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1.马尾松种子瘦长,近纺锤形,种粒小,千粒重为9.0～13.7克,种壳薄而脆;黑松种子呈三角状椭圆形,种粒短肥,颗粒大,千粒重为14.40～16.0克,种壳厚而硬。 2.马尾松种子外种皮蜡质层少,呈灰褐色,背部具2～3条斜纹;黑松种子外种皮蜡质层多而厚,呈黑褐色,脊部具3～4条斜纹。 3.马尾松种子种脊从顶端种脐始,一侧通达种子基部,另一侧为种长的1/2;而黑松种子种脊从顶端种脐始,一侧为种长的1/2,构成钝三
1. Pinus massoniana seed is elongated, nearly spindle-shaped, small seeds, grain weight of 9.0 ~ 13.7 grams, the shell is thin and crisp; seeds of pine are triangular oval-shaped short stalks, large particles, grain weight of 14.40 ~ 16.0 Grams, kind of shell thick and hard. 2. Pinus massoniana seed outer waxy layer less, gray-brown, with 2 to 3 twill on the back; Pinus sylvestris seed coat waxy layer thick and thick, dark brown, ridge with 3 to 4 twill . 3. Pinus massoniana seed ridge from the top of the umbilical beginning, one side of the access to the base of the seed, the other side of the seed length 1/2; and black pine seed ridge from the top of the umbilical beginning, 2, constitute a blunt three