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首页> 外文期刊>Current Science: A Fortnightly Journal of Research >Sikkim silver brake fern at risk
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Sikkim silver brake fern at risk

机译：锡金银煞蕨有危险

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The limestone silver brake fern, Pteris subquinata Wall. ex J. Agardh is distributed in the Kumaon region in the Himalaya and in China1. In Sikkim, in addition to the above-mentioned normal plant, a unique silver-streaked or centrally variegated form of this species is also found1–3. Based on the collections of H. C. Levinge from Lachen Valley, the detailed distinguishing features between the normal plant and the variegated form have been highlighted by Beddome. He also postulated that this variegated Sikkim plant ‘. . .would be a very pretty plant for cultivation’ 2. The variegated form has not been introduced in horticulture so far and hence there are no data available on its cultivation. Generally, P. subquinata grows in the valley at lower to mid altitudes (600–1500 m) as a lithophyte on limestone rocks in the Himalaya. Levinge has perhaps mentioned the locality of this plant as Lachen Valley in a broader sense, because of the higher altitude and the cold climatic conditions of Lachen village (2800 m) are not conducive for the growth of this limestone fern. Previously, this variegated form was found growing at Chungthang, the deepest point of Lachen Valley3. During an exploration survey in November 2008, it was found growing abundantly below Chungthang, 2 km from Pegong to Toong in the Teesta River Valley1. Owing to its beauty and horticultural potential, we cultivated this fern in the experimental garden of Botanical Survey of India (BSI), Gangtok in November 2008. However, the plant did not survive because of off-season cultivation or difficulties in cultivation of limestone ferns4. Due to resemblance of this variegated plant with the common Indian silver brake, Pteris argyraea, its horticultural potential was highlighted, and a new horticultural name, ‘Sikkim silver brake fern’ was proposed. The local people and nurserymen were encouraged to cultivate the fern.
机译：石灰石银制的蕨类植物，Pteris subquinata墙。前阿加德（J. Agardh）分布在喜马拉雅山和中国的库蒙地区。在锡金，除了上述正常植物外，还发现了该物种的独特的银条纹或中央杂色形式1-3。 Beddome强调了基于Lachen Valley的H. C. Levinge的收藏，正常植物和杂色形式之间的详细区别特征。他还假设这是锡金的杂色植物‘。 。将会是非常漂亮的栽培植物。2.到目前为止，杂色形式尚未在园艺中引入，因此尚无有关其栽培的数据。通常，作为喜马拉雅山石灰岩上的石生植物，P。subquinata生长在中低海拔（600-1500 m）的山谷中。 Levinge可能从广义上讲这种植物是Lachen谷地，因为Lachen村海拔高（2800 m）和寒冷的气候条件不利于这种石灰石蕨类植物的生长。以前，这种杂色形式是在Lachen Valley3的最深处Chungthang上生长的。在2008年11月的一次勘探调查中，发现它在Teonga河谷的从Pegong到Toong 2公里的Chunghang下方大量生长。由于它的美丽和园艺潜力，我们于2008年11月在印度甘托克植物学实验园（BSI）的实验花园中种植了这种蕨类植物。但是，由于淡季种植或石灰石蕨类植物的种植困难，该植物无法生存4 。由于这种杂色植物与普通的印度银制刹车器Pteris argyraea相似，因此突出了其园艺潜力，并提出了一个新的园艺名称“锡金银制刹车蕨”。鼓励当地人和苗圃种植蕨类植物。

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