The Origin of Floral Structures Through Insect and Other AgenciesKegan Paul, Trench, Trübner & Company, Limited, 1888 - 349 pagini |
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Pagina x
... represents an advance ,. . . as in cases of what is termed saltatory evolution . " Thus , * Page 676. Dr. Vines here uses almost identically the same words as myself in 1881. I have just found that Mr. St. G. Mivart said much the same ...
... represents an advance ,. . . as in cases of what is termed saltatory evolution . " Thus , * Page 676. Dr. Vines here uses almost identically the same words as myself in 1881. I have just found that Mr. St. G. Mivart said much the same ...
Pagina xvi
... represented by a rod - like pedicel . Two anthers are deve- loped instead of one ( a ) 24. Receptacular tube of Rose , bearing a leaf and a stipular sepal 25. Vertical section of the receptacular tube of Hawthorn , with supernumerary ...
... represented by a rod - like pedicel . Two anthers are deve- loped instead of one ( a ) 24. Receptacular tube of Rose , bearing a leaf and a stipular sepal 25. Vertical section of the receptacular tube of Hawthorn , with supernumerary ...
Pagina 3
... represent a cross section of the five Sepals constituting the Calyx . The second circle is that of the five Petals ... represented two GENERAL PRINCIPLES . 3.
... represent a cross section of the five Sepals constituting the Calyx . The second circle is that of the five Petals ... represented two GENERAL PRINCIPLES . 3.
Pagina 4
George Henslow. constitute the Androecium . Lastly , there are represented two whorls of Carpels forming the Gynoecium † or Pistil . The outermost whorl of carpels is superposed to the sepals , the innermost to the petals . There may be ...
George Henslow. constitute the Androecium . Lastly , there are represented two whorls of Carpels forming the Gynoecium † or Pistil . The outermost whorl of carpels is superposed to the sepals , the innermost to the petals . There may be ...
Pagina 5
... representing a more advanced or a more highly differentiated state than that of cohesion . Reversions may occur by " solution , " which brings about a freedom of parts normally united , as in the abnormal cases of Apples , double ...
... representing a more advanced or a more highly differentiated state than that of cohesion . Reversions may occur by " solution , " which brings about a freedom of parts normally united , as in the abnormal cases of Apples , double ...
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
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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.