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Urban planners and tree experts have tried for decades to keep streets and sidewalks clear of maple spinners, seed pods and fallen fruit, but these efforts may be leading to an increase in allergies.
Botanical sexism is a term that describes the preferential planting of cloned male plants in urban areas because they do not produce fruits and flowers that litter the landscape. However, because males produce pollen, areas with only male plants can have high pollen in the air and, therefore, be inhospitable to people with pollen allergies.
The upper branches of the tree tend to droop. [6] The tree's pinnately compound leaves measure 8–25 cm long × 4–9 cm wide and are made up of 19–41 alternate leaflets. [6] [10] Male and female flowers occur on separate plants . [6] Flowers are small, white and borne profusely in panicles at the ends of the drooping branches. [10]
They can be found growing in any of the following forms, all having woody stems: as a climbing vine that grows on trees or some other support; as a shrub up to 1.2 metres (4 feet) tall; as a trailing vine that is 10–25 centimetres (4–10 inches) tall; The deciduous leaves of T. radicans are trifoliate with three almond-shaped leaflets. [5]
It is a small to medium-size tree (unlike most other Gnetum species, which are lianas), growing to 15–22 metres tall and with a trunk diameter of up to 40 cm (16 in). [5] In addition to the tree form, there are also varieties that includes shrub forms (brunonianum, griffithii, and tenerum). [ 4 ]
Botanical Name:Nyssa sylvatica Sun Exposure: Full sun to part shade Soil Type: Moist, well-draining, average Soil pH: Acidic (5.5-6.5) USDA Hardiness Zone: 3 to 9 Black gum, or tupelo, is an ...
The striped maple is a small deciduous tree growing to 5–10 meters (16–33 ft) tall, with a trunk up to 20 cm (8 in) in diameter. [3] The shape of the tree is broadly columnar, with a short, forked trunk that divides into arching branches which create an uneven, flat-topped crown. [citation needed]
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