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I12   FODDER AND PASTURE PLANTS.

but the bulk is intermediate between these two extremes. As in Red Clover, these different colours do not generally indicate that some seeds are riper than others. Alsike, like Red Clover, consists of a great number of types, which differ not only in the general appearance of the plants but also in the colour of the seed. If all the seeds from a single plant are collected, it will be found that, irrespective of age, they are all the same colour. In some plants the seeds are yellowish green, in some they are black, and in others they are green at one end and greenish black at the other. The mixed colour of an ordinary sample is therefore as a rule not due to the seed having been gathered at different stages of development, but to the different types that are mixed together.

The legal weight of a bushel is sixty pounds.

Impurities: Alsike as a rule contains more weed seeds than does Red Clover, this being due to the fact that Alsike seed is taken from the first crop, whereas Red Clover is secured from the second. The noxious weed seeds found in Alsike are Night-flowering Catch-fly, Bladder Campion, Canada Thistle, False Flax, Curled Dock and Ribgrass. Other weeds common in it are Green Foxtail, Lamb's Quarters, Sheep Sorrel, Mayweed and Chickweed. Although Black Medick cannot be considered a noxious weed, it is an undesirable impurity when it_is as common as it often is in Alsike.

WHITE SWEET CLOVER (Melilotus alba Desr.) Seed, Plate 27, Fig. 33. Other English name: Bokhara Clover.

Botanical description: Sweet Clover is biennial with a strong taproot and numerous leafy stems. The latter, which are generally much branched and spreading, reach a height of from two to five feet. When the plants are young they look like Alfalfa, but are readily recognized by their peculiar sweet odour. The leaves are similar to those of Alfalfa but not so numerous. When in bloom the plants are easily identified by their white flowers arranged in long, narrow and spike-like racemes. The flowers are small and more simple in construction than those of Red Clover and Alfalfa; they are more open and consequently give easier access to pollen-gathering insects. The pod is brown when ripe and generally contains only one or two seeds. Like that of Trefoil it falls off without breaking.


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