ADDISONIA 63 
(Plate 32) 
CATASETUM SCURRA 
Green-veined Catasetum 
Native of British Guiana and Panama 
Family ORCHIDACEAE ORCHID Family 
Catasetum Scurra Reichb. f. Gard. Chron. 1872: 1003. 1872. 
An epiphytic orchid with petioled leaves, and with the flowers, 
which are white marked = pt en and red, in sepgnes racemes. 
The ovate pseudobulbs are an inch to an inch and a half lon ng and 
bear acute oblong- Taseeakere: eae The pendulous raceme is 
usually three to four inches long, the flowers, commonly Pet than a 
dozen, measuring a little under an inch across, and s gata 
right angle to the stem. The sepals and petals, a abort a a hat inch 
long, are white, sate with green. ‘The sepals are oval, the dorsal 
lip, somewhat compressed laterally, is three quarters of an inch to 
an inch long, spurred, and three-lobed; the lateral lobes, partially 
enclosing the column, are erect wit t e margins recurved and 
fimbriate-toothed; the middle lobe is fim — about three eighths 
of an inch long and one half inch wide, onnected with the bo dy 
of the lip by a short broad seh iinaiss the btidat spur is about a quarter 
of an inch deep with two lateral interior projections partially closing 
its mouth, the interior of the cavity being veined with red. The 
column is white and about three eighths of an inch long. The 
pollinia, with their attached stalk, are a little less than one eighth 
of an inch long. 
The drawing, from which the illustration was prepared, is of a 
plant collected by the late J. C. Harvey at Veragua, Panama, at an 
elevation of about 1,200 feet; it has been in the collections of the 
New York Botanical Garden since the fall of 1913, and flowered in 
February, 1914. Asits habitat would indicate, this species requires 
the conditions in a tropical house for its successful cultivation. 
The genus Catasetum contains about forty known species, dis- 
tributed from Mexico to Brazil and Peru, with one recorded from 
Trinidad. Many more have been described, but owing to the 
eccentric variability in the form of the flowers, a large part of them 
must be referred to other species. This variability consists in a 
trimorphic condition of the flowers, each form so different from the 
others that as many genera have been founded upon them. The 
genus first established was Catasetum, published by L. C. Richard in 
