus.","authors":"F. Arber","doi":"10.1111/J.1095-8339.1914.TB00285.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1914.TB00285.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1914-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130503953","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}

{"title":"V. Observations on the Morphology and Anatomy of the Genus Mystropetalon, Harv.","authors":"R. J. Harvey‐Gibson","doi":"10.1111/J.1095-8339.1913.TB00283.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1913.TB00283.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1913-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129338162","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}

{"title":"VI. On the Cuticles of some Recent and Fossil Cycadean Fronds.","authors":"H. H. Thomas, N. Bancroft","doi":"10.1111/J.1095-8339.1913.TB00284.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1913.TB00284.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"67 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1913-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131950796","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}

{"title":"IV. Marine Algæ, Rhodophyceæ, of the ‘Sealark’ Expedition, collected by Mr. J. Stanley Gardiner, M.A.","authors":"A. Bosse","doi":"10.1111/J.1095-8339.1913.TB00282.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1913.TB00282.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1913-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131714958","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}

{"title":"III. Rhexoxylon africanum, a new Medullosean Stem.","authors":"N. Bancroft","doi":"10.1111/J.1095-8339.1913.TB00281.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1913.TB00281.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1913-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130673905","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}

{"title":"II. On some Indian Jurassic Gymnosperms.","authors":"N. Bancroft","doi":"10.1111/J.1095-8339.1913.TB00279.X","DOIUrl":"https://doi.org/10.1111/J.1095-8339.1913.TB00279.X","url":null,"abstract":"","PeriodicalId":364930,"journal":{"name":"Transactions of The Linnean Society of London. 2nd Series: Botany","volume":"59 6","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1913-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114033929","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}