the type, appears to be only a small, few-flowered form 
of O. obryzatoides. Its pseudobulbs are rounder, and its 
inflorescence is a simple few-flowered raceme. The parts 
of the flower, however, do not show any morphological 
differences from those of O. obryzatoides. 
It appears to me that O.angustisepalum Kriinzl. (in 
Engler Pflanzenreich IV. 50, pt. 2 (Heft 80) (1922) (208) 
is a Closely allied plant and is possibly conspecific, as 
shown by a floral analysis; but this species was described 
from an inflorescence only, and the basal portion of the 
lip appears to be considerably narrower than that of O. 
obryzatoides. 
Two other allies of O. obryzatoides appear to be O. 
sclerophyllum Krinzl., which has about twice smaller 
flowers, and O.tetraskelidion Kriinzl., which is described 
and drawn as having acute or acutish sepals and petals, 
and is said to have the lateral lobes of the lip linear. 
Oncidium obryzatoides apparently is a polymorphic 
species both vegetatively and florally. At one extreme 
are small plants about 10 cm. tall with elliptical leaves 
and 1- or 2-flowered racemes, while at the other extreme 
are large luxuriant plants up to 75 ecm. tall with oblong- 
ligulate leaves and spreading many-flowered panicles. 
Florally the variation extends from spatulate-oblong pet- 
als about 1 em. long and 4mm. wide to broadly oblong- 
obovate petals about 1.4 em. long and 9.5 mm. wide; the 
lateral lobes of the lip are more or less well-developed ; 
the apical portion of the lip ranges from about 1 cm. to 
2 cm. in width; the basal callus of the lip is now distinct- 
ly 5- (or more) lobulate with three distinct apical teeth 
and now obscurely lobulate with only two distinct apical 
lobes. It is altogether a most variable species in which 
similar parts may vary in the same flower! 
Dichaea Morrisii Fawcett & Rendle in Journ. Bot. 
[7] 
