四川木格措十字脆杆藻科硅藻的分类研究

TAXONOMY OF STAUROSIRACEAE(BACILLARIOPHYTA) FROM MUGECUO, SICHUAN PROVINCE, CHINA

文章报道了采自四川木格措的十字脆杆藻科(Staurosiraceae)硅藻植物5属13种,包括2个中国新记录属:拟十字脆杆藻属Pseudostaurosiropsis和十字型脆杆藻属Stauroforma,6个中国新记录种:康乃迪克拟十字脆杆藻Pseudostaurosiropsis connecticutensis Morales,窄十字型脆杆藻Stauroforma exiguiformis (Lange-Bertalot)Flower,Jones & Round,圆形假十字脆杆藻Pseudostaurosira cataractarum (Hustedt) Wetzel,Morales & Ector,串连假十字脆杆藻Pseudostaurosira trainorii Morales,拟连结假十字脆杆藻Pseudostaurosira pseudoconstruens(Marciniak) Williams & Round和喜寒窄十字脆杆藻Staurosirella frigida van de Vijver & Morales。文章对每个种类的形态、生境特征以及地理分布进行了详细描述,同时结合新的分类系统,对《中国淡水藻志(第十卷)》中十字脆杆藻科种类进行了整理修订。

5 genera 13 taxa of Staurosiraceae (Bacillariophyta) were collected from Mugecuo Scenic Area,Sichuan province,China.Among them,2 genera of Pseudostaurosiropsis Morales and Stauroforma Flower,Jones & Round were newly recorded in China,and there are 7 newly recorded species of China:Staurosirella frigida Van de Vijver & Morales,S.martyi (Héribaud-Joseph) Morales,Pseudostaurosira cataractarum (Hustedt) Wetzel,Morales & Ector,P.pseudoconstruens (Marciniak) Williams and Round,P.trainorii Morales,Pseudostaurosiropsis connecticutensis Morales and Stauroforma exiguiformis (Lange-Bertalot) Flower Jones & Round.The detailed morphology,habitat characteristics and geographical distribution of each taxon were given.Moreover,according to new classification system,Staurosiraceae species were revised in Algarum Sinicarum Aquae Dulcis (Tomus X).