Tas. 6748. 
OXALIS ARTICULATA. 
Native of South Brazil and La Plata. 
Nat. Ord. Grrantacee£.—Tribe OxaLIpEx. 
Genus Oxauis, Linn.; (Benth. et Hook. f. Gen. Pl. vol. i. p. 276.) 
Oxauis articulata; patentim pilosa, rhizomate crasso deformi ramoso, foliis 
longe petiolatis. 3-foliolatis, foliolis obcordatis marginibus rubellis, pedunculis 
foliis longioribus, umbellis multifloris glanduloso-pubescentibus, floribus longe 
pedicellatis pallide purpureis, sepalis lineari-oblongis dorso apices versus rubro- 
callosis, petalis cuneato-obovatis recurvis, filamentis pubescentibus 5 stylis 
longioribus 5 illis brevioribus, antheris parvis didymis, ovario pubescente, stylis 
brevibus erectis, stigmatibus capitatis. 
O. articulata, Suvigny in Lamk. Dict. vol. iv. eA 686; DC. Prodr. vol. i. p. 695 
(excel, flor. color.) ; St. Hilaire Fl. Bras. Merid. vol. i. p. 124. 
This is one of a large group of sorrels which inhabit the 
temperate regions of South America, and are distinguished 
by their stout perennial woody rootstocks. It has been 
collected in South Brazil by Sellow, in Monte Video by 
Isabelle and G. Lorenz, and at Bahia Blanca, on the coast 
of Patagonia, by Darwin. It derives its specific name 
from the nature of the branched rootstock, which gives off 
tuberous annulate branches, contracted at the base, as 
shown in our plate. The flowers are erroneously described 
as yellow in De Candolle’s Prodromus. 
O. articulata was one of the fine collection of Oxales 
formed by the late Giles Munby, Esq., and which was, 
after his death in 1876, presented to Kew by his family. 
It is kept in a cool greenhouse, is sweet-scented, and flowers 
in July. 
Dich. Rootstock 2 to 3 inches high, very stout, deformed, 
woody, clothed with brown bark, giving off short rounded 
branches, marked transversely by close-set ridges ; leaves, 
scapes, and inflorescence pubescent, with lax soft spreading 
hairs. Leaves three-foliolate; leaflets three-quarters to 
one inch long, broadly obcordate, bright green with red 
APRIL Ist, 1884, 
