The skin is without scales except along the lateral line, and is covered with venomous spines and wartlike glands which give it a knobby appearance.
Pyrite, which is now oxidized to goethite, occurs within the calcite cement of these concretions as microscopic crystals and very small, knobby concretions.
These magnolias produce a reddish-green, knobby aggregate fruit about 2 in long that matures and opens in early autumn.
Larches are often used in bonsai culture, where their knobby bark, small needles, fresh spring foliage, and especially autumn colour are appreciated.
They also share characteristics with mountain bicycles in that they utilize knobby tread tires for traction and, increasingly, disc brakes.
It is generally glandular, with knobby glands most easily seen on the leaves, and often hairy to woolly.
The leaves are thick, fleshy, hairless, deep shiny green, and club-shaped, knobby, or finger-like, clumped tightly together.
This is a perennial herb growing from a rhizome with thick, knobby tips.
