Hauptverzeichnis über Samen und Pflanzen - Haage & Schmidt. (Haage & Schmidt, 1915)

Hauptverzeichnis über Samen und Pflanzen - Haage & Schmidt. (Haage & Schmidt, 1921)

Henderson's autumn catalogue - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1914)

Henderson's autumn catalogue : 1908 - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1913)

Henderson's garden guide - Henry G. Gilbert Nursery; Seed Trade Catalog Collection. (Peter Henderson & Co, 1913)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & Co, 1890)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & Co, 1910)

Henderson's Handbook of plants and general horticulture - Henderson, Peter, 1822 -1890 (P. Henderson & company, 1910)

Henderson's Handbook of plants - Henderson, Peter, 1822 -1890 (P. Henderson & Co, 1881)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1984)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1985)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1989)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1990)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1991)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1994)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1996)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1998)

Herbertia - American Plant Life Society. ([American Plant Life Society], 1999)

Herbertia - American Plant Life Society. (American Plant Life Society, 1934)

Herbertia - American Plant Life Society. (American Plant Life Society, 1935)

Herbertia - American Plant Life Society. (American Plant Life Society, 1938)

Herbertia - American Plant Life Society. (American Plant Life Society, 1939)

Herbertia - American Plant Life Society. (American Plant Life Society, 1940)

Herbertia - American Plant Life Society. (American Plant Life Society, 1941)

Herbertia - American Plant Life Society. (American Plant Life Society, 1942)