On This Day

April 15

Richard Middleton Fox

April 15, 1911 – April 25, 1968

United States

John G. Franclemont

April 15, 1912 – May 26, 2004

United States

Collected Tortricidae and identified Noctuidae

Grover Bruce Gilbert

April 15, 1890 – February 1983

United States

Asteraceae

Collected Asteraceae and identified Plagiochilaceae

Claude Charles Goureau

April 15, 1790 – February 06, 1879

France

Jacques Grasset de Saint-Sauveur

April 15, 1757 – May 03, 1810

France

Hermann Grassmann
Hermann Grassmann

April 15, 1809 – September 26, 1877

Kingdom of Prussia

Encarnación Rosa Guaglianone

April 15, 1932 – October 12, 2014

Argentina

Jacques Bernard Hombron

April 15, 1798 – October 16, 1852

France

Asteraceae

Collected Asteraceae and identified Pectinidae

Charles Huber
Charles Huber

April 15, 1819 – August 20, 1907

German Reich; France

Johann Hübner
Johann Hübner

April 15, 1668 – May 21, 1731

Bärbel Inhelder

April 15, 1913 – February 16, 1997

Switzerland

Wilhelm Israel

April 15, 1872 – December 04, 1928

Collected Helicodontidae

John George Jack

April 15, 1861 – 1949

United States

Rosaceae

Collected Rosaceae

Vojtěch Ježek

April 15, 1892 – August 18, 1960

Czechoslovakia; Cisleithania

Theobald Jones

April 15, 1790 – February 07, 1868

United Kingdom of Great Britain and Ireland; Great Britain

Arnold Kac

April 15, 1895 – May 20, 1960

Zora Karaman

April 15, 1907 – December 10, 1974

Socialist Federal Republic of Yugoslavia

Theodor Kotschy
Theodor Kotschy

April 15, 1813 – June 11, 1866

Austria

Asteraceae

Collected Asteraceae and identified Lamiaceae

Stefan Kéler

April 15, 1897 – December 04, 1967

Germany; Poland

Cerambycidae

Collected Cerambycidae and identified Cerambycidae

Howard Laily

April 15, 1856 – March 05, 1929

Karl Langer
Karl Langer

April 15, 1819 – December 08, 1887

Austria-Hungary

Édouard Lartet
Édouard Lartet

April 15, 1801 – January 28, 1871

France

Marguerite Le Comte
Marguerite Le Comte

April 15, 1717 – January 22, 1800

France

Klaus Ulrich Leistikow

April 15, 1929 – January 19, 2002

Pinnulariaceae

Collected Pinnulariaceae

Sofia Grigorievna Lepneva

April 15, 1883 – October 08, 1966

Russian Empire; Soviet Union

Li Bo

April 15, 1929 – May 21, 1998

People's Republic of China

Maurice Loewy
Maurice Loewy

April 15, 1833 – October 15, 1907

Austrian Empire; France

Giuseppe Mariani

April 15, 1850 – March 02, 1933

Switzerland

Maxwell Tylden Masters
Maxwell Tylden Masters

April 15, 1833 – May 30, 1907

United Kingdom of Great Britain and Ireland

Albert Davis Mead

April 15, 1869 – December 08, 1946

United States