Forest Starr & Kim Starr: Balloon plant - Asclepias physocarpa
Family: Apocynaceae
Other names: Balloon Cotton Bush, Balloonplant, Cotton Bush, Narrow-leaved Cotton Bush

Gomphocarpus physocarpus, commonly known as balloonplant, balloon cotton-bush, bishops balls, nailhead, or swan plant, is a species of milkweed. The plant is native to southeast Africa, but it has been widely naturalized. It is often used as an ornamental plant. The name "balloonplant" is an allusion to the swelling bladder-like follicles which are full of seeds. []

Images: Forest Starr & Kim Starr, CC-BY Creative Commons Attribution License 3.0
Text: Wikipedia
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Balloon plant - flower buds (Asclepias physocarpa)
Balloon plant - flower buds (Asclepias physocarpa)
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Balloon plant - flower buds (Asclepias physocarpa)
Balloon plant - flower buds (Asclepias physocarpa)
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Balloon plant - flowering habit (Asclepias physocarpa)
Balloon plant - flowering habit (Asclepias physocarpa)
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Balloon plant - flowers (Asclepias physocarpa)
Balloon plant - flowers (Asclepias physocarpa)
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Balloon plant - flowers (Asclepias physocarpa)
Balloon plant - flowers (Asclepias physocarpa)
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Balloon plant - flowers (Asclepias physocarpa)
Balloon plant - flowers (Asclepias physocarpa)
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Balloon plant - flowers (Asclepias physocarpa)
Balloon plant - flowers (Asclepias physocarpa)
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Balloon plant - flowers (Asclepias physocarpa)
Balloon plant - flowers (Asclepias physocarpa)
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Balloon plant - flowers (Asclepias physocarpa)
Balloon plant - flowers (Asclepias physocarpa)
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Balloon plant - flowers and leaves (Asclepias physocarpa)
Balloon plant - flowers and leaves (Asclepias physocarpa)
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Balloon plant - flowers and leaves (Asclepias physocarpa)
Balloon plant - flowers and leaves (Asclepias physocarpa)
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Balloon plant - fruit (Asclepias physocarpa)
Balloon plant - fruit (Asclepias physocarpa)
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Balloon plant - fruit (Asclepias physocarpa)
Balloon plant - fruit (Asclepias physocarpa)
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Balloon plant - fruit (Asclepias physocarpa)
Balloon plant - fruit (Asclepias physocarpa)
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Balloon plant - fruiting habit (Asclepias physocarpa)
Balloon plant - fruiting habit (Asclepias physocarpa)
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Balloon plant - habit (Asclepias physocarpa)
Balloon plant - habit (Asclepias physocarpa)
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Balloon plant - habit (Asclepias physocarpa)
Balloon plant - habit (Asclepias physocarpa)
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Balloon plant - seeds and pappus (Asclepias physocarpa)
Balloon plant - seeds and pappus (Asclepias physocarpa)
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Balloon plant - seeds and pappus (Asclepias physocarpa)
Balloon plant - seeds and pappus (Asclepias physocarpa)
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Balloon plant - seeds and pappus (Asclepias physocarpa)
Balloon plant - seeds and pappus (Asclepias physocarpa)