
• (n.) A genus of bulbous plants, natives of Southern Africa, named Haemanthus, of the Amaryllis family. The juice of H. toxicarius is used by the Hottentots to poison their arrows.
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http://thinkexist.com/dictionary/meaning/bloodflower/

(from the article `Asclepiadaceae`) Common milkweed (Asclepias syriaca) and bloodflower (A. curassavica) often are cultivated as ornamentals. The butterfly-weed (A. tuberosa) of North ...
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http://www.britannica.com/eb/a-z/b/80

(Asclepias) Most of these perennials are from North America, but at least one is from South Africa and one is found in tropical America. Nearly all of these erect plants grow 2 or 3 feet high, but one, A. physocarpa (also known as Gomphocarpus physocarpus and commonly known as the Swan Plant), grows up to 6 feet high with a spread of 2 feet. This p...
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http://www.encyclo.co.uk/local/10004
Blood'flow`er noun [ From the color of the flower.]
(Botany) A genus of bulbous plants, natives of Southern Africa, named
Hæmanthus , of the Amaryllis family. The juice of
H. toxicarius is used by the Hottentots to poison their arrows.
Found on
http://www.encyclo.co.uk/webster/B/67

a showy milkweed, Asclepias curassavica, of tropical America, having brilliant orange-red flowers and smooth fruit.
Found on
https://www.infoplease.com/dictionary/bloodflower
No exact match found.