植物学雑誌

日本産苔類研究 (其一)

服部新佐

1943 年 57 巻 683-684 号 p. 357-363
発行日: 1943年
公開日: 2007/06/18

DOIhttps://doi.org/10.15281/jplantres1887.57.357

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1) そりはくさりごけハ原記相文ニ“Hab. Japonia.”トアルノミデ其後只一度REIMERSニ依リ支那ニ記録サレタ事アリ, 甚ダ疑問ノ種デアツタガ, 今囘本邦屋久島ニ産スル事ヲ確實ニシタ。尚本種ハ明ラカニ Euosmolejeunea 屬ノモノデアリ, 而モ本邦特産ノ E. auriculata STEPH. ニ近縁ノ種デアル。依ツテ其ノ屬名ヲ變更シタ。
2) ひめみのりごけ (新稱) ハ同屬中最モ小形ノ一新種デアツテ sect. Minores ニ屬スル。最モ近イ P. pycnocladus (TAYL.) STEPH. ハ花被ニ10褶アリ, 葉下片頂端ノ齒牙ハ2～3デアル。
3) えふじようごけ (L. goebelii) ノ一型トシテ f. serrulata ナル品種ヲ報告スル。元來えふじようごけハ生葉上ニ着生スルモノデアルガ, 本品種ハ岩上ニ着生シ, 基本種ヨリ稍ゝ小型デ葉形モ少シク變異シ, 特ニ葉縁及ビ花被縁部ハ密ニ小鋸齒状ヲナス。
4) にしやまやすでごけト其ノ基本種タル Fr. nepalensis ヲ比較スルニ何等確然タル差ハ認メラレナイガ次ノ如ク區別出來ル。
{植物體ハョリ強大デ莖モ長ク, 疎ニ分枝シ分枝ハ長イ; 莖葉ハ接在, 極メテ中凹, 頂端ハ強ク内捲スル, 長サ1.3mm, 幅0.9mm, 附加部モ長大; 腹葉ハ兩側ヨリ基部ニカケテ強ク反曲シ, 耳状ノ附加部ヲ成ス......Fr. nepalensis (Fig. 3, a～j)
ヨリ弱少, 莖モ短ク, ョリ密ニ分枝シ, 分枝ハ比較的短イ; 莖葉ハ重ナリ合ヒ, 中凹, 頂端ハ内曲スル, 長サ1mm, 幅0.7mm, 附加部ハ前者ヨリ短小; 腹葉兩側ノ反曲ノ度及ビ附加部ノ發達ノ程度ハ小ナリ......Fr. nepalensis var. nishiyamensis (Fig. 3, k～r)
5) Madotheca spinulosa STEPH. ナル一種ハうるしごけ (Porella vernicosa LINDB.)ノ葉縁ノ鋸齒弱小化シ或ハ殆ド全邊ニ近ヅイタ一型ニ過ギナイ。本種ノ原標本(VERDOORN ed., Hepaticae Selectae et Criticae, Ser. III, no. 331) 及ビ前項Frullania nepalensis ノ熱帶産標本ヲ御貸與サレタ櫻井久一博士ニ感謝スル。
6) ひめはねごけ (新稱) ハ上高地上流一ノ保近ク巨幹ニ着生シ美シイ緑色ヲ呈シテ居タ。P. hakkodensis ST. ニ近イガ葉背縁ガヨリ莖ニ流レ強ク下曲スル點, 葉細胞ハ基部ニ於テ甚ダ長ク50～70μヲ算スル點, 花被ハ長筒形ヲナシ長サ4mm ニ及ブ點ヨリ明瞭ニ區別サレル。

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日本珪藻土礦床ノ植物分類學的研究 (第I報)

奧野春雄

1943 年 57 巻 683-684 号 p. 364-370
発行日: 1943年
公開日: 2007/06/18

DOIhttps://doi.org/10.15281/jplantres1887.57.364

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On the Japanese diatomite deposits, several studies have hitherto been made by others chiefly from geological and industrial points of view. Unfortunately, however, no satisfactory details of botanical study of them have been reported. Prompted by these circumstances, the present writer has begun his study of the Japanese diatomite deposits mainly from the stand point of systematic botany, and it is his desire to describe and discuss in the successive series of this magazine as many species as possible of the fossil diatoms which construct the Japanese diatomite deposits.
The Yatuka (Okayama prefecture) deposit contains the following species:-
1) Stephanodiscus niagarae EHRENBERG (the dominant element). 2) Cyclotella comta (EHRENBERG) KÜTZING. 3) Melosira granulata (EHRENBERG) RALFS. 4) Tetracyclus emarginatus (EHRENBERG) W. SMITH. 5) Opephora Martyi HÉRIBAUD. 6) Synedra goulardi BRÉBISSON. 7) Navicula yatukaensis HORIKAWA et OKUNO. 8) Navicula tuscula (EHRENBERG) KÜTZING. 9) Neidium Hitchcockii (EHRENBERG) CLEVE.

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浮萍科植物ノ生育ニ對スルモリブデンノ意義

吉村フジ

1943 年 57 巻 683-684 号 p. 371-386
発行日: 1943年
公開日: 2007/06/18

DOIhttps://doi.org/10.15281/jplantres1887.57.371

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When Lemnaceae plants are cultured in the nutrient solution containing nitrate as nitrogen source, molybdenum is necessary in a minute concentration for their healthy growth. If this element is omitted, chlorosis and other necrotic symptoms appear. In the case of Spirodela polyrhiza moreover an accumualation of anthocyan happens. The minimum concentration of molybdenum necessary for the growth is 10^-10mol. Molybdenum in the concentration 10^-3mol shows the harmful effects on the plant growth. The pH-value of the nutrient solution decreases to 4, 0 during the culture, when NH₄NO₃ is used as nitrogen source. In a NH₄NO₃-culture lacking in Mo, the plants die in high acidity at last, while in the nutrient solution containing this element in a minute amount the plant growth continues, if not healthy, and after a certain period the pH-value remains unchanged 4, 2. This difference depends upon the fuction of molybdenum, which favours the nitrate assimilation at high acidity. In a Mo-deficient plant body nitrate accumulates in remarkable amount. From this fact it seems protects that molybdenum has to do with the nitrate reduction, and protects the plant from the injury caused by the nitrate accumulation. In Spirodela polythiza and Lemna sp. the Mo-deficiency causes the formation of flower buds. Tungsten shows the similar physislogical function for the Lemnaceae plants as described in the case of molybdenum, but tungsten is required for this purpose in a higher concentration than the latter element.

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雜録

1943 年 57 巻 683-684 号 p. 387-412
発行日: 1943年
公開日: 2013/05/14

DOIhttps://doi.org/10.15281/jplantres1887.57.683-684_387

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會報

1943 年 57 巻 683-684 号 p. App1-App18
発行日: 1943年
公開日: 2023/10/21

DOIhttps://doi.org/10.15281/jplantres1887.57.683-684_App1

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