NationMaster - Encyclopedia: Alexandre de Cassini

Count Alexandre Henri Gabriel de Cassini (1781-1832) was a famous French botanist and naturalist, who specialised in the sunflower family (Asteraceae) (then known as family Compositae). Botany is the scientific study of plant life. ... Natural history is an umbrella term for what are now usually viewed as a number of distinct scientific disciplines. ... Genera many, see list The aster or sunflower family (Family Asteraceae or, alternatively Family Compositae) is a taxon of dicotyledonous flowering plants. ...

He was the youngest of five children of Jean-Dominique Comte de Cassini (1748-1845), who had succeeded his father as the director of the Paris Observatory, famous for completing the map of France. He was also the grandnephew of famous Italian-French astronomer, Giovanni Domenico Cassini, discoverer of Jupiter's Red Spot and the Cassini division in the Saturn ring. Jacques Dominique, comte de Cassini (June 30, 1748 – October 18, 1845) was a French astronomer, son of César-François Cassini de Thury. ... The Paris Observatory (in French, Observatoire de Paris or Observatoire de Paris-Meudon) is the foremost astronomical observatory of France, and one of the largest astronomical centers in the world. ... An astronomer or astrophysicist is a scientist whose area of research is astronomy or astrophysics. ... Giovanni Domenico (Jean-Dominique) Cassini Giovanni Domenico Cassini (June 8, 1625 - September 14, 1712) was an Italian-French astronomer and engineer. ...

The genus Cassinia was named in his honor by the botanist Robert Brown . Bold textbuttRobert Brown (December 21, 1773 - June 10, 1858) is acknowledged as the leading British botanist to collect in Australia during the first half of the 19th century. ...

His auctorial abbreviation in botany is Cass. Botany is the scientific study of plant life. ...

He has named many flowering plants and new genera in the sunflower family (Asteraceae), many of them from North America. He published 65 papers and 11 reviews in the [Nouveau] Bulletin des Sciences par la Société Philomatique de Paris between 1812 and 1821. Jump to: navigation, search Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also angiosperms) are a major group of land plants. ...

In 1825, A. Cassini placed the North American taxa of Prenanthes in the new genus Nabalus, now considered a subgenus of Prenanthes (family Asteraceae, tribe Lactuceae).

In 1828 he named Dugaldia hoopesii for the Scottish naturalist Dugald Stewart (1753-1828).

Some genera (originally) named by him :

Brachyscome (1816)
Carphephorus
Dracopis Cassini (Coneflower)
Emilia Cassini (Tasselflower)
Eurybia (Cassini) S.F. Gray
Euthamia (Nuttall) Cassini 1825 (Flat-topped Goldenrod)
Facelis Cassini
Guizotia Cassini (Niger-seed)
Helianthus pauciflorus Nuttall ssp. pauciflorus, (Stiff Sunflower), also reported as by Helianthus laetiflorus var. rigidus and H. rigidus (Cassini) Desf.
Heterotheca Cassini (Camphorweed, Golden-aster)
Ixeris (Cassini) Cassini
Ligularia Cassini
Pallenis Cassini
Pluchea Cassini (Marsh-Fleabane)
Sclerolepis Cassini (Sclerolepis)
Youngia Cassini (Youngia)

Genera See text Coneflower is a flowering plant in family Asteraceae, a member of genus Rudbeckia. ... A Tasselflower is a member of Genus Emilia, a flowering plant of Family Asteraceae. ... Pallenis Categories: Plant stubs | Asteraceae ...

References

Cassini, A. H. G. 1813: Cassini, Henri. 1813. Observations sur le style et le stigmate des synanthérées. Journal de Physique, de Chemie, d'Histoire Naturelle et des Arts 76: 97--128, 181--201, 249-75.
King, Robert M., Paul C. Janaske, & David B. Lellinger (compilers). 1995. Cassini on Compositae II. Monographs in Systematic Botany from the Missouri Botanical Garden 54: [i]-xii, 1-190.

Categories: Botanists

Results from FactBites:

Biografia di G.D. Cassini (2342 words)
	Cassini reported his first results in the 1656 Specimen observationum Bononiensum … in D. Petronij templo, dedicated to the Queen Christine of Sweden, announcing that the motion of the Sun was “really” not uniform during the year (according to the Second Kepler’s Law) and not “apparently” as Ptolemaic-Aristotelian and Tychonic systems of the World required.
	Cassini continued to be particularly interested in comet studies and he was able to foresee the path of two new comets, appeared on 1664 and on 1665, which he observed with Christine of Sweden, so opening the way to Halley’s works on comet orbits.
	The Cassini's dynasty ends with Cassini's IV son, Alexandre, jurist and botanist, who had been removed from the direction of the Observatoire, was arrested and imprisoned during the French revolution.

Benjamin Vaughan on the Washington Meridian, 1811 (8180 words)
	Pene, [Jean Dominique] Cassini, and others in their great Neptune Français [1693], continued to obey its injunctions at the close of the seventeenth century, as did M [Jean-Baptiste] d'Anville (the King's geographer) even in his separate map of France, divided into provinces and generalities which was published so late as 1780.
	M Cassini had an opportunity of trying this experiment afterwards in the south of France in the winter of 1739-1740, with a little variation, for the observers were stationed on 2 heights, while the pounds of powder were fired from the top of a church in a valley below.
	M de la Condamine and his colleagues had no opportunity to make experiments at the equator as to longitudes, since they were released, while there, from the last part of their commission which related to that object.

More results at FactBites »

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