562 PATAGONIAN EXPEDITIONS I BOTANY. 



late flowers. Petals mostly wanting. Ovary immersed in the disk, free, 

 2- 1 -celled. Fruit a drupe, surrounded by the receptacular-cup, and partly 

 adherent to it. Seed compressed, or globose, not furrowed. 

 Species 10, in warm parts of Amer. 



CONDALIA MICROPHYLLA Cav. (C. Hneata A. Gray.) 



Branches and branchlets light gray. Leaves very small, on short spurs, 

 spatulate to oblong, 4-10 mm. long, mucronate or cuspidate, marked by 

 3-4 nerves on each side underneath. Flowers shortly pediceled. Calyx 

 whitish, 5-lobed. Petals none. Drupe oblong. 



(Argentina, " piquillin.") 



N. Patagon., in high places by Rio Negro (Wilkes Exp.). 



Three kinds of this according to the color of the drupes, melano-, 

 erythro-, xanthocarpa. 



(Pkylica Linn, not found in America, is often heath-like with entire 

 revolute, tomentose leaves and superior flowers, having 3-celled ovary 

 and tricoccous fruit. It has many species in S. Africa, Madagascar, 

 Bourbon, etc. One, P. arborea Thou., is found in Amsterdam I., the 

 only tree of that island, forming its woods ; also in Tristan, 5,000 miles 

 distant, and nowhere else. Neighboring islands of these are all treeless.) 



2. TREVOA Miers. 



Leafy, branching, spinescent shrubs, with opposite branches and 3-nerved 

 leaves, and small, deciduous stipules. Flowers fascicled on i -flowered 

 pedicels, below the axillary spines, 4-5-merous. Calyx long-produced 

 above the inconspicuous disk, hairy inside, and its tube persisting under 

 the ovoid, 2-3-celled drupe. 



Petals and stamens inserted in the mouth of the calyx. 



Species 3, Bolivia and Chili. 



T. PATAGONICA Speg. 



Nearly leafless, densely spreading, with spinose branches, 1-3 meters 

 high. 



Leaves early deciduous, elliptical, entire, obtuse upward, briefly cuneate 

 below with a short petiole. Flowers racemed, white, minutely appressed- 

 pubescent, with a large, bilocular, globose drupe. 



