DEf. 1893.] BOTANICAL SOCIETY OF EDINBURGH. 5 1 



Hab. — Fortin Page. 



The specimens on which Mr. Brown has founded this 

 new genus of Sapindacese were collected on 19th Dec. 

 1890, near Fortin Page, in about 24° 50' S. Lat. D. 

 Jiurihunda is a slender tree about 20 feet in height, with 

 granular bark, slightly fissured quadroidally. The leaves 

 are pinnate with three or four pairs of oblong-lanceolate 

 leaflets. I only found one specimen in flower, and it 

 possessed only male flowers, so that the species is probably 

 dioecious. 



QUEBRACHIA MoRONGli, Britton. 



Hab. — Eio Pilcomayo, Kerr 55 ! Fl. 19th Dec. 



According to a note accompanying the specimen, this 

 tree is called " Quebracho Colorado " by the provincials, 

 that being also the name by which Q. Lorcntzii is known, 

 and would imply that the wood is of the same hard 

 character as that of the latter species. The genus 

 Qucbraclua, Griseb., is the same as Schinopsis, Engl., but 

 takes precedence over the latter by two years, having been 

 published by Grisebach in 1874 (N". E. Brown). 



Under the generic name Quebracho, which is really n 

 corruption of " quebra-hacha " or " break axe," the Argen- 

 tine provincials recognise three distinct types of trees, 

 the Quebraclio jlojo, Qucbraclio hlanco, and Qiiehracho 

 Colorado. The last of these is the most important, and 

 is famous for its dense and hard red heartwood, which 

 is one of the most valued timbers of the Argentine — 

 valued especially for its powers of resisting damp. The 

 Quebracho Colorado, as hitherto known, has been described 

 by Grisebach in his Plantar Lorentzianae as ZoxojJteryg- 

 him Lorentzii ; and later, he founded for it the new genus 

 Quchrachia (Symbol, ad Floram Arg. p. 95). The specimens 

 which I was able to obtain, however, have shown that the 

 Quchraclio Colorado of the Pilcomayo region is a different 

 species of the same genus Quchrachia — differing from the 

 Q. Lorcntzii in its simple instead of pinnate leaves. 



Crotalaria anagyroides, H. B. K. 

 Hab. — Piio Pilcomayo. 



Indigofera retrusa, X. E. Br. (n. sp.). — Pthizomate 

 lignoso, canlibus herbaceis angulato compressis, appresse 



