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The species are mostly herbaceous perennial plants 0.3–1.5 metres (1–5 feet) tall, but some are annual plants and a few are shrubs up to 3 m (10 ft) tall. An exception is the chamis de monte (Lupinus jaimehintonianus) of Oaxaca in Mexico, which is a tree up to 8 m (26 ft) tall.
In systematic virus infections leaf spots caused by viruses show a loss of green colour in leaves, due to chlorosis which is a repression of chlorophyll development. [1] Leaves may yellow and have a mottled green or yellow appearance, show mosaic (e.g. chlorotic spotting) and ringspots (chlorotic or necrotic rings). [7]
It has green to gray-green palmate leaves, with 5–12 leaflets per leaf. The leaflets are 2–6 centimetres (0.79–2.36 in) long, often sparsely covered with fine silky hairs. In spring it bears many racemes, 30 cm (12 in) long, of fragrant, soft yellow, pea-like flowers. [1] [2] Both yellow and lilac to purple flowering forms are known ...
Lupinus argenteus plant, with silvery leaves. Lupinus argenteus is a species of lupine known by the common name silvery lupine. [2] It is native to much of western North America from the southwestern Canadian provinces to the southwestern and midwestern United States, where it grows in several types of habitats, including sagebrush, grassland, and forests.
Lupinus polyphyllus, the large-leaved lupine, big-leaved lupine, many-leaved lupine, [2] blue-pod lupine, [3] or, primarily in cultivation, garden lupin, is a species of lupine (lupin) native to western North America from southern Alaska and British Columbia [4] and western Wyoming, and south to Utah and California. It commonly grows along ...
Chinese botanists say they may have an explanation for a mass die-off of plantation pine trees across the country that has baffled scientists for 50 years - it could be all in the genes.The Pinus ...
Abscission can also occur in premature leaves as a means of plant defense. Premature leaf abscission has been shown to occur in response to infestation by gall aphids. By abscising leaves that have been made host to aphid galls, plants have been shown to massively diminish the pest population, as 98% of aphids in abscised galls died. The ...
Unless treated, death can be expected to occur within 3–5 days; if they have not died by this time, they often recover. [190] Toxicity varies among animal species: 4 seeds will kill a rabbit, 5 a sheep, 6 an ox or horse, 7 a pig, and 11 a dog. Ducks have shown substantial resistance to the seeds: it takes an average of 80 to kill them.