串叶松香草属菊科松香草属,多年生草本、属C_3植物。一般可长10—12年,种子繁殖。茎叶具有松香树脂气味,故得名。原产北美中部,1979年从朝鲜引入我国,我省华县已大面积种植成功。种子褐色,千粒重20—23g,无休眠期,萌发力极强。据国外报道,该草能耐—38℃的严寒;山西生物所观察,夏季在40℃的温室内可正常生长开花结实。 Clover Pinus is a Asteraceae genus, perennial herb, belonging to C_3 plants. Generally can grow 10-12 years, seed breeding. Stems and leaves with rosin smell, so named. Native North America Central, introduced from North Korea in 1979, China, Huaxian County, our province has been planted a large area. Seeds brown, grain weight 20-23g, no dormant period, strong germination. According to foreign reports, the grass can withstand the cold of -38 ℃; Shanxi biological observation, the summer in the 40 ℃ greenhouse can grow normally flowering and fruiting.