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Life forms: (1) Phanerophyte, (2; 3) Chamaephyte, (4) Hemicryptophyte, (5; 6) Geophyte, (7) Helophyte, (8; 9) Hydrophyte. Therophyte and epiphyte are not shown. The Raunkiær system is a system for categorizing plants using life-form categories, devised by Danish botanist Christen C. Raunkiær and later extended by various authors.
Equisetum hyemale (rough horsetail [2]) is an evergreen perennial herbaceous pteridophyte in the horsetail family Equisetaceae native to Eurasia and Greenland. It was formerly widely treated in a broader sense including a subspecies (subsp. affine ) in North America, but this is now treated as a separate species, Equisetum praealtum .
Solidago rugosa, commonly called the wrinkleleaf goldenrod [2] or rough-stemmed goldenrod, [3] is a species of flowering plant in the family Asteraceae.It is native to North America, where it is widespread across eastern and central Canada (from Newfoundland to Ontario) and the eastern and central United States (Maine west as far as Wisconsin and Iowa, south to Florida and Texas). [4]
It is a type of organelle made up of two subunits – rough endoplasmic reticulum (RER), and smooth endoplasmic reticulum (SER). The endoplasmic reticulum is found in most eukaryotic cells and forms an interconnected network of flattened, membrane-enclosed sacs known as cisternae (in the RER), and tubular structures in the SER.
Xanthium strumarium (rough cocklebur, [2] Noogoora burr, [3] clotbur, common cocklebur, large cocklebur, woolgarie bur) is a species of annual plants of the family Asteraceae. [4] Some sources claim it originates in southern Europe and Asia, but has been extensively naturalized elsewhere.
Eucalyptus viminalis, commonly known as the manna gum, white gum or ribbon gum, [3] is a species of small to very tall tree that is endemic to south-eastern Australia. It has smooth bark, sometimes with rough bark near the base, lance-shaped to curved adult leaves, flower buds in groups of three or seven, white flowers and cup-shaped or hemispherical fruit.
In the Preface to the Da Capo Press Edition of the original book, Pickard asserts that "If asked to choose the scientific report which most clearly marks the beginning of the modern study of plant growth, a great many botanists would select Charles Darwin's The Power of Movement in Plants."
Eriophorum (cottongrass, cotton-grass or cottonsedge) is a genus of flowering plants in the family Cyperaceae, the sedge family. They are found in the cool temperate , alpine , and Arctic regions of the Northern Hemisphere , primarily in the middle latitudes of North America, Europe, and Asia.