PLATE VI. 
ODONTOGLOSSUM PENDULUM. 
PENDENT-FLOWERED ODONTOGLOSSUM. 
O. (TRYMENIUM) pseudobulbis subrotundis compressis kevibus diphyllis, foliis oblongo-ligulatis 
obtusis racemo pendulo multifloro paulo brevioribus, sepalis oblongis obtusis petalisque con- 
formibus subzequalibus, labello unguiculato reniformi basi excavato marginibus callosis, 
clinandrii alis lateralibus subtruneatis dorsalique rotundato dentieulatis. 
ODONTOGLOSSUM CITROSMUM, Lindl. Bot. Reg. 1842, Misc. 68; 1843, t. 3; Fol. Orch. n. 59; Warners Select Orchidaceous Plants, 
t. 28; Lemaire, Jard. Fl. t. 90. 
CUITLAUZINA PENDULA, La Llave et Levarza, Orch. Mex. 2; Reichenbach, fil., Bonplandia, ii. 15, 16. 
Habitat in Mexico, Lexarza, Karwinski, Barker. 
DESCRIPTION. 
了 SBUDOBULBS clustered together, 2 to 4 inches long, compressed, ovate or almost round, smooth and glossy, 2-leaved, 
Leaves 6 inches to a foot long, leathery, oblong-ligulate, obtuse, rather shorter than the raceme. RACEME issuing 
at an early stage from the young growth, pendulous, many-flowered, rarely branched, longer than the leaves. SEPALS 
and Puraıs similar in form, pure white, or in some varieties of a faint blush or rose-colour, frequently sprinkled 
with minute red dots, oblong, obtuse, about an inch long. Ure unguiculate, kidney-shaped, channelled (with the solid 
edges turned up) along its base, on which there is a patch of yellow, with a few bright dots in the position where a 
crest (here entirely wanting) is usually placed ; the colour of the disk of the lip varies in different specimens, being 
sometimes entirely white and sometimes tipped with faint rose-colour or deep-crimson. COLUMN with upper and 
lower wings (all of which are toothed), that on the back being rounded and the others truncated. 
Early in the present century, two Spaniards—La Llave and Lexarza by name—settled at the Mexican town of 
Valladolid, in the fertile province of Mechoacan. They were both attached to botany, but the younger of the two, 
Lexarza, was so attracted by the beauty of the numerous Orchids of the district that to these he devoted himself with an 
ardour that would have done honour even to the Lindleys and Reichenbachs of our own day. As the result of his 
labours a little work—‘ Orchidianum Opusculum °’ he modestly styled it—presently made its appearance, wherein about 
fifty species, all at that time new to science, were described with remarkable accuracy and skill. Among the number 
there was a plant,—Cwitlauzina pendula he called it,—said to be of surpassing loveliness and to form an undoubtedly 
new genus the distinctive characters of which were minutely given. As time went on and the rage for Orchids developed 
itself in Europe, a keen desire was naturally felt by cultivators to add so fine a plant to their lists; but although many 
collectors visited Valladolid and laid hands upon nearly all the other desirable Orchids described by Lexarza, still nothing 
was heard of the Cwitlauzina, and on the cover of the latest number of Dr. Lindley’s * Folia Orchidacea? its name may be 
found in the list of genera “unknown to the author.” About the same time I myself addressed a letter to the * Gardeners’ 
Chronicle ” urging some adventurous traveller to take ship for New Spain, mainly with the object of instituting another 
search for the tantalizing plant that had hitherto eluded our grasp. Yet all this while Cwitlauzina pendula was 
amongst us, and indeed had been an established favourite for upwards of twenty years! But if so, it may well be 
asked, how came it to pass that it was never recognized ? For a full reply to this very natural inquiry I must refer 
the reader to a most ingenious article in ‘ Bonplandia’ (Jahre. iii. No. 15, 16), by the younger Reichenbach, to whom 
