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Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
Each palmate leaf is made up of 6 to 8 leaflets about a centimeter long and a few millimeters in width. The inflorescence is a petite spiral of flowers a few centimeters long just arising past the basal disc of leaves. Each flower is 6 to 8 millimeters long and bright blue in color, generally with a white or yellowish spot on its banner.
Lupinus flavoculatus is a small, hairy annual herb growing up to about 20 centimetres (7.9 in) tall. Each palmate leaf is made up of 7 to 9 leaflets 1 or 2 centimeters long. The inflorescence is a small, dense spiral of flowers each roughly a centimeter long. The flower is bright to deep blue with a yellowish spot on its banner.
Underside of leaf. The basal leaves are much more numerous with the 7–30 centimeter long leaf stems [3] spreading in every direction to from a rounded tuft of leaves. [2] Each leaf is made up of 8–13 small leaflets, [3] each leaflet is 4–8 centimeters long and rarely less than 10 millimeters wide. [4]
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.
Lupinus excubitus is a small shrub with gray-green foliage. The fan-shaped leaves are borne on the stem and may be clustered at the base. Generally covered with silvery hairs, each is made up of 7 to 10 narrow 5–50 millimetres (0.2–2.0 in) leaflets. The raceme inflorescence is a tall stalk of rich purple flowers, each with a bright yellow spot.
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 angustifolius is a species of lupin known by many common names, including narrowleaf lupin, [1] narrow-leaved lupin [2] and blue lupin. It is native to Eurasia and northern Africa and naturalized in parts of Australia and North America.