On the presence of a parichnos in recent plants.

[1] BERTRAND, 1891, TRAVAUX MEMOIRES FAC, V2

[2] DEGARY, 1884, COMP ANATOMY PHANERO

[3] HEGELMAIER, 1872, BOT ZTG

[4] HILL TG, 1904, BRIT ASS K

[5] HOVELACQUE, 1892, STERNB MEM SOC LINN, V17

[6] JONES, T LINN SOC LOND, V7

[7] MASLEN, 1899, T LINN SOC LOND, V5

[8] SCOTT, 1900, STUDIES FOSSIL BOT

[9] SCOTT DH, 1901, PHIL T ROY SOC LOND, V194

[10] SEWARD, T ROY SOC EDIN, V39, P1900

[1] BERTRAND, 1891, TRAVAUX MEMOIRES FAC, V2

[2] DEGARY, 1884, COMP ANATOMY PHANERO

[3] HEGELMAIER, 1872, BOT ZTG

[4] HILL TG, 1904, BRIT ASS K

[5] HOVELACQUE, 1892, STERNB MEM SOC LINN, V17

[6] JONES, T LINN SOC LOND, V7

[7] MASLEN, 1899, T LINN SOC LOND, V5

[8] SCOTT, 1900, STUDIES FOSSIL BOT

[9] SCOTT DH, 1901, PHIL T ROY SOC LOND, V194

[10] SEWARD, T ROY SOC EDIN, V39, P1900