Guillermo Covas, Argentine agronomist (La Plata, Buenos Aires Province 01 February 1915 – Santa Rosa, La Pampa Province 31 August 1995)

With Benno Schnack and others made chromosome counts on over two hundred species of the vascular flora of Argentina

Found that pollen diameter: length of pollen tube ratio display taxonomic value in Angiosperms

With B. Schnack. El valor taxonomico de la relación “longitude del pistilo : volumen del grano de polen”. Darwiniana 7(1):80-90, 1945

DEVELOPED CULTIVARS (about 30)

Amaranthus sp. (6)

Avena sativa (1)

Bromus parodii (1)

Carthamus tinctorius (1)

Dactylus glomerata (1)

Eragrostis curvula (4)

Festuca arundinacea (1)

Hordeum vulgare (1)

Medicago sativa (3)

Phalaris x tuberinacea (1)

Secale cereale (1)

Sorghum almun (2)

Sorghum bicolor (1)

Vicia dasycarpa (1)

Tricepiro (x Agrotriticum) 1

Triticale (x Triticosecale) 3

DESCRIBED PLANTAE SPECIES

Acrocomia chunta 1941

Alternanthera australis 1943

Alternanthera suessenguthii 1939

Bromus parodii 1968 with Itria

Critesion californicum 1949 with Stebbins

Gaillardia cabrerae 1969

Glandularia hookeriana 1945 with Schnack

Glandularia parodii 1944 with Schnack

Glandularia perakii 1944 with Schnack

Glandularia santiaguensis 1944 with Schnack

Hordeum arizonicum 1949

Hordeum hexaploidum 1950

Hordeum parodii 1951

Hordeum stebbinsi 1949

Hordeum tetraploideum 1953

Valenzuelia dissecta 1944 with Burkart

HONORS

Covasacris Liebermann 1970 (Orthoptera)

LINKS

https://botanicaargentina.org.ar/wp-content/uploads/2018/08/obituario029.pdf (biography and bibliography; in Spanish)