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Title: Garden and forest. / Volume 7, Issue 334 [an electronic version]
Collection: Garden and Forest
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Garden and Forest. A tall, handsome Golden-rod, with some of its stems still in flower, grows abundantly along the river. Flowering individuals of Bidens chrysanthemoides are still more frequently to be seen. It is the most common Texas species of its genus. Near one of the large springs I collected flowering specimens of a rather pretty small-leaved Eupatorium. Andropogon glomeratus, with its panicles browned and reddened by the wind and sun, fringes the bank of the river wherever it can gain a foothold in the soil. Sometimes it shares its space with our handsome southern Maiden-hair, Adiantum Capillus-Veneris. A species of Agrostis, and one of Letaria, are also common near the water, and still growing vigorously. In a damp, warm spot close to San Felipe, a Sonchus was displaying its large yellow head of flowers to the Christmas sun and looked a Merry Christmas to everybody. Eagle Pass, Texas. E. N. Plank. Entomological. A Scale Insect on Plums. A SCALE insect which has hitherto been considered a comparatively rare species has recently attracted attention by its attacks on Plum-trees in New York state. One man from Niagara County reports that some of his Plum-trees have been killed by it, but no instances of this kind have yet come under my observation. When it occurs in such numbers as to nearly cover the bark, as shown in the accompanying illustration on this page, there can be no doubt that it is capable of injuring the trees. This illustration is from a photograph of an infested branch of the Bradshaw Plum. On the twig at the right are seen scars showing where some of the scales have been removed. The actual length and width of a full-grown scale is indicated by the cross lines in the illustration. The dimensions are usually about five millimeters by four-that is to say, about seven thirty-seconds by five thirty-seconds of an inch. At the present writing, June 20th, the scales are filled with a whitish powder, which, examined with a lens, proves to be composed of eggs. The young lice which are produced from the eggs in the spring had already issued from the old scales this season about May moth, when my attention was first called to the insect. The branches were then covered with a sticky substance like honeydew, evidently secreted by the young insects. On leaving the old scale they crawl over the branches till, finding a convenient location, they attach themselves to the bark. They seem to prefer a location on the under side of the limbs. At first they are whitish, or nearly transparent, but gradually assume the dark reddish brown color of the mature insect. Mr. L. 0. Howard, the United States Entomologist, to whom specimens were submitted for identification, states that it is a somewhat rare species known as Lecanium cerasifex. He advocates spraying with dilute kerosene emulsion when the young insects first appear in the spring. The scales are soft and easily loosened from their attachment, and might readily be brushed or scraped from the larger branches. Thus far I have seen the insect in Niagara, Monroe and Ontario Counties, indicating that it is quite widely distributed in western New York. So far as I have observed, Plums are most seriously attacked, though the insect has also been found on Apple, Pear, Maple and Cissus, showing that it has a wide range of host plants. Geneva, N. Y. S. A. Beach. New or Little-known Plants. Deutzia discolor, var. purpurascens. HIS plant was discovered in the Chinese province of Yun-nan by the French missionary Delavay, who, in i888, sent seed of it to the Museum in Paris. Last year flowers were shown in Paris by Monsieur Cornu, at an exhibition of the French Horticultural Society, from a plant growing in the garden of the Museum, and early in June a plant flowered in the Arnold Arboretum, and again during the present season. Deutzia discolor, var. purpurascens (seep. 287), is a shrub of neat, compact habit, two to three feet tall, with slender stems, thin ovate leaves scabrous on the upper surface and compact panicles of pale pink flowers. From Deutzia discolor, a species of central China not yet in our gardens, it differs in its shorter, thicker and rougher leaves, in its thicker pedicels, much broader calyx-lobes and colored petals; like that plant it has unusually broad petaloid filaments. The hardiness of the Yun-nan plant in our northern states cannot be assured yet, as the plant in the Arboretum has been wintered, as a measure of precaution, in a cold frame; but the climate of Yun-nan is of such a semi-tropical character that only plants from its high mountains can be ex Fig. 47.-Branch of Plum infested with scale, Lecanium cerasifex. pected to flourish here. From Philadelphia southward, however, this Deutzia, peculiar in the color of its abundant flowers, may be expected to become a valuable and favorite garden-plant. Plant Notes. MORINA LONGIFOLIA.-Just now this is one of the most interesting hardy plants in flower, and is at the same time one of the rarest. Mr. Orpet writes that it has proved perfectly hardy in eastern Massachusetts, having survived three winters there without protection, and it has been grown on from the seedling stage in the position it now occupies. This is the second season of its flowering there, and it is much more striking than it was last year, and the flower-spikes are stronger. When not in bloom the plant 284 [NUMBER 334
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