Dichaea Rendlei is known from British Guiana, Guade- 
loupe and Trinidad. The two Trinidad collections differ 
from the type in having a rounded, instead of a subacute, 
anchoraeform lip, but, in other characters, they can easily 
be accommodated within the concept. 
Trinipap: Aripo, April 16, 1908, Broadway 2330 (Herb. Ames 
10668); Mora Forest, September 3, 1925, Williams s.n. (Herb. Trin. 
11347; Herb. Ames 66928). 
Inasmuch as Cogniaux cited but one species of Dichaea 
from Trinidad, it may be helpful to have the following 
key to distinguish the concepts now recognized from the 
Colony. 
1. Leaves not articulate, persistent. 
2. Leaves relatively large, distant (0.8-1 em. or more apart) 
glabrous; margins entire. Dichaea muricata 
2A. Leaves very small, close (less than 4 mm. apart), echinulate 
on both surfaces; margins denticulate-ciliate. 
Dichaea hystricina 
1A. Leaves articulate at base, deciduous. 
8. Leaves narrowly linear. Petals lanceolate. Lip con- 
spicuously keeled. Dichaea graminoides 
3A. Leaves oblong-ligulate. Petals ovate or oblong. Lip 
without keel. 
4, Leaves apiculate. Lateral sepals ovate, 5—5.5 mm. 
long. Petals 4 mm. long. Lip anchor-shaped, lat- 
eral lobes linear. Dichaea Rendlei 
4A. Leaves not apiculate. Lateral sepals broadly lan- 
ceolate, 7-8 mm. long. Petals 7-8 mm. long. 
Lip triangular-sagittate ; lateral lobes triangular- 
faleate. Dichaea picta 
KpripENbDRUM Linnaeus 
Epidendrum anceps Jacquin Sel. Stirp. Amer. 
(1768) 224, t. 138. 
Collections of this common and wide-ranging orchid 
have apparently not hitherto been cited from Trinidad 
and ‘Tobago. 
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