Jason Richard Swallen

American botanist (1903-1991).

Jason Richard Swallen (May 1, 1903 – April 22, 1991) was an American botanist who specialized in grasses. He was curator of the Division of Grasses and later head of the Botany Department at the National Museum of Natural History. Born in Alliance, Ohio, Swallen graduated from Ohio Wesleyan University (AB 1924) and Kansas State Agricultural College (MS 1925). He spent two summers at the Michigan University Biological Station, then in 1925, was a junior botanist at the US Department of Agriculture, serving under the USDA's chief agrostologist A. S. Hitchcock and after Hitchcock's sudden death i

Abbreviations: Swallen
Occupations: explorer, entomologist, botanist, agrostologist
Citizenships: United States
Languages: English
Dates: 1903-05-01T00:00:00Z – 1991-04-22T00:00:00Z
Birth place: Alliance
Direct attributions: 211 plants, 0 fungi
Authorship mentions: 286 plants, 0 fungi

211 plants attributed, 75 plants contributed to286 plants:

Myriocladus Swallen 1951
plant genus in the poaceae family
Myriocladus is a South American genus of bamboo in the grass family. It is found in the sandstone tablelands of Venezuela, Guyana, Suriname, and northern Brazil.
Cryptochloa Swallen 1942
plant genus in the poaceae family
Cryptochloa is a genus of Neotropical plants in the grass family, widespread across much of Mexico, Central America, and South America. Species Cryptochloa capillata (Trin.) Soderstr. - French Guiana, Brazil Cryptochloa concinna (Hook.f.) Swallen - Colombia, Central America, southern Mexico Cryptochloa decumbens Soderstr. & Zuloaga - Panama Cryptochloa dressleri Soderstr. - Panama Cryptochloa soderstromii Davidse - Panama Cryptochloa strictiflora (E.Fourn.) Swallen - Central America, southern Mexico, Ecuador Cryptochloa unispiculata Soderstr. - Bolivia, Peru, Ecuador, Colombia, Brazil (Acre)
Schizachne purpurascens (False Melic) (Torr.) Swallen 1928
perennial plant species in the poaceae family
Schizachne is a genus of Eurasian and North American plants in the grass family. The only accepted species is Schizachne purpurascens, commonly called false melic. Three subspecies are recognized: Schizachne purpurascens subsp. callosa (Turcz. ex Griseb.) T.Koyama & Kawano – European and Asiatic Russia, China (Hebei, Heilongjiang, Henan, Jilin, Liaoning, Shanxi, Yunnan), Mongolia, Korea, Kazakhstan Schizachne purpurascens subsp. capillipes (Kom.) Tzvelev – Kamchatka Schizachne purpurascens subsp. purpurascens – Canada (all 10 provinces plus Yukon + NWT), United States (Alaska, Rocky Mountain
Raddiella Swallen 1948
plant genus in the poaceae family
Raddiella is a genus of Neotropical plants in the grass family native to South America, Panama and Trinidad. Species Raddiella esenbeckii (Steud.) C.E.Calderón ex Soderstr. - Brazil, Bolivia, Colombia, Venezuela, French Guiana, Suriname, Guyana, Trinidad, Panama Raddiella kaieteurana Soderstr. - Venezuela (Bolívar), Suriname, Guyana, Brazil (Pará) Raddiella lunata Zuloaga & Judz. - Rondônia, Mato Grosso Raddiella malmeana (Ekman) Swallen - Pará, Mato Grosso Raddiella minima Judz. & Zuloaga - Pará, Mato Grosso Raddiella molliculma (Swallen) C.E.Calderón ex Soderstr. - Caquetá Raddiella
Piresia Swallen 1964
plant genus in the poaceae family
Piresia is a genus of South American plants in the grass family. Species Piresia goeldii Swallen - French Guiana, Suriname, Venezuela (Amazonas), Colombia (Amazonas), Ecuador, Peru (Loreto), Brazil (Pará, Amazonas, Rondônia) Piresia leptophylla Soderstr. - Colombia (Amazonas), Ecuador, Peru, Brazil(Pernambuco, Amazonas, Bahia), Trinidad and Tobago Piresia macrophylla Soderstr. - French Guiana, Peru (San Martín, Loreto), Brazil (Amazonas, Rondônia, Acre) Piresia palmula M.L.S.Carvalho & R.P.Oliveira - Brazil (Bahia) Piresia sympodica (Döll) Swallen - Venezuela, French Guiana, Suriname, Guyana,
Chrysochloa Swallen 1941
plant genus in the poaceae family
Chrysochloa is a genus of African plants in the grass family Poaceae. Species Chrysochloa orientalis (C.E.Hubb.) Swallen – Democratic Republic of the Congo, Tanzania, Kenya, Uganda Chrysochloa subaequigluma (Rendle) Swallen – tropical Africa from Senegal to Malawi
Acostia Swallen 1968
plant genus in the poaceae family
