264 PLANT NAMES AND SYNONYMS 



142J). OLDENLAjNDIA, L. Bluets. Rubiaceae. 



Named for H. B. Oldenland, Danish botanist. Syn. Hed- 

 yotes, in part. Small herbs. About 175 species, warmer 

 regions, especially of Asia; 4 in U. S. 



a. 0. umbellata L, (H. umbellataLam.). India. Shaya, Chaya, 

 Indian Madder plant. Lecwes expectorant. Boot, vShaya root, 

 Chay or Choy root, Indian Madder; yields a valuable red dye. 



1430. OLE A, L. - - Olive. - Oleaceae. 

 The classical name, whence our word ' 'oil" . Trees or shrubs. 



About 36 species, C)ld World and Oceanica. 



a. 0. Europaea L. (O. Oleaster HofFm., O. communis Steud., O. 

 officinarum Cranz., O. lancifolia Moench) Southwestern Asia, 

 now widely cultivated in sub-tropical countries. Olive. The 

 wild tree is called Oleaster; numerous varieties are distinguish- 

 ed, the names being Spanish, Italian or French. Leaves and 

 bark febrifuge. Fruit esculent, source of Olive oil (sweet oil); 

 Oleum Olivae, U. S. P. 



1431. OLEARIA, Moench 1802. Daisy tree, etc. Compositae. 

 Syn. Eurybia, Cass. 1820. Shrubs, some trees or herbs. 



About 85 species, Australia and New Zealand. 



a. 0. argophjila F. Muell. (E. argophylla Cass.). Tasmania. 

 Silver-leaved Musk tree. Foliage has a musky odor. (b. ) 0. 

 stellulata DC. (E. lirata DC. ), Tasmania, is called Daisy tree. 



1432. OLIGOMERIS, Cambess. Oligomeris. Resedaceae. 



From Greek, "few parts". Herbs or sub-shrubs. About 5 

 species, mostly of S. Africa; 1 in U. S. 



1433. OLNEYA, Gray. Tesota, etc. Papilionaeeae. 



Named for Stephen T. Olney, botanist of Rhode Island. A 

 small tree, one species, 0. Tesota Gray, southwestern U. S., 

 called Iron wood (Arbol de hierro)and Tesota. 



1434. OMPHALEA, L. Ouabe, etc. Euphorbiaceae. 



From Greek, "navel" plant, alluding to form of anthers. 



Climbing shrubs or small trees. About 12 species, tropical 

 America, one in Madagascar. 



a. 0. didndra L. West Indies. Ouabe, West Indian Cob-nut; 



Fr. Noisettier. Seeds edible, source of Ouabe oil. 



b. 0. oleifera Hemsley. Central America. Seeds source of Tam- 



bor oil which is purgative like Castor oil. 



1435. 0MPHAL{)DES, Moench. Venus' Navel wort .Boraginaeeae. 

 * From Greek, "navel like", alluding to shape of seeds. Syn. 



Omphalium. Herbs. About 20 species, northern hemisphere; 

 2 in U. S. 



1436. 6NAGRA, Adans. Evening Primrose. Onagraeeae. 



From Greek, "wild ass". Syn. Oenothera (Kew), in part. 

 Herbs with yellow nocturnal flowers. About 12 species, chiefly 

 North America; 8 in U. S. 



