A NOTE CONCERNING 
TWO SOUTH AMERICAN ORCHIDS 
BY 
Louis O. WILLIAMS 
Erythrodes platensis ( Hauman) L. O. Willams 
comb. nov. 
Physurus platensis Hauman in Anal. Mus. Nac. Hist. 
Nat. Buenos Aires 29 (1917) 870, fig. 5. 
This species has appeared in a collection of orchids 
sent to me recently from Argentina by Dr. Arturo 
Burkart. 
The specimen reported from Paraguay is essentially 
the same as the ones from Argentina. 
Paracuay: Near Sapucay. August 1913. Hassler 11899. 
ARGENTINA: Province of Buenos Aires, Delta del Parana, Arroyo 
Pajarito. September 18, 1932. Burkart 4596; Ribera del Rio de la 
Plata, Isla Santiago. November 31, 1930. Cabrera 1505, 
Malaxis Reichenbachiana (Sciltr.) L. O. Wil- 
liams comb. nov. 
Microstylis Reichenbachiana Schlechter in Fedde Re- 
pert. Beihefte 10 (1922) 40. 
The specimen referred to below, was sent for determi- 
nation by Professor Martin Cardenas of La Paz, Bolivia. 
Bouivia: Sailapata, Department of Cochabamba. On wet soil in 
forest. At 2900 meters altitude. November 1935. Cardenas 3285. 
[ 143 ] 
