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Updated: May 7, 2025
B. Simple tubular gland. C. Simple saccular gland. D. Compound tubular gland. E. Compound saccular gland. F. A compound racemose gland with duct passing to a free surface. G. Relation of food canal to different forms of glands. The serous coat has a secreting surface.
On a RECONNOISSANCE I traversed the continuation of the range, which I found to be of a flat, sandy, and rotten character, having, with the exception of the Blackbutt, all the trees and other characteristics of the sandstone country of Moreton Bay: Xylomelum, Xanthorrhaea, Zamia, Leptospermum, a new species of forest oak, which deserves the name of Casuarina VILLOSA, for its bark looks quite villous; Persoonia falcata, R. Br., a small tree about fifteen feet high, with stiff glaucous falcate leaves, and racemose inflorescence; a dwarf Persoonia, with linear leaves, the stringy-bark, and a species of Melaleuca along the creek.
South Europe. This is a straggling shrub, from 6 feet to 8 feet high, with white, racemose flowers, succeeded by bladder-like capsules. S. TRIFOLIA. North America, 1640. This is distinguished by its larger white flowers and trifoliolate leaves. It is the American Bladder Nut, but, like the latter, can hardly be included amongst ornamental plants.
This forms a compound gland which, depending on the structure of the minute parts, may be either a compound tubular or a compound saccular gland. The larger of the compound saccular glands are also called racemose glands, on account of their having the general form of a cluster, or raceme, similar to that of a bunch of grapes. Gland cells. 2. Basement membrane. 3. Blood vessel. 4. Nerve.
What are the parts common to all glands? What purpose is served by each of these parts? How do tubular glands differ in structure from saccular glands? What is a racemose gland? Why so called? Describe the nature of the secretory process. What conditions render necessary the formation of waste materials in the body? Why must these be removed?
The open ground between the beach and the swamp varied in width from half a mile to three or four miles; it was principally covered with long grass, with a belt of bushy land along the edge of the beach; the bush consisting principally of Exocarpus, with dark green oval leaves, near an inch long; two dwarf species of Fabricia, one with white, the other with pink flowers; a species of Jasminum, with rather large, white, sweet-scented flowers; and a few acacia trees, with long, linear, lanceolate, phyllodia, racemose spikes of bright yellow flowers.
This is hardy in many parts of these islands, particularly maritime districts, and is worthy of culture if only for the large racemose panicles of deliciously-scented white flowers, and peculiar metallic-green leaves. The fruit is orange-red, and only about half the size of those of our commonly cultivated species. A. UNEDO. Strawberry Tree. Ireland.
S. Bumalda is a closely allied form, if not a mere variety of S. japonica. It is of dwarf habit, with dark reddish-purple flowers. Smooth Spiraea. Siberia, 1774. A stout, spreading shrub about a yard high, with large, oblong-lanceolate, smooth, and stalkless leaves. The white flowers are arranged in racemose panicles, and produced in May. S. LINDLEYANA. Lindley's Spiraea. Himalayas.
In this species the leaves are very large, ovate-acute or elliptic, and when young thickly coated with a white woolly-like substance, but which with warm weather gradually gives way until they are of a smooth and shining green. The flowers are borne in woolly racemose corymbs, and are white succeeded by greenish-brown berries as large as marbles.
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