The vessel in seed plants

[1] Anatomical characters in the evolution of Pinus [J]. AMERICAN NATURALIST, 1910, 44 : 284 - 293

[2] Scalariform pitting - A primitive feature in angiospermous secondary wood [J]. SCIENCE, 1918, 48 : 16 - 18

[3] Jeffrey E.C., 1917, ANATOMY WOODY PLANTS, DOI 10.5962/bhl.title.17178

[4] Solereder H., 1908, SYSTEMATIC ANATOMY D

[5] The anatomy and relationships of the Gnetales. I - The genus ephedra. [J]. ANNALS OF BOTANY, 1912, 26 (101-4) : 1077 - U267

[6] THOMPSON WP, 1918, BOT GAS, V65, P89

[1] Anatomical characters in the evolution of Pinus [J]. AMERICAN NATURALIST, 1910, 44 : 284 - 293

[2] Scalariform pitting - A primitive feature in angiospermous secondary wood [J]. SCIENCE, 1918, 48 : 16 - 18

[3] Jeffrey E.C., 1917, ANATOMY WOODY PLANTS, DOI 10.5962/bhl.title.17178

[4] Solereder H., 1908, SYSTEMATIC ANATOMY D

[5] The anatomy and relationships of the Gnetales. I - The genus ephedra. [J]. ANNALS OF BOTANY, 1912, 26 (101-4) : 1077 - U267

[6] THOMPSON WP, 1918, BOT GAS, V65, P89