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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.
Leaves of most plants include a flat structure called the blade or lamina supported by a network of veins, a petiole and a leaf base; [1] but not all leaves are flat, some are cylindrical. [ citation needed ] Leaves may be simple, with a single leaf blade, or compound, with several leaflets .
This is an incomplete list of plants with trifoliate leaves. Trifoliate leaves (also known as trifoliolate or ternate leaves) are a leaf shape characterized by a leaf divided into three leaflets. Species which are known to be trifoliate are listed here.
The leaves are tripinnate, finely divided and lacy, and overall triangular in shape. The leaves are 5–15 cm (2–6 in) long, [5] bristly and alternate in a pinnate pattern that separates into thin segments. The flowers are small and dull white, clustered in flat, dense umbels. The umbels are terminal and about 8–15 cm (3–6 in) wide.
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
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.
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 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.