312 Select Plants for Industrial Culture and 



Osyris compressa, A. de Candolle. 



South -Africa. One of the most valuable tans for finer leathers is 

 provided there by the leaves and young twigs of this shrub or small 

 tree. The bloom obtained from this tan is much like that imparted 

 by Sumach. 



Owenia venosa, F. v. Mueller. 



Queensland; called locally Sour-Plum. A tree, approaching 

 finally 40 feet in height, furnishing a wood of great strength. 0. 

 acidula, F. v. M., the "Rancouran," is a handsome tree, 50 feet 

 high, with close-grained, nicely-marked wood. Culture might 

 improve the fruits. 



Ozalis crassicaulis, Zuccarini. 



Peru. This seems one of the best of those Wood- Sorrels, which 

 yield a tuberous edible root. Amongst others, 0. tuberosa (Molina) 

 and 0. succulenta (Barneaud) from Chili, as well as 0. carnosa 

 (Molina) and O. coiiorrhiza (Jacquin) from Paraguay, might be 

 tried for their tubers. 



Ozalis crenata, Jacquin. 



Peru and Bolivia. There the tubers largely consumed ; they lose 

 their acidity by being exposed to the sun, becoming sweet, and 

 contain a good deal of starch [Vilmorin]. 



Ozalis Deppei, Loddiges. 



Mexico. The tubers of this Wood- Sorrel resemble small parsnips, 

 and are not at all acid. The plant undergoes regular cultivation in 

 some parts of its native country, and succeeds well in the south of 

 England [Chambers]. In Prof. Meehan's Gardener's Monthly, 

 August, 1884, an Oxalis is mentioned as cultivated in California 

 which produced from one original root as much as 150 tubers in a 

 season, their form being pear-like. 



Ozalis esculenta, Otta and Dietrich. 



" Spurious Aracacha." Mexico, there, with the preceding species 

 and O. tetraphylla (Cavanilles), 0. violacea (Linne) and several 

 others, producing tuberous, starchy, wholesome roots ; the first 

 mentioned gives the largest yield. Propagated by subdivision of 

 the root-stock. It requires a deep, rich, moist soil. In Norway it 

 can be grown to lat. 70 [Schuebeler]. As similarly useful may be 

 noted, among many others, 0. enneaphylla (Cavanilles) from the 

 Falkland-Islands and Maghelhaen's Straits. 



Oxytropis pilosa, De Candolle. (Astragalus pilosus, Linne.) 



Europe, West- Asia. This perennial plant furnishes fair pasture- 

 herbage ; it is deep-rooted and content with almost absolute sand ; 