Acostia is a genus of South American plants in the grass family. The only known species is Acostia gracilis, found only in Ecuador. It is listed as an endangered species. The genus name of Acostia is in honour of Misael Acosta Solís (1910–1994), an Ecuadorian naturalist. The Latin specific epithet of gracilis means "slender". Both the genus and the species were first described and published in Bol. Soc. Argent. Bot. Vol.12 on page 109 in 1968.
Reitzia Swallen 1956
plant genus in the poaceae family
Reitzia is a genus of plants in the grass family. The only known species is Reitzia smithii, native to southeastern Brazil (Santa Catarina, São Paulo, Rio de Janeiro).
Agrostis hooveri (Hoover's Bentgrass) Swallen 1949
perennial plant species in the poaceae family
Agrostis hooveri is a species of grass known by the common name Hoover's bent grass. It is endemic to California, where it is known only from western San Luis Obispo and Santa Barbara Counties.
Muhlenbergia minutissima (Annual Muhly) (Steud.) Swallen 1947
annual plant species in the poaceae family
Muhlenbergia minutissima is a species of grass known by the common name annual muhly. It is native to North America.
Festuca ligulata (Guadalupe Fescue) Swallen 1932
perennial plant species in the poaceae family
Festuca ligulata is a species of grass known by the common name Guadalupe fescue. There is one population each in Texas and Coahuila. This rhizomatous perennial grass forms clumps of stems up to 80 centimeters tall. The inflorescence is up to about 16 centimeters long and has erect or spreading branches with spikelets near the ends. Flowering occurs in August and September. One population of this rare grass can be found in Big Bend National Park in Texas in the United States. This population has no more than about 150 individuals. The other, a larger population, is in Maderas del Carmen in
Acostia gracilis Swallen 1968
perennial plant species in the poaceae family
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Trichoneura elegans (Silveus' Grass) Swallen 1932
annual plant species in the poaceae family
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Sporobolus silveanus (Silveus' Dropseed) Swallen 1941
perennial plant species in the poaceae family
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Puccinellia andersonii (Anderson's Alkaligrass) Swallen 1944
perennial plant species in the poaceae family
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Poa mulleri Swallen 1940
perennial plant species in the poaceae family
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Paspalum atratum Swallen 1967
perennial plant species in the poaceae family
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Panicum sublaeve Swallen 1950
annual plant species in the poaceae family
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Panicum hispidifolium Swallen 1950
annual plant species in the poaceae family
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Panicum furvum Swallen 1950
perennial plant species in the poaceae family
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Panicum fontanale Swallen 1966
perennial plant species in the poaceae family
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Panicum deciduum Swallen 1957
perennial plant species in the poaceae family
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Panicum bartlettii Swallen 1934
perennial plant species in the poaceae family
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Muhlenbergia sinuosa (Marshland Muhly) Swallen 1947
annual plant species in the poaceae family
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Muhlenbergia × involuta (Canyon Muhly) Swallen 1932
perennial plant hybrid species in the poaceae family
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Muhlenbergia fragilis (Delicate Muhly) Swallen 1947
annual plant species in the poaceae family
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Festuca parciflora Swallen 1948
vulnerable and perennial plant species in the poaceae family
Festuca parciflora is a species of grass in the family Poaceae. It is found only in Ecuador.
Festuca breviglumis Swallen 1950
perennial plant species in the poaceae family
Festuca breviglumis is a species of grass in the family Poaceae. The name was published in 1950 in the US.
Danthonia rhizomata Swallen 1961
perennial plant species in the poaceae family
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Calamagrostis insperata (Reed Bent Grass) Swallen 1935
perennial plant species in the poaceae family
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