270 PLANT NAAIES AND SYNONYMS 



a. 0. fragrans (Thunb.) Lour. (Olea fragransThunb.). China. 

 Fragrant Olive. Flowa^s used to perfume tea. The American 

 Olive of southeastern U. S., (b) 0. Americanus v^. ) B- ^ H* 

 (Olea Americana L. ), is called also Devil-wood, the wood hard 

 to split. 



1471. OSMl^NDA, L. Flowering Fern. Osinimdaceae. 



Dedicated to Osmunder, a Scandinavian deity. Marsh ferns, 

 fertile fronds or portions of frond greatly modified, justifying 

 the popular name. About 6 species, north temperate zone; 3 in 

 U. S. 



a. 0. cinnamomea L. Canada and eastern U. S. Cinnamon Fern, 



Swamp Brake, Fiddle-heads, Bread-root. 



b. 0. regdlis L. Europe, Asia, Canada, U. S. east of Kocky 



Mountains, Mexico. Royal Fern, Buckhorn Brake, Royal Brake, 

 Royal Osmund, Regal Fern, King Fern, Flowering Fern, 

 Royal Flowering Fern, Snake or Ditch Fern, Tree Fern*, 

 Buckhorn Male-fern, Hartshorn bush. Lady Brake, Flowering 

 Brake, Herb Christopher*, St. Christopher' s herb. Bog Onion*, 

 Osmund- the- waterman; Ger. Konigsfarrn, Traubenfarrn. Rhi- 

 zome tonic, astringent, demulcent. 



1472. 6STRYA, Scop. Hop-LLornbeam. Betulaceae. 



The classical name. Syn. Carpinus, in part. Trees with 

 heavy hard wood. Four known species, N. temperate zone; 2 

 in U. S. 



a. 0. Virgiiiiaua (Mill.) Willd. (C. Virginiana Mill., O. Virgi- 

 nica Willd.). Canada and eastern U. S. Hop-hornbeam, 

 Ironwood, Deer-wood, Lever-wood, Hardback*, Black Hazel, 

 Indian Cedar. Bark bitter tonic. 



1473. OUROUPARIA^ Aubl. 1775. Gambir. Rubiaceae. 

 Syn. Uncaria, Schreb. 1789, Uncinaria, Reichb. 1841; Nauc- 



lea, in part. Shrubby climbers with hooked spines. About 35 

 species mostly of India, one of S. America. 



a. 0. Granibier (Roxb.)Bai 11. (U. Gambler Roxb.,N. Gambler Hun- 

 ter). East Indies. An extract of the leaves and young shoots 

 constitutes the tanning material gram6ir (gambler), called also 

 terra japonica and pale catechu. Catechu pallidum. Catechu, Br. 

 and P. G. ; Ger. Gambir Catechu, Gutta Gambir; Fr. Gambir 

 cubique; astringent. See Acacia Catechu. Gambir is prepared 

 also from (b) 0. acida (Roxb. ) Lyons (U. acida Roxb. ) of 

 Pulo Penang and neighboring islands. 



1474. OWENIA, F. Muell. Plum*, Wild Apple. Meliaceae. 

 Named for Richard Owen, naturalist. Trees. About 6 spe- 

 cies, Australia, (a) 0. cerasifera F. Muell. is called Sweet 

 Plum, Rancooran; (b) 0. veiiosa F. Muell. is called Sour 

 Plum, Pyddharr, Tulip-wood. 



1476. OXALIS, L. Wood Sorrel. Oxalidaceae. 



N From Greek, "sour". Syn. Oxys, Adans. Herbs, often 

 bulbous, with digitate (commonly trifoliate) leaves. About 

 250 species, chiefly of warmer legions; 20 in U. S., including 

 some naturalized. 



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