This section is from the book "The Gardener's Monthly And Horticulturist V18", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
M.- All generic (the first) names are spelled with a capital letter. No specific names (the second) begin with capitals unless they are proper nouns or their genitives. Thus we write Abies alba, the white spruce, but Abies Bouglasii, the spruce of Mr. Douglas.