(Chapm. ex Engelm.) Sarg. Pinus clausa (Chapm.) Vasey Pinus columbiana Penhallow, 1907 Pinus concolor Engelm. ex Gordon, 1858 Pinus conoides Perkins, 1904

管胞

常出現在髓線周圍，樹脂可能為髓線中的薄壁細胞所合成，並貯存於此類管胞中，樹脂可阻斷管胞中水分的縱向運輸，美國植物學家大衛·P·裴哈洛（英语：David P. Penhallow）認為此類管胞中的樹脂與被子植物的侵填體（英语：Tylose）相似，可能具有類似功能；部分被子植物具有維管管胞（vascular

志留纪—泥盆纪陆地革命

Shougang; Xue, Jinzhuang; Liu, Zhenfeng; Wang, Deming. Zosterophyllum Penhallow around the Silurian-Devonian Boundary of Northeastern Yunnan, China. International

Found in articles

松屬

(Chapm. ex Engelm.) Sarg. Pinus clausa (Chapm.) Vasey Pinus columbiana Penhallow, 1907 Pinus concolor Engelm. ex Gordon, 1858 Pinus conoides Perkins, 1904

管胞

志留纪—泥盆纪陆地革命

Shougang; Xue, Jinzhuang; Liu, Zhenfeng; Wang, Deming. Zosterophyllum Penhallow around the Silurian-Devonian Boundary of Northeastern Yunnan, China. International