Botany, defined

The chemistry of some speeies of the genus is in a eoiifused state Owing to the uneertain botanieal origin of the materials used. The following is a list of the species examined and their alkaloidal components so far known more detailed deseriptions of the better defined alkaloids are given later —... 

Generally, fibers can be defined as objects or materials that have an elongated structure, as shown in Fig. 1.1. There are other definitions according to the field they are used in, such as the textile industry, biochemistry, botany, physiology, and anatomy. With regard to fibers, "nano" refers to the diameter of the fiber. However, libers as less than 1 pm are accepted as nanolibers. In the industiy, it is acceptable to classify fibers up to 500 nm as "nano," whereas some scientists use the term "submicron."... 

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