Pennsylvanian flora of Illinois as revealed in coal balls II

[1] ARBER EAN, 1908, PHILOS T ROY SOC LON, V200, P133

[2] Benson M, 1911, ANN BOT-LONDON, V25, P1045

[3] Mazocarpon or the structural sigillariostrobus. [J]. ANNALS OF BOTANY, 1918, 32 (128) : 569 - U12

[4] Bertrand CE, 1910, CR HEBD ACAD SCI, V150, P1019

[5] BERTRAND P, 1911, PROGRESSUS REI BOTAN, V4

[6] BERTRAND PAUL, 1933, BULL SOC BOT FRANCE, V80, P527

[7] BRONGNIART A, 1881, RECHERCHES GRAINES F

[8] FONTAINE WM, 1880, PERMIAN UPPER CARBON, P96

[9] HOVELACQUE M, 1892, MEM SOC LINNEENNE NO, V17

[10] Kidston R., 1905, T ROY SOC EDINBURGH, V41, P533, DOI 10.1017/S008045680003550X

[1] ARBER EAN, 1908, PHILOS T ROY SOC LON, V200, P133

[2] Benson M, 1911, ANN BOT-LONDON, V25, P1045

[3] Mazocarpon or the structural sigillariostrobus. [J]. ANNALS OF BOTANY, 1918, 32 (128) : 569 - U12

[4] Bertrand CE, 1910, CR HEBD ACAD SCI, V150, P1019

[5] BERTRAND P, 1911, PROGRESSUS REI BOTAN, V4

[6] BERTRAND PAUL, 1933, BULL SOC BOT FRANCE, V80, P527

[7] BRONGNIART A, 1881, RECHERCHES GRAINES F

[8] FONTAINE WM, 1880, PERMIAN UPPER CARBON, P96

[9] HOVELACQUE M, 1892, MEM SOC LINNEENNE NO, V17

[10] Kidston R., 1905, T ROY SOC EDINBURGH, V41, P533, DOI 10.1017/S008045680003550X