Spring and early summer bring wildflowers including lupine, wallflower, monkey flower, and buttercup. Common plants include satin lupine, woolly mule's-ears and pinemat manzanita. It includes a number of well-known plants including broom, lupine (lupin), gorse and laburnum. Other common plants include toyon, gooseberry, lupine, monkeyflower and coffeeberry. In northern Europe, lupin (lupine) is known as the "soybean of the north". Lupinus argenteus is a species of lupine known by the common name silvery lupine. Tidestrom lupine; Gardner's yampah and Monterey Knotweed. Mildew infection of wild lupine may be increased in denser wild lupine patches. Understory plants include woodrush, Prince's pine, lupine, and sidebells shinleaf. Size of habitat patches can also influence Karner blue butterfly abundance (see section "Wild lupine"). This is due to the susceptibility of some lupine cultivars towards "Diaporthe toxica". In addition, the researchers observed high mortality of bush lupine in the absence of EPNs. Estimates of the number of lupine species generally fall between 200 and 500. Secretary to Patrician Vetinari of Ankh-Morpork, following the death of Lupine Wonse. Breeding of sweet lupine is carried out also in Finland.