Any of various shrubs or small trees of the southern hemisphere which have a milky sap and are often succulent; esp. (a) South African and Indian En…

A Central American tree of the genus Castilloa (formerly Castilla), or the crude rubber obtained from it.

Any of several South American trees of the genus Hevea (family Euphorbiaceae) which yield latex from which natural rubber is made; esp. the para…

= seringa, n.2

A kind of caoutchouc derived from Urceola elastica, a woody climbing plant of the family Apocynaceæ; also, the plant itself.

(Short for gutta-percha-tree n. at compounds 1a) One of the trees that yield this juice, esp. Isonandra (or Dichopsia) Gutta (N.O. Euphorbiaceæ).

The tree Isonandra Gutta (or I. Taban), that yields gutta-percha. Hence taban-tree.

Any of various shrubs or small trees with milky sap; spec. (a) any of several shrubby or tree-sized spurges, esp. Euphorbia mauritanica; (b) the…

Any of several trees used as a source of latex for making rubber (see rubber tree, n.); (in later use) spec. the evergreen Ficus elastica (family Mor…

The African rubber vine Cryptostegia grandiflora (family Asclepiadaceae), a woody twining plant containing a milky latex, widely cultivated in…

In the names of plants occurring in Honduras or products obtained from them. a natural rubber obtained from the Panama rubber tree, Castilla elastica…

A South American tree of the genus so called, belonging to the family Euphorbiaceæ, and having milky sap which provides rubber.

A Central American tree, Castilloa Tunu, Hemsley (N.O. Artocarpaceæ), which yields a non-elastic caoutchouc called tunu gum (or tunu). (Other species…

a West African plant producing a black sap which is used as rubber.

A silver-leaved shrub, Parthenium argentatum, of the family Compositæ, native to northern Mexico and adjacent parts of Texas, formerly cultivated as…

A kind of dandelion, Taraxacum koksaghyz, whose roots contain a latex used for making rubber.