大果黄杉
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2023-11-09 07:51
Pseudotsuga macrocarpa (Torrey) Mayr, Wald. Nord-Amer. 278, 1890; Sang. Silva N. Amer. 12: 93. t. 608. 1898; Beissn. Handb. Nadelh. ed. 2. 111. 1909; Clinton-Baker, Illustr. Conif. 3: 79. cum tab. 1913; Dallimore and Jackson, Handb. Conif. 483. 1923, ed. 3. 584. f. 105. 1948, rev. Harrison, Handb. Conif. and Ginkgo. ed. 4. 560. f. 110. 1966; Flous in Trav. Lab. Forest. Toulouse Ⅱ, 4(2): 94. f. 1-13. 1936, et in Bull. Soc. Hist. Nat. Toulouse 71: 126. f. 1-13. 1937; 郑万钧等, 植物分类学报 13(4): 63. 1975. ——Abies douglasii Macrocarpa Torrey in Ives #$#Report in the Colorado River. in the West#$# 1860. ——Pseudotsuga douglasii macrocarpa Englem. in Brewer and Watson, Bot. Calif. 2: 120. 1880. ——Abietia douglasii (Lindl.) Kent var. macrocarpa (Torrey) Kent, Veitch's Man. Conif. ed. 2. 478. 1900.
本种与花旗松的区别在其叶先端凸尖,下面有2条白色气孔带,具明显的绿色边带。球果特大,长达12-15厘米,径4-6厘米,卵状圆柱形或椭圆状圆柱形,种鳞宽大,斜方状肾形或横椭圆状肾形,宽大于长,苞鳞与种鳞近等长或稍长于种鳞,中裂较短,种子、种翅均较宽大。
原产美国加利福尼亚南部山区。我国江西庐山引种栽培。