ADDISONIA 17 
(Plate 9) 
MAXILLARIA RINGENS 
Gaping Mazxillaria : 
Native of southern Mexico and Central America 
Family ORCHIDACEAE OrcHIp Family 
Maxillaria ringens Reichb. f.; Walp. Ann. 6: 523. 1863. 
An epiphytic orchid with pseudobulbs about three quarters of 
an inch long, somewhat compressed, one- -leaved, with the sheaths 
at the base up to twice as long as the pseudobulb, brown. The 
leaves are elliptic-oblong, up to seven inches long and one and a 
quarter inches wide, and are of a rather dark yellowish-green, acute 
at the apex, folded at the sessile base. The flower stalk is four to 
five inches long, many times longer than the pseudobulb, but shorter 
than the leaves, and is clothed with many-nerved sheaths which 
touch each other or overlap toward the summit of the stalk, the 
upper sheaths more or less tinged with dark purple, the uppermost 
one equaling or a little shorter than the ovary. The stalk bears a 
single large somewhat nodding flower about one and ican quarters 
across, the chin at its base about three sixteenths of an inch long, 
linear, somewhat arched, abruptly narrowed into an acutish point, 
a trifle over one inch long. The lateral sepals are Sipe Poe 
ae and a age 
as the dorsal opal. They are falcate, with the apex bent well 
focward. The lip is yellowish-white, about five eighths of an inch 
long and three eighths of an inch wide and oblong-elliptic when 
spread out. The lateral lobes are about half an inch long, obtuse, 
the middle lobe being quadrate and much thickened, rounded at 
apex, crenulate on the margins, of a deep red-brown color, 
ed do cen i i 
with an acute apex running along the ee of the lip from just 
below the apex of the lateral lobes to the 
The plant which furnishes this eae was secured by W. 
R. Maxon at Navarro, Costa Rica, in 1906, and has flowered 
several times in the conservatories of the New York Botanical 
Garden. Mazillaria ringens was described from herbarium speci- 
mens secured by Karwinsky in Oaxaca, Mexico, and by Warscewicz 
in Guatemala; Navarro is several hundred miles further south, and 
it is with some hesitation, therefore, that our plant is referred to 
