id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
7234	Vries, Hugo de	Species and Varieties, Their Origin by Mutation			.txt	text/plain	184499	9259	64	of mutation assumes that new species and varieties are produced from The question of the experimental origin of new species and varieties has single individual, or a small group of plants, or a lot of seeds. In some cases his species were real plants, and the varieties seemed to saved the seeds of a single plant of each supposed variety separately. term "variety" in opposition to "species." The larger groups of forms, garden-varieties differ from their species by a single sharp character White varieties of species with red or blue flowers are the most common leaves and red fruits; its white flowered variety may be distinguished this lecture, we have seen that varieties differ from elementary species From this seed plants of a wholly different type came the next year, of variety next to the red or blue-flowering species, or thornless forms in Many large genera of hybrid garden-flowers owe their origin to species	./cache/7234.txt	./txt/7234.txt