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The golden-yellow spherical flowers are prolifically produced in the leaf axils. [3] Each simple inflorescence has a diameter of 3 to 4 mm (0.12 to 0.16 in) and contains 12 to 20 flowers. After flowering linear to curved to openly coiled seed pods form with a length of 6 cm (2.4 in) and a width of 2 to 3 mm (0.079 to 0.118 in) that contain ...
Prickles on a blackberry branch. In plant morphology, thorns, spines, and prickles, and in general spinose structures (sometimes called spinose teeth or spinose apical processes), are hard, rigid extensions or modifications of leaves, roots, stems, or buds with sharp, stiff ends, and generally serve the same function: physically defending plants against herbivory.
Spiraea douglasii is a woolly shrub growing 0.91–1.83 metres (3–6 feet) tall from rhizomes, forming dense riverside thickets. [6]The leaves are 2.5–10.2 centimetres (1–4 inches) long and toothed towards the tips.
Cycads / ˈ s aɪ k æ d z / are seed plants that typically have a stout and woody trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall.
From Koehler's Medicinal-Plants. Abrus precatorius is a severely invasive plant in warm temperate to tropical regions, so much so that it has become effectively pantropical in distribution. It had been widely introduced by humans, and the brightly coloured and hard-shelled seeds had been spread by birds.
The curved hanging pods, with a bulge opposite each seed, split open into two twisted halves to reveal the hard, scarlet seeds. This tree is used for making soap, [10] and a red dye can be obtained from the wood. The wood, which is extremely hard, is also used in boat-building, making furniture and for firewood.
For germination to occur, the hard seed coat must be broken [5] to enable water to reach the embryo. Otherwise, the seeds lie dormant indefinitely. [6] The ardillo (Cojoba arborea) and the iguano (Dilodendron costaricense) possess similar bipinnate leaves with extra-fine leaflets. Though of equally impressive stature, these two trees can be ...
It blooms in summer. Each tiny, pink flower is about 1/16 of an inch wide and arranged in narrow, pyramid-shaped flowerheads that grow up to eight inches long. The flowers are followed by small, dry, brown fruit. The specific epithet tomentosa refers to the undersides of the leaves and the stems, which are covered in a dense white-woolly ...
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