For the 835,580 species in the Class Magnoliopsida (Dicotyledons), we average 4.30 observations each in our database; for the Fleur De Cassier, we have 755 observations. Compared to other species in this Class, this species is extremely common.
A two-sample t-test can be used to determine whether the trend in observations of the Fleur De Cassier is the same as the trend in observations of Magnoliopsida. Is this species just as common, as a proportion of all observations, as it once was? The answer is no, changes in observation rate of this species significantly differ from changes in observation rate of its Class. (t=13.405, p<0.001)
How do observation rates of the Fleur De Cassier differ from those of Magnoliopsida? To answer this, we examined the percentage of observerations for Magnoliopsida that were observations of the Fleur De Cassier each year. We then correlated this percentage with observation year. If observations of the Fleur De Cassier are becoming more common relative to other species of Magnoliopsida, the correlation should be positive, but if it is becoming less common, the correlation should be negative. In fact, the correlation is negative (r=-.45), with a negative slope (m = -.000), suggesting that the Fleur De Cassier may be in decline relative to other species of Magnoliopsida. This correlation is statistically significant. (F = 101.66, p<.05)
The scatter chart to the right shows the percentage of all observations for Magnoliopsida each year that were observations of the Fleur De Cassier.
Mostly trees or shrubs. Leaves mostly bipinnate.Corolla usually not showy, actinomorphic, sympetalous, the lobesvalvate.Stamens 10-numerous, often monadelphous, showy. Pollen released in monads, tetrads, or polyads. Seeds with u-shaped line (pleurogram) present. [Carr]
Genus Acacia:
Trees, shrubs, rarely herbs, often prickly or spinose. Leaves bipinnate; leaflets small and numerous or leaves reduced to phyllodes; petiolarglands often present; stipules generally spinescent.Inflorescencecylindricspike or globosehead; peduncle solitary axillary or fasciculate or
paniculate at the end of branches; bracts often two, scale like, situated on the peduncle at various levels. Flowers small, 3-5-merous, bisexual or plantspolygamous.Calyxcampanulate, dentate, lobed or polysepalous.Petals usually more or less united, rarely absent. Stamensindefinite, free or shortly and irregularly connate at the base; anthers small, eglandular.Ovarysessile or stipitate, with
2 or more ovules. Fruitovate to linear, straight, arcuate or contorted, membranous to woody, rarely articulated or moniliform.Seed large, with a filiformfunicle or fleshy aril.
A genus with about 900 species; distributed mainly in tropics and subtropics, especially in Africa and Australia.[1]
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