滇西北高山冰缘带植物新记录

高山冰缘带是陆地上海拔最高的植被带,自然条件恶劣,难以到达。滇西北高山冰缘带植物区系具有丰富的物种多样性,特有性高。该文对滇西北高山冰缘带进行植物多样性调查,通过采集标本、查阅植物志及模式标本等参考资料进行了形态特征研究。结果表明:发现云南新记录属1个,即囊种草属(Thylacospermum Fenzl); 新记录种5个,即囊种草 Thylacospermum caespitosum(Camb.)Schischk]、红萼蝇子草 Silene rubricalyx (Marq.)Bocquet]、狭叶丛菔(Solms-laubachia angustifolia J. P. Yue, Al-Shehbaz & H. Sun)、圆齿鸦跖花 Oxygraphis endlicheri (Walp.)Bennet & S. Chandra]、密垫火绒草 Leontopodium haastioides (Hand.-Mazz.)Hand.-Mazz.]。这些新发现一方面丰富了滇西北高山冰缘带的植物区系资料,另一方面说明了高山冰缘带的植物多样性调查仍然存在不足。针对青藏高原高山冰缘带特别是植物多样性调查薄弱及空白地区,细致和深入的调查工作亟待开展和完善。

protein kinase genes in Rehmannia glutinosa

The alpine subnival belt is the highest in the terrestrial vegetation belt, endures harsh natural environment, and is inaccessible due to high altitudes and remote distances. Alpine subnival flora of Northwest Yunnan has abundant plant diversity and high endemism. In this study, we investigated the plant diversity of the alpine subnival belt in Northwest Yunnan through collection specimens and studied morphological characteristics based on the flora references and type specimens. One new record genus and five new record species in Yunnan have been reported: Thylacospermum Fenzl, Thylacospermum caespitosum(Camb.)Schischk, Silene rubricalyx(Marq.)Bocquet, Solms-laubachia angustifolia J. P. Yue, Al-Shehbaz & H. Sun, Oxygraphis endlicheri(Walp.)Bennet & S. Chandra, Leontopodium haastioides(Hand.-Mazz.)Hand.-Mazz. These new records enrich the floristic information for the alpine subnival belt in Northwest Yunnan, and prove that there are still deficiencies in the investigation of plant diversity in the alpine subnival belt. It is urgent to thoroughly carry out and improve investigation work in the alpine subnival belt of the Qinghai-Tibet Plateau, especially in the under-investigated and blank areas.