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Theoretical rise and run of stringer, placement of square, marking of tread and rise, dropping the stringer, ABC=90°, total rise of stringer = 2R-T, total run of stringer = 2AB. Stairs usually consist of three components. They are the stringer, the tread and the riser. The stringer is the structural member that carries the load of the ...
Chart illustrating leaf morphology terms. The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1]
Interior of a Boeing/Stearman PT-17 showing small channel section stringers. In engineering, a longeron or stringer is a load-bearing component of a framework. The term is commonly used in connection with aircraft fuselages and automobile chassis. Longerons are used in conjunction with stringers to form structural frameworks. [1]
D. moroides is a straggly perennial shrub, usually flowering and fruiting when less than 3 m (10 ft) tall, but it may reach up to 10 m (33 ft) in height. It is superficially similar to Dendrocnide cordifolia, with the most obvious difference being the point of attachment of the petiole to the leaf blade—where D. moroides is peltate, i.e. the stalk attaches to the underside of the leaf and ...
A hastula is a flap of tissue borne at the insertion of the blade on the petiole on the upper, lower, or both leaf surfaces [8] [9] Bifurcate fronds may also develop. The extinct Devonian seed plant Cosmosperma polyloba demonstrated the early evolutionary diversification of frond branching patterns, presenting both bifurcate and trifurcate types.
It is a deciduous woody vine growing to 30 m tall or more given suitable support, attaching itself by means of numerous small branched tendrils tipped with sticky disks. The leaves are simple, palmately lobed with three lobes, occasionally unlobed or with five lobes, or sufficiently deeply lobed to be palmately compound with (usually) three leaflets; the leaves range from 5 to 22 cm across.
The smooth or hairy leaf blade is simple or one to two-pinnate. The leaflets are lobed three to eleven times. The leaf margin is smooth to roughly serrated. The lower leaves are 38 to 127 centimetres (15 to 50 inches) long and 25 to 64 cm (10 to 25 in) inches wide. The upper leaves are 8 to 40 cm (3 to 15 + 1 ⁄ 2 in) long and 3 to 20 cm (1 to ...
There are five to nine conspicuous veins over the length of the leaf. [5] The flowers are small, greenish-brown with purple stamens , produced in a dense spike 5–15 cm (2–6 in) long on top of a stem 13–15 cm (5–6 in) tall and rarely to 70 cm (28 in) tall.