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In addition to the species figured and those briefly described, we would call attention to a few others that may come under the rambler's notice. In boggy ground and sphagnum beds he may be so fortunate as to find the rare Bog Orchis (Malaxis paludosa), a small plant with tiny yellow-green flowers (July to September), and the scanty leaves producing bulbils from their edges which grow into new plants. In similar situations in the eastern counties he may even find the larger but much rarer Fen Orchis (Liparis loeselii). A singular species, to be found chiefly in beechwoods throughout the country, is the Birds'-nest Orchis (Neottia nidus-avis), so called from the peculiar character of its roots, which are stout and juicy, and woven into a resemblance to a nest. The whole plant is of a pretty uniform brown tint both stem and flowers. There are no leaves, for the plant lives upon decaying vegetable matter, and has no necessity to bother about chlorophyll. It is botanically known as a saprophyte. Flowers June and July. The very distinct Twayblade (Listera ovata) is sure to be encountered in woods and pastures. Its two leaves are very broad, and appear to be opposite, but are not really so. The flowers are small and greenish ; they appear in May. There is a singular fact in connection with the fertilization of this plant that should be noted. The pollen-masses are dry and friable, and would not be likely to adhere to insects. But if the rostellum be touched ever so lightly, it instantly exudes a gummy fluid, which enables the pollen to stick tightly to the insect causing the irritation. Examine the flower with your lens, irritate the rostellum by prodding it with the point of a hair from your own head, and note what you observe. At the end of Summer in dry pastures there may be found a slender plant with a twisted spike of fragrant white flowers. These flowers are very small, enclosed each in a hood-like bract. It is the Autumnal Lady's-tresses (Spiranthes