NOTES AND OBSERVATIONS. 139 
ovary. Sepals petal-like, spreading, linear-lanceolate, 13 mm. long, 
3 mm. broad, acute, revolute, whitish-green on the back, ground 
color of the inner surface greenish-yellow, changing in age to orange- 
yellow, almost covered by five broad parallel brownish-purple lines 
extending from the base to very near the apex with similar trans- 
verse lines connecting them at regular intervals. The upper petals 
spreading, linear-lanceolate, 11 mm. long, scarcely over 2 mm. broad, 
gradually narrowing in the lower two-thirds to the base where 
they are only about half as broad as the sepals, giving them an al- 
most linear-spatulate form, acute, slightly revolute. The coloring is 
exactly as in the sepals, with three distinct bands of purple and two 
outer narrower obscure ones. The lower petal, forming the lip, is of 
the same length, broader at the base (about 2 mm.) continuing the 
direction of the ovary, The basal portion, attached to the column, 
is about 3 mm. long and has the margins parallel. Beyond this the 
petal forms the obovate three-parted blade of the lip. Each lateral 
division is falcately elongated triangular, curving upward and inward, 
acute, body color white, with two prominent parallel purple lines extend- 
ing about two-thirds its length, with two other obscure ones near the 
base, all confluent below, forming a broad line parallel with the column. 
The middle division is round ovate with a deflexed keel-like apex and 
crisp margin. The inner surface is marked with five much wrinkled 
almost parallel ridges, the middle one extending from the throat almost 
to the apex, the next pair slightly shorter, the outer pair about half as 
long. Near the end of this outer pair the margin has a more or less 
prominent fold. The ridges are finely wrinkied transversely. The 
throat is villous pubescent. Coloring is white throughout the upper 
surface when first opening, but with age gradually changing to ochre 
yellow, as does also the ground color of the lateral divisions. The under 
surface is green from base to apex with the margins of the middle lobe 
white as above. The column is triangular prismatic, about 6 mm. long 
by nearly 2 mm. broad, very slightly larger at the upper end. The body 
color is green. Two narrow purple lines extend along the margins from 
the base almost to the top, and one more or less broken one along the 
central ridge, becoming a mottled splotch toward the top. The column 
ends in three callous horns, one at each angle, the upper or central one 
slightly larger and truncate, the lateral ones rounded. These are white, 
changing to ochre yellow in age. In the fork of the three horns are situ- 
ated the pollen masses with their cover. Seen from above, this cover is 
broadly oval, slightly constricted in the middle, yellow, changing to 
orange in age, with a row of purple dots along the lateral margins. The 
cap is supported behind by a minute spur, and below by the projecting 
upper part of the stigma. The four pollen masses are arranged in pairs 
by the recurved adherent caulicles of each end pair being united by their 
margins at a point near the base. The stigmatic surface is a deep glossy 
green-colored pit about 1 mm. in diameter. 
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