. Notes on the life history of British flowering plants. Botany; Plant ecology. LILIACE^ 421 formed. In September another series of roots grow, not downwards, but outwards ; these are thin, they have no power of contraction, and simply absorb nourish- ment like those of ordinary plants. From November to April is the winter rest, and in April another circle of stout contracting roots is produced, which again drag the bulb downwards. Eventually it comes to lie at a depth of 10-15 ; A. oleraceum.—The flowers, according to Bentham, are pale brown; Knuth describes them as at first greenish
. Notes on the life history of British flowering plants. Botany; Plant ecology. LILIACE^ 421 formed. In September another series of roots grow, not downwards, but outwards ; these are thin, they have no power of contraction, and simply absorb nourish- ment like those of ordinary plants. From November to April is the winter rest, and in April another circle of stout contracting roots is produced, which again drag the bulb downwards. Eventually it comes to lie at a depth of 10-15 ; A. oleraceum.—The flowers, according to Bentham, are pale brown; Knuth describes them as at first greenish white, and gradually becoming rose colour. They are protandrous, and usually few in number ; some are replaced by bulbils. A. Schoenoprasum (Chives ).^—A very rare plant in Britain; found in rocky pastures in a few counties. This is one of the species with fistular leaves—an arrange- ment which is useful as a protection against undue transpiration, and also probably against wind. A. triquetrum is a South west European species which occurs in Britain only in Corn- wall. In the other British species the 3 inner stamens are flattened and three - cleft (Fig. 338, c). I have seen no suggestion as to the purpose of this curious arrangement. A. sphserocephalum (Fig. 338) has a globular, dense umbel. Britain only on St. Vincent's Eocks, Bristol. Fia. 338.—Allium spJuerocephalmn. Figure of plant reduced, a, flower ; b, an outer, c, an inner stamen ; J, pistil; enlarged. It is found in. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lubbock, John, Sir, 1834-1913. London, New York, Macmillan and Co. , Ltd.
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