I. M. (Ivan Murray) Johnston (February 28, 1898–May 31, 1960), was a

United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territori ...

botanist. He studied at

Pomona College Pomona College ( ) is a private liberal arts college in Claremont, California. It was established in 1887 by a group of Congregationalists who wanted to recreate a "college of the New England type" in Southern California. In 1925, it became t ...

in Claremont, California and at

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of high ...

. His plant collections are housed in the '' Rancho Santa Ana Botanic Garden'', in Claremont, and also in the ''Gray Herbarium'' of Harvard University. His areas of interest, were, among others:

Pteridophytes A pteridophyte is a vascular plant (with xylem and phloem) that disperses spores. Because pteridophytes produce neither flowers nor seeds, they are sometimes referred to as "cryptogams", meaning that their means of reproduction is hidden. Ferns, ...

Spermatophyte A spermatophyte (; ), also known as phanerogam (taxon Phanerogamae) or phaenogam (taxon Phaenogamae), is any plant that produces seeds, hence the alternative name seed plant. Spermatophytes are a subset of the embryophytes or land plants. They inc ...

Honours

In 1925, German botanist August Brand, named a genus of

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (), commonly called angiosperms. The term "angiosperm" is derived from the Greek words ('container, vessel') and ('seed'), and refers to those plants th ...

s (belonging to the family Boraginaceae), from South America and southern states in USA, as ''

Johnstonella ''Johnstonella'' is a genus of flowering plants belonging to the family Boraginaceae. Its native range is south western and southern USA to Mexico, Peru to southern South America. It is found in the American states of Arizona, California, Nevada ...

'' in his honour. Then in 1933, botanist O.E.Schulz named a genus of flowering plants (belonging to the family

Brassicaceae Brassicaceae () or (the older) Cruciferae () is a medium-sized and economically important family of flowering plants commonly known as the mustards, the crucifers, or the cabbage family. Most are herbaceous plants, while some are shrubs. The leav ...

), from

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

as '' Ivania''. In 1936, botanist Hsen Hsu Hu published '' Sinojohnstonia'', which is a genus of flowering plants from China, belonging to the family Boraginaceae. Lastly in 1975, another botanist Kazmi, named a

monotypic genus In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

of flowering plants (belonging to the family Boraginaceae), from the

Western Himalaya The Western Himalayas refers to the western half of the Himalayas, in northern Pakistan and northwestern India. It is also known as the Punjab Himalayas. Four of the five tributaries of the Indus River in Punjab (Beas, Chenab, Jhelum, and Ravi) ...

region, '' Ivanjohnstonia'' also named in his honour.

Taxa named by Johnston

* '' Fitzroya cupressoides'' * '' Leucophyllum frutescens'' * '' Astragalus sprucei'' * '' Euplassa'' * '' Euplassa occidentalis'' * '' Fuchsia hypoleuca'' * '' Brunnera macrophylla''

References

Literature

* R.E.G.Pichi Sermolli, 1 March 1991 * James S Miller, Mary Sue Taylor und Erin Rempala: ''Ivan M. Johnston's Studies in the Boraginaceae.'' Missouri BG, 2005. * Donovan S. Correll: ''Ivan Murray Johnston (1898–1960).'' In: ''Taxon'', Vol. 10, Nr. 1 (Jan., 1961), Seiten 1-8 * J. Lanjouw: ''Ivan Murray Johnston (1898–1960).'' In: ''Taxon'', Vol. 9, Nr. 7 (Sep., 1960), Seite 220
Robert Jan 'Roy' van de Hoek: ''Restoration and Recovery for Elna Bakker and Ivan Johnston. "R&R" for the Playa del Rey Frogs and Plants.'' 2005
Pteridologists Botanists active in California 1898 births 1960 deaths Harvard University alumni Pomona College alumni Scientists from California 20th-century American botanists {{US-botanist-stub