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Some apply it to the leaflets of a pinna, especially the leaflets of bipinnate or tripinnate leaves. [7] Others also or alternatively apply it to second or third order divisions of a bipinnate or tripinnate leaf. [8] It is the ultimate free division (or leaflet) of a compound leaf, or a pinnate subdivision of a multipinnate leaf.
Cyanothamnus bipinnatus is an erect shrub that grows to a height of about 1 m (3.3 ft) with pimply, glandular stems and bipinnate or tripinnate leaves. The leaves are mostly 21–50 mm (0.83–2.0 in) long and 20–60 mm (0.79–2.4 in) wide in outline with between seven and eleven leaflets, on a petiole 4–15 mm (0.16–0.59 in) long.
Globe chamomile is a straggly, branching annual plant with a strong smell, growing up to 2 ft (60 cm) tall. The bipinnate or tripinnate leaves have a fleshy midrib which widens at the base. The globular flowers are borne in paniculate flower heads. There are no ray florets and the disc florets are yellow. [4]
Parsley leaves Garden parsley is a bright green, biennial plant in temperate climates, or an annual herb in subtropical and tropical areas. Where it grows as a biennial, in the first year, it forms a rosette of tripinnate leaves 10–25 cm long with numerous 1–3 cm leaflets, and a taproot used as a food store over the winter.
The fronds are tripinnate, born on long stipes (stalks), and 2–3 m in length. The main stem of the leaf is smooth to slightly warty and covered in scales that range from tan to brown or dark brown. The frond stalks are covered with dark brown or black scales. [3]
Cyanothamnus inflexus is an erect, woody shrub that grows to a height of about 2 m (7 ft) and a width of about 3 m (10 ft). The leaves are pinnate, 6–25 mm (0.2–1 in) long and 6–35 mm (0.2–1 in) wide in outline on a petiole 3–10 mm (0.1–0.4 in) long.
Two of my favorite spring plants, almost entirely based upon their progression from bud to leaf, are beech trees and false hellebore.
Like A. glaucifolia, its leaves are tripinnate, but the new fronds of A. celsa are scaleless; those of A. glaucifolia have red-brown scales. Alsophila borbonica (syn. Cyathea borbonica) is the only species with bipinnate fronds. [2] [3]