Oncidium cucullatum var. Chestertont Hort. in Garden 
23: 574, 1888. 
Type: Reported only from cultivation; no specimen 
is known to exist. 
Observation: Sepals 18 mm. long, 5 mm. wide; petals 18 mm. 
long, 7 mm. wide; lip 20 mm. long, 10 mm. across lateral lobes, 20 
mm. across terminal lobe. 
In appearance, this plant is very similar to O. mimeticum in growth 
habit as well as in the floral structure, especially the proportions of 
the lip. Yet, the two species can easily be separated because of the 
configuration of the callus. In O. rhodostictum, the callus of the lip is 
always nose-like, triangular in lateral view. In O. mimeticum, the callus 
is always a five-parted tubercle which is rectangular in lateral view, 
but never nose-like. 
Oncidium spathulatum (Lindl.) Stacy, comb. nov. 
Basionym: Oneidium cucullatum var. spathulatum 
Lindl., Folia Orch. Oncidium 22, 1855. 
Syn.: Oneidium nubigenum var. spathulatum (Lindl. ) 
Rehb.f. in Gard. Chron. 539, 1872. 
Oncidium cucullatum subvar. spathulatum (Lindl. ) 
Veitch, Man. Orch. Pl. pt. 8: 31, 1892. 
Type. Ecuador, without proper locality. Coll. Lobb 
s.n./ Veitch sale 1847 (IK—L). 
Oncidium Phalaenopsis var. excellens Linden in Lind- 
enia 12:58, t. 558, 1897. 
Lectotype: Ecuador, without precise locality. Im- 
ported and flowered by Linden s.n. No specimen is 
known to exist. The illustration in Lindenia is chosen 
here for the Lectotype. 
Observation: Dorsal sepal 16 mm. long, 7 mm. wide; lateral sepals 
connate to middle, 17 mm. long, 6.5 mm. wide; petals broadly el- 
liptic, obtuse, more or less mucronate, 14 mm. long, 8.5 mm. wide; 
lip constricted above middle with open, rounded sinuses, up to 25 
mm. long, 18 mm. across lateral lobes, 22-32 mm. across terminal 
lobe. 
Illustrations: Warner & Williams, Orch. Album 2; t. 96, 1883, as 
O. Phalaenopsis; Veitch, Man. Orch. PI. pt. 8: 30, 1892, as O. cucul- 
latum var. Phalaenopsis; Amer. Orch. Soc. Bull. 27: 758, 1958, as 
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