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Salix eriocephala, known as heart-leaved willow or Missouri River willow, is a species of willow native to a large portion of the temperate United States and Canada. [ 2 ] [ 3 ] [ 4 ] It is usually found as a narrow shrub or small tree with multiple trunks growing to a height of 20 ft (6.1 m).
The Judas tree (Cercis siliquastrum) is 10–15 m tall tree native to the south of Europe and southwest Asia. It is found in Iberia, southern France, Italy, Bulgaria, Greece, and Asia Minor, and forms a low tree with a flat spreading head. In early spring it is covered with a profusion of magenta flowers which appear before the leaves.
Its leaves are dotted with resin glands [2] [3] The leaf base is cordate (heart-shaped) [2] [3] [4] Young shoots are not hairy. [4] It is generally diploid (28 chromosomes) [2] Since many of these characteristics vary from tree to tree, ideally several of these characteristics should be noted before making a positive identification.
Hibiscus martianus, the heartleaf rosemallow or heart-leaf hibiscus, is a species of flowering plant in the family Malvaceae, native to Texas and Mexico. [ 2 ] [ 1 ] In the wild it is found growing in a variety of harsh habitats, including in canyons, on scree and gravel, and in the chaparral .
Most Catalpa are deciduous trees; they typically grow to 12–18 metres (40–60 ft) tall, with branches spreading to a diameter of about 6–12 metres (20–40 ft). They are fast growers and a 10-year-old sapling may stand about 6 metres (20 ft) tall. They have characteristic large, heart-shaped leaves, which in some species are three-lobed.
The 5 to 6 cm long, triangular foliage leaves distributed on the stem are divided into a petiole and pinnate leaf blade. The petiole is (0.5 to) 1.5 to 3.5 cm long and the rachis is 0.4 to 2 cm long. The opposite leaflets are 1 to 2 cm long and the terminal leaflets are 4 to 6 cm long. The leaf margins are serrated.
Garden centres and large box stores often stock Hoya kerrii as a single leaf cutting. The cutting's heart shape makes it a popular purchase for Valentine's Day. The leaf readily roots and remains a planted heart for many months if not years. These are largely considered novelty items as very few single leaf cuttings develop into mature plants.
It is an evergreen climber growing to 3–6 m (10–20 ft), with heart-shaped glossy leaves to 30 cm (12 in) long, and occasionally spathes of white flowers in mature plants. With a minimum temperature requirement of 15 °C (59 °F), in temperate regions it must be grown under glass or as a houseplant . [ 6 ]