Marshall Conring Johnston

U.s. botanist.

Marshall Conring Johnston (born May 10, 1930) is an American botanist who made several explorations in Mexico and specialized in plants in the family Gesneriaceae and Rhamnaceae. Johnston was born in San Antonio in the family of Theodore Harris Johnston and Lucile Mary Conring. He went on his first botanical expeditions to Mexico while still in high school during 1945–1947. On those trips he visited the northern Mexican states of Tamaulipas, Nuevo Leon, Coahuila, Durango, and Zacatecas. From 1972–1974 he made trips to Chihuahua, concentrating on desert flora. These early 1970s trips resulted i

Abbreviations: M.C.Johnst.
Occupations: botanist
Citizenships: United States
Dates: 1930-05-10T00:00:00Z
Birth place: San Antonio
Direct attributions: 84 plants, 0 fungi
Authorship mentions: 109 plants, 0 fungi

84 plants attributed, 25 plants contributed to109 plants:

Sageretia thea (Pauper's-tea) (Osbeck) M.C.Johnst. 1968
edible and medicinal plant species in the rhamnaceae family
Sageretia thea or Sageretia theezans (sageretia, mock buckthorn, sweet-plum or Chinese sweet plum) is a shrub from the family Rhamnaceae, native to southern China. It is widely used for creating bonsai.
Prosopis laevigata (Smooth Mesquite) (Humb. & Bonpl. ex Willd.) M.C.Johnst. 1962
plant species in the fabaceae family
Neltuma laevigata (formerly Prosopis laevigata), commonly known as smooth mesquite, is a species of flowering tree in the pea family, Fabaceae, that is native to Mexico and Texas. In Mexico, the species is found in the nation's the central highlands, the lowlands of southern Tamaulipas, and in parts of Oaxaca, Morelos, Puebla, and Chiapas. It grows on a variety of sites on hillslides, in depressions, and along floodplains. It has been spotted growing in the Middle East as well.
Phoradendron leucarpum (American Mistletoe) (Raf.) Reveal & M.C.Johnst. 1989
plant species in the santalaceae family
Phoradendron leucarpum is a species of mistletoe in the Viscaceae family. Its common names include American mistletoe, eastern mistletoe, hairy mistletoe and oak mistletoe. It is native to Mexico and the continental United States. It is hemiparasitic, living in the branches of trees. The berries are white and 3–6 millimeters (0.12–0.24 in). It has opposite leaves that are leathery and thick. Ingesting the berries can cause "stomach and intestinal irritation with diarrhea, lowered blood pressure, and slow pulse". This shrub can grow to 1 meter (3.3 ft) by 1 meter (3.3 ft).
Cyperus onerosus (Dune Flatsedge) M.C.Johnst. 1964
perennial plant species in the cyperaceae family
Cyperus onerosus is a species of sedge that is endemic to Andrews, Ward, and Winkler counties in Texas.
Condalia hookeri (Brazilian Bluewood) M.C.Johnst. 1962
plant species in the rhamnaceae family
Condalia hookeri, called the Brazilian bluewood, is a widespread species of flowering plant in the family Rhamnaceae, native to Texas and eastern Mexico. It is a thorny shrub or small tree reaching 6 m (20 ft) but usually much shorter. Typically it is found growing in marginal habitats such as limestone slopes, sandstone bluffs, lunettes, shell ridges, juniper-dominated woodlands, or along watercourses, often in clayey or sandy soils, at elevations from 10 to 400 m (30 to 1,300 ft). It may come to dominate an area as a thorny scrubland.
Euphorbia jejuna (Dwarf Sandmat) M.C.Johnst. & Warnock 1960
perennial plant species in the euphorbiaceae family
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Euphorbia ivanjohnstonii M.C.Johnst. 1975
plant species in the euphorbiaceae family
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Euphorbia henricksonii M.C.Johnst. 1974
plant species in the euphorbiaceae family
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Euphorbia beamanii M.C.Johnst. 1975
perennial plant species in the euphorbiaceae family
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Salix riskindii M.C.Johnst. 1981
vulnerable plant species in the salicaceae family
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Rhamnus rosei M.C.Johnst. & L.A.Johnst. 1978
plant species in the rhamnaceae family
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Kentrothamnus weddellianus (Miers) M.C.Johnst. 1973
plant species in the rhamnaceae family
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Euphorbia simulans (Mimicking Sandmat) (L.C.Wheeler) Warnock & M.C.Johnst. 1960
annual and perennial plant species in the euphorbiaceae family
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Euphorbia pinkavana M.C.Johnst. 1975
plant species in the euphorbiaceae family
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Euphorbia perennans (Perennial Sandmat) (Shinners) Warnock & M.C.Johnst. 1960
perennial plant species in the euphorbiaceae family
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Euphorbia neilmulleri M.C.Johnst. 1975
plant species in the euphorbiaceae family
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Euphorbia mcvaughiana M.C.Johnst. 1975
plant species in the euphorbiaceae family
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Euphorbia cressoides M.C.Johnst. 1975
plant species in the euphorbiaceae family
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Euphorbia correllii M.C.Johnst. 1975
plant species in the euphorbiaceae family
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Dyssodia decipiens (Bartl.) M.C.Johnst. 1962
annual and perennial plant species in the asteraceae family
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Dichondra donelliana (California Ponysfoot) Tharp & M.C.Johnst. 1961
plant species in the convolvulaceae family
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Condalia ericoides (Javelina Bush) (A.Gray) M.C.Johnst. 1962
plant species in the rhamnaceae family
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Condalia correllii (Correll's Snakewood) M.C.Johnst. 1962
plant species in the rhamnaceae family
Condalia correllii, also called Correll's snakewood, is a shrub belonging to the family Rhamnaceae. The shrub has smooth gray bark, and usually grows up to 3 m (9.8 ft) tall. The fruit is generally a deep violet-black. Leaves are linear, and it belongs to what Marshall Conring Johnston terms the linear-leaved group.
Scutia colombiana M.C.Johnst. 1974
plant species in the rhamnaceae family
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Reynosia jamaicensis M.C.Johnst. 1971
critically endangered plant species in the rhamnaceae family
Reynosia jamaicensis is a species of plant in the family Rhamnaceae. It is endemic to Jamaica.
Phyllanthus fraguensis M.C.Johnst. 1985
plant species in the phyllanthaceae family
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Phyllanthus barbarae M.C.Johnst. 1986
plant species in the phyllanthaceae family
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Lobelia henricksonii M.C.Johnst. 1982
perennial plant species in the campanulaceae family
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Emmenosperma papuanum (Merr. & L.M.Perry) M.C.Johnst. 1971
plant species in the rhamnaceae family
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Emmenosperma micropetalum (A.C.Sm.) M.C.Johnst. 1971
plant species in the rhamnaceae family
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