The character of the appendage is evidently the most reliable means of distinguishing species, but even this may vary in some instances, so that the number and arrangement of the antheridia and androphorous cells is not always a safe guide.

The quest here is one of several around the world, to perennialize everything from sorghum to chickpeas to sunflowers.

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There's the “certamen” or contest, similar, Mrs. Nicholls said, to a television quiz show. Students compete against other schools in mythology, history and trivia. Anyone can enter - all they have to know is some Latin.