by collectors as ‘‘white and bluish, very fragrant,’ ‘‘white 
with purplish infusion,’ and ‘‘lip bluish purple and 
white.” 
It is seldom that such a distinctive natural hybrid is 
found in the Orchidaceae. * Dichaea intermedia has been 
found only in Mexico and Guatemala where it is epiphy- 
tic on trees in humid forests up to 1500 meters altitude. 
Mexico: Vera Cruz, Santa Ana, C. 4. Purpus 4443 (Herb, Gray); 
Vera Cruz, Orizaba, Bolter 524, 892 (Herb. Gray); Vera Cruz, Tlapa- 
cayan, M. B. Foster 12, 13 (Herb. Ames); Oaxaca, near Copalita, re- 
gion Pluma Hidalgo, O. Nagel 5295 (atypical) (Herb. Ames): Chiapas, 
near settlement ““La Silva,’’ O. Nagel 5615 (Herb. Ames). 
Guatemata: Alta Verapaz, Cobian, H. von Tuerckheim II 1798 (Tyre 
in Herb. Gray); Alta Verapaz, Pansamala, H. von Tuerckheim 1247 
(Herb. Gray); Alta Verapaz, Cobain, W.C. Muenscher 12531 (Herb. 
Field Mus.); Alta Verapaz, Samac, H. Johnson 297 (Herb. Ames). 
Dichaea trichocarpa (Sw.) Lindley Gen. & Sp. 
Orch. Pl. (1833) 209. 
gpidendrum trichocarpon Swartz Prodr. Veg. Ind. 
Oce. (1788) 124. 
Cymbidium trichocarpon Swartz in Nov. Act. Ups. 6 
(1799) 71. 
The reflexed, twisted leaves (fig. 1e) of D.trichocarpa 
are typically linear-lanceolate and tapering to the long- 
apiculate to subacuminate apex. The suborbicular floral 
bracts (fig. 1d) are shortly acuminate and usually strongly 
recurved at the apex. The concave-cymbiform lip is sub- 
quadrate in outline (fig. 1b) with the lateral lobes small 
or obsolescent. The eligulate column (fig. la) is 2.5-8 
mm. long, and the linear-oblong to elliptic or elliptic- 
oblanceolate petals are obtuse and apiculate to acute at 
the apex. The fragrant flowers are described by collectors 
as white with the lip barred and suffused with bluish 
purple. 
This species is rare in Mexico, Guatemala and Costa 
Rica, but is widespread and rather common in the West 
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