On the comparative anatomy and affinities of the Araucarineae.

[11] GOEPPERT HR, 1881, BOT CENT, P378

[12] GOTHAN W, 1910, KUNGL SVENSKA VETENS, V45

[13] GOTHAN W, 1907, SITZUNGS GESELLSCHAF

[14] GRANDEURY, 1877, FLORE CARBONIFERE DE

[15] On the real nature of the Tracheae in the Ferns. [J]. ANNALS OF BOTANY, 1908, 22 (85-88) : 517 - U73

[16] HALET F, 1910, THESIS

[17] HERTY CH, 1911, USDA FOREST SERVICE, V90

[18] Jeffrey E.C., 1903, BOSTON SOC NAT HIST, V5, P441

[19] On cretaceous pityoxyla [J]. BOTANICAL GAZETTE, 1906, 42 : 0001 - 0015

[20] JEFFREY EC, 1905, MEM BOST SOC NAT HIS, V6, P1

[11] GOEPPERT HR, 1881, BOT CENT, P378

[12] GOTHAN W, 1910, KUNGL SVENSKA VETENS, V45

[13] GOTHAN W, 1907, SITZUNGS GESELLSCHAF

[14] GRANDEURY, 1877, FLORE CARBONIFERE DE

[15] On the real nature of the Tracheae in the Ferns. [J]. ANNALS OF BOTANY, 1908, 22 (85-88) : 517 - U73

[16] HALET F, 1910, THESIS

[17] HERTY CH, 1911, USDA FOREST SERVICE, V90

[18] Jeffrey E.C., 1903, BOSTON SOC NAT HIST, V5, P441

[19] On cretaceous pityoxyla [J]. BOTANICAL GAZETTE, 1906, 42 : 0001 - 0015

[20] JEFFREY EC, 1905, MEM BOST SOC NAT HIS, V6, P1