The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
Din interiorul cărții
Rezultatele 1 - 5 din 47
Pagina xvi
... stigmas of Aristolochia 22. Vertical sections of buds of Pyrus and Cotoneaster , showing degrees of adhesion or undifferentiated condition between the ovary and receptacular tube ... ... ... ... ... ... 23. Orchis Morio ( ? ) , with ...
... stigmas of Aristolochia 22. Vertical sections of buds of Pyrus and Cotoneaster , showing degrees of adhesion or undifferentiated condition between the ovary and receptacular tube ... ... ... ... ... ... 23. Orchis Morio ( ? ) , with ...
Pagina xvii
... stigmas of the two forms of Pansy , showing the conditions which ( a ) prevent and ( b ) secure self - ferti- lisation , respectively ... 255 FIGURE 55. Styles and stigmas of self - fertilising forms LIST OF ILLUSTRATIONS . xvii.
... stigmas of the two forms of Pansy , showing the conditions which ( a ) prevent and ( b ) secure self - ferti- lisation , respectively ... 255 FIGURE 55. Styles and stigmas of self - fertilising forms LIST OF ILLUSTRATIONS . xvii.
Pagina xviii
George Henslow. FIGURE 55. Styles and stigmas of self - fertilising forms of Pansy .. 56. Details of structure of cleistogamous Violets ... PAGE 257 258 260 ... 261 261 57. Details of structure of cleistogamous Oxalis Acetosella 58 ...
George Henslow. FIGURE 55. Styles and stigmas of self - fertilising forms of Pansy .. 56. Details of structure of cleistogamous Violets ... PAGE 257 258 260 ... 261 261 57. Details of structure of cleistogamous Oxalis Acetosella 58 ...
Pagina 49
... stigmas of Asclepias are at first free , but later in their deve- lopment they become coherent by contact . Congenital cohesion takes place almost from the very commencement of growth and development of the parts , so that when full ...
... stigmas of Asclepias are at first free , but later in their deve- lopment they become coherent by contact . Congenital cohesion takes place almost from the very commencement of growth and development of the parts , so that when full ...
Pagina 81
... stigmas , as already described , grasps the central column and sucks the honey head downwards , and so gets dusted on the abdomen , the pollen from which is thus trans- ferred to the next flower visited . The adhesion of the stamens to ...
... stigmas , as already described , grasps the central column and sucks the honey head downwards , and so gets dusted on the abdomen , the pollen from which is thus trans- ferred to the next flower visited . The adhesion of the stamens to ...
Alte ediții - Afișează-le pe toate
The Origin of Floral Structures Through Insect and Other Agencies George Henslow Vizualizare completă - 1893 |
The Origin of Floral Structures Through Insect and Other Agencies George Henslow Vizualizare completă - 1888 |
Termeni și expresii frecvente
adaptation to insect androecium anemophilous anthers appear arrested atrophy autogamy axial axis bear become bracts calyx capsules carpellary carpels cause cells character chorisis cleistogamous cleistogamous flowers colour condition corolla crossed Darwin degeneracy degradation Demy 8vo diclinism differentiated fact female flowers fertile fertilisation fibro-vascular cords filaments floral whorls florets foliaceous Forms of Flowers Fourth Edition genera genus grains hermaphrodite heterostyled hypertrophy Illustrations insect agency insects intercrossing irregular irritation Journ Labiata latter leaf leaves less long-styled form male flowers marginal mature Müller nature normally observed occur Orchids origin ovary ovules ovuliferous pedicel perianth petaline petals petioles phyllotaxis pistil placentas pollen pollen-tubes Primula produced protandrous protogynous Ranunculus receptacular tube regard remarkable result seedlings seeds seen self-fertilisation self-fertilised plants sepaline sepals short-styled form Small crown 8vo species spiral stamens stigmas structure style superposed temperature Teratology Third Edition tion tissue usually visited weight whorls
Pasaje populare
Pagina 30 - II. Physics and Politics ; or, Thoughts on the Application of the Principles of "Natural Selection " and " Inheritance
Pagina 23 - REYNOLDS, Rev. JW— The Supernatural in Nature. A Verification by Free Use of Science. Third Edition, Revised and Enlarged, Demy 8vo, 14^.
Pagina 30 - XI. Animal Mechanism : a Treatise on Terrestrial and Aerial Locomotion. By Professor EJ Marey. With 117 Illustrations. Third Edition. Crown 8vo, 5^.
Pagina 17 - NEWMAN, JH, DD— Characteristics from the Writings of. Being Selections from his various Works. Arranged with the Author's personal Approval.
Pagina 29 - FIRST BOOK OF BOTANY. Designed to Cultivate the Observing Powers of Children. With 300 Engravings. New and Cheaper Edition. Crown 8vo.
Pagina 11 - HAWEIS, Rev. HR, MA— Current Coin. Materialism— The Devil — Crime — Drunkenness — Pauperism — Emotion — Recreation —The Sabbath.
Pagina 16 - MARKHAM, Capt. Albert Hastings, RN— The Great Frozen Sea : A Personal Narrative of the Voyage of the Alert during the Arctic Expedition of 1875-6.
Pagina 7 - COX, Rev. Sir GW, MA, Bart., and JONES, Eustace Hinton.— Popular Romances of the Middle Ages. Third Edition, in I vol. Crown Svo, 6s.
Pagina 21 - HDM SPENCE. Genesis. By the Rev. T. WHITELAW, MA With Homilies by the Very Rev. JF MONTGOMERY, DD, Rev. Prof. RA REDFORD, MA, LL.B., Rev. F. HASTINGS, Rev. W. ROBERTS, MA An Introduction to the Study of the Old Testament by the Venerable Archdeacon...
Pagina 26 - STRECKER- WISLICENUS.— Organic Chemistry. Translated and Edited, with Extensive Additions, by WR HODGKINSON, Ph.D., and AJ GREENAWAY, FIC Second and cheaper Edition. Demy 8vo, 12s. 6d. Suakin, 1885 ; being a Sketch of the Campaign of this year. By an Officer who was there.