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Volume 51, Issue 612
Displaying 1-13 of 13 articles from this issue
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1937 Volume 51 Issue 612 Pages Cover_612-
Published: 1937
Released on J-STAGE: March 03, 2023
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Hiroshi Hara1937 Volume 51 Issue 612 Pages 891-899
Published: 1937
Released on J-STAGE: May 24, 2007
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Orchidaceae Novae Micronesianae a T. HOSOKAWA CollectaeNoriaki Fukuyama1937 Volume 51 Issue 612 Pages 900-906
Published: 1937
Released on J-STAGE: May 24, 2007
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Ryozo Kanehira1937 Volume 51 Issue 612 Pages 906-913
Published: 1937
Released on J-STAGE: May 24, 2007
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Masao Kumazawa1937 Volume 51 Issue 612 Pages 914-925
Published: 1937
Released on J-STAGE: May 24, 2007
JOURNAL FREE ACCESS1. The abnormal structure found in the root-tuber of Aconitum mitakense NAKAI has been described. This species is one of the representatives which exhibit the most remarkable abnormality, the tuber having both the very sinuous cambium and several separate strands of cambium. The remarkable abnormality of cambium is usually found in the tuber more than 2cm. in diameter.
2. The development of the tuber has been traced. Under cultivation, the daughter tuber begins to appear in March, before the erect stem comes to sprout. In that time it is very small, 1.5mm. in diameter, but in the middle of April it thickens to one third of the mother tuber in diameter, and at the end of the month, to nearly one helf of it.
3. The developmental history of the abnormal cambium has been traced. In the earliest stage of development, a circular zone of meristematic tissue appears in the part inside the primary phloem and outside the primary xylem, though the tangential row of initial cells is not evident. Next some fragments of the tangential cambium appear in the zone. Soon later the pith begins to change into meristem, from which secondary phloem strands and fragments of the secondary cambium are differentiated. By the connection of these fragmental rows of cambium, the sinuous or separate cambial features, found in the full-grown tuber, are produced.
4. For comparison, the abnormal structure in the geophilous organ of Aconitum gigas LÉV. et VAN. (a species of Lycoctonum) has been examined.
5. The relationship between the two sections of Aconitum, i.e. Lycoctonum and Napellus, has been considered. In Lycoctonum, the geophilous organ, which exhibits the abnormal structure, is represented by the perennial rhizome, while in Napellus by the biennial root. Further their abnormalities are also fundamentally different from each other in the developmental process and in the histological characters. From these facts, it is quite unreasonable to assume that the one represents a more original type than the other; and the phyletic gap between Lycoctonum and Napellus seems to the writer to be fairly large.View full abstractDownload PDF (1299K) -
Riukiti Kano1937 Volume 51 Issue 612 Pages 926-930
Published: 1937
Released on J-STAGE: May 24, 2007
JOURNAL FREE ACCESS1) Ein neues mechanisches Gewebe “Helicenchym” wurde im Blattrand von C. kousa und C. florida gefunden.
2) Die Elemente sind prosenchymatisch, und mit zwei oder drei merkwürdigen spiraligen Verdickungsleisten versehen, welche sich weit mächtiger entwickeln als die von Gefässen, und welche nicht verholzt sind. Verschmälerte Anheftung ist vorhanden.
3) Das Helicenchym kommt in Form eines Stranges vor, der fast den ganzen Blattrand durchzieht und sich basipetal in die Kante des Blattstiels hinein erstreckt. Der Strang ist durch zwei oder drei Zellen von der Epidermis getrennt.
An dieser Stelle möchte ich meinem hochverehrten Herrn Prof. Dr. YUDZURU OGURA für seine wohlwollende Leitung und seine wertvollen Ratschläge meinen verbindlichsten Dank aussprechen.View full abstractDownload PDF (941K) -
III. Heterochromosomen bei Gattung FrullaniaSEIZI TATUNO1937 Volume 51 Issue 612 Pages 931-937
Published: 1937
Released on J-STAGE: May 24, 2007
JOURNAL FREE ACCESSIn der vorliegenden Mitteilung wird über Heterochromosomen von 7 Arten der Gattung Frullania berichtet.
1. Bei den 6 im Folgenden angegebenen diözischen Arten der Untergattung Thyopsiella sind keine Geschlechtschromosomen zu erkennen. Sie alle haben je zwei Heterochromosomen, das H- und das h-Chromosom. Ihre Chromosomenformeln lauten:
Frullania moniliata _??_ _??_ 9=7+H+h
Frullania moniliata var. rotundata 9=7+H+h
Frullania aoshimensis _??_ _??_ 9=7+H+h
Frullania tsukushiensis 9=7+H+h
Frullania Makinoana _??_ _??_ 9=7+H+h
Frullania densiloba _??_ _??_ 9=7+H+h
2. Frullania boninensis, eine monözische Art der Untergattung Galeiloba, hat ebenfalls das H- und das h-Chromosom. Ihre Chromosomenformel lautet:
9=7+H+h.View full abstractDownload PDF (515K) -
1937 Volume 51 Issue 612 Pages 938-942
Published: 1937
Released on J-STAGE: March 03, 2023
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1937 Volume 51 Issue 612 Pages 943-950
Published: 1937
Released on J-STAGE: March 03, 2023
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1937 Volume 51 Issue 612 Pages App41-App42
Published: 1937
Released on J-STAGE: March 03, 2023
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1937 Volume 51 Issue 612 Pages App_1-
Published: 1937
Released on J-STAGE: March 03, 2023
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1937 Volume 51 Issue 612 Pages App_2-
Published: 1937
Released on J-STAGE: March 03, 2023
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1937 Volume 51 Issue 612 Pages Cover_612b-
Published: 1937
Released on J-STAGE: March 03, 2023
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