关键词: 五针白皮松, 濒危种, 木材解剖, 瘤状层, 系统位置

Abstract: The wood structure of Pinus squamata that is near extinction in Pinus is anatomically observed by LH and SEM. The wood structure of Pinus squamata was reported firstly. The systemic location in Pinus was analyzed through the wood structure and the quantitative characteristics of wood member. The warty layers appeare obviously on the inner surface of tracheid and the surface of pit border, It is different from the subgenus Haploxylon (sortpine) and subgenus Diploxylon (Hardpine) which has its own features. The auther has made a systematic study and suggested to establish a new Subgenus Parry based on its gross and anatomical characteristics, ultrastructure and that of P. bungenana which was reported.

Key words: PINUS SQUAMATA, ENDANGEROUS SPECIES, WOOD ANATOMY, WARTY LAYERS, SYSTEMATIC LOCATION