Century Dictionary and Cyclopedia
- n. Plural of siphonium.
- n. A genus of pear-shaped, silicious, lithistid sponges with a long or short peduncle, the interior having a deep cloaca and numerous arched canals. It abounds in the Cretaceous rocks.
GNU Webster's 1913
- n. (Bot.) A former name for a euphorbiaceous genus (Hevea) of South American trees, the principal source of caoutchouc.
“(Ficus elastica of Asia) nor aeuphorbia (Siphonia elastica), as in”
“ The following are the chief rubber-producing trees: _Siphonia elastica_, or _Hevea brasiliensis_, Amazon forests, yields Pará rubber;”
“There were many handsome large-leafed _pacová_, somewhat resembling banana palms; also quantities of _Siphonia elastica_, although these were not quite so plentiful as farther south nor the trees so high.”
“(_Siphonia elastica_), which was extraordinarily plentiful in belts or zones along the courses of rivers in that region.”
“Among the other more important trees which produce rubber may be mentioned the _Siphonia brevifoglia_, the _Siphonia brasiliensis_,”
“A similar wealth of _Siphonia elastica_ appeared to be on the opposite bank, where the forest was luxuriant.”
“Immense quantities of _Siphonia elastica_ were there to be seen on both sides of the stream in the forest, which was getting more and more luxuriant as we proceeded on our journey farther north.”
“We were then in a region extraordinarily rich in rubber; quantities of _Siphonia elastica_ trees were to be seen.”
“_Siphonia rhytidocarpa_, and the _Siphonia lutea_, all found chiefly in the State of Para.”
“At present we shall be chiefly interested in the seringueira (_Siphonia elastica_).”
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