Abstract
Solanum americanum is a new annual shrubby plant seen recently in fields and gardens of Baghdad city. A new species is described and illustrated, inhabit wet or semi dry places and have consequently a mesophytic habit. A detailed morphological study of the stems, leaves, Inflorescence, flower, male and female reproductive organs and fruits has been done, revealed several interesting taxonomic characteristics, which have not previously been studied in Iraq. Also, anatomical studies reveals constant taxonomical characteristics such as the presence of anthocayanine in outer row of epidermis, distinct chlorenchyma in whole cortex, the wide pith of stems, and presence of distinct mesophyll that differentiated into palisade layer and spongy layer in leaves, amphistomatic bearing anomocytic stomatal complexes that are significant and constant characteristics in species studied.
Highlights
The family Solanaceae is one of large families with around 2000-3000 species in 90 different genera, grow in most temperate and tropical regions, with plants coming from Australia and Central and South America
The aim of present study was to provide complete information on this new species morphology and anatomy that grown in Baghdad city
Regular, thin walled, mostly similar in diameter and covered with thin cuticle layer in time Mesophyll consisted of two palisade and spongy layers
Summary
The family Solanaceae is one of large families with around 2000-3000 species in 90 different genera, grow in most temperate and tropical regions, with plants coming from Australia and Central and South America. It is consist mainly of herbs, with a few shrubs and trees, and contains many of most well-known food plants, like. It is contains many common garden ornamental plants, including Petunias, Browallia and Salpiglossis. The aim of present study was to provide complete information on this new species morphology and anatomy that grown in Baghdad city
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