* Anthoxanthum. l. 83. Vernal grass. Two males, two females. The other grasses have three males and two females. The flowers of this grass give the fragrant scent to hay. I am informed it is frequently viviparous, that is, that it bears sometimes roots or bulbs inst ad of seeds, which after a time drop off and strike root into the ground. This circumstance is said to obtain in many of the alpine grasses, whose seeds are perpetually devoured by small birds. The Festuca Dumetorum, sescue grass of the bushes, produces bulbs from the sheaths of its straw. The Allium Magicum, or magical onion, produces onions on its head, instead of seeds. The Polygonum Viviparum, viviparous bistort, rises about a foot high, with a beautiful spike of flowers, which are succeeded by buds or bulbs, which fall off and take root. There is a bush frequently seen on birch-trees, like a bird's nest, which seems to be a similar attempt of nature, to produce another tree; which falling off might take root in spongy ground.
There is an instance of this double mode of production in the animal kingdom, which is equally extraordinary: the same species of Aphis is viviparous in summer, and ovi∣parous in autumn. A. T. Bladh. Amoen. Acad. V. 7.
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