EXPLANATION OF THE ILLUSTRATIONS 
Pirate I. Srenoprera ciiraris C. Schweinfurth. 1, 
plant, one half natural size. 2, flower and ovary from 
side (natural position), two and one half times 
natural size. 3, flower from front (expanded), two 
and one half times natural size. 4, lateral sepal 
and lip (natural position), four times natural size. 
5, floral bract, one and one half times natural size. 
Pirate I], Srenoprera Laxircora C.Schweinfurth. 1, 
plant, one half natural size. 2, flower, ovary and 
floral bract from side (natural position), twice nat- 
ural size. 3, flower from front (expanded), twice 
natural size. 4, petal, four times natural size. 5, 
floral bract, twice natural size. 
Piate IIL. Srenoprera MONTANA C. Schweinfurth. 1, 
plant, lower half, one half natural size. 2, plant, 
upper half, one half natural size. 3, flower and 
ovary, partially expanded, two and one half times 
natural size. 4, lip, showing attachment to lateral 
sepal, five times natural size. 5, petal, five times 
natural size. 
Pirate IV. ALTEeNSTEINIA LoNGIsPIcaATA C.Schwein- 
Jurth. 1, plant, one half natural size. 2, flower, two 
and one half times natural size. 3, lip (expanded), 
four times natural size. 4, petal, four times natural 
size. 5, lateral sepal, four times natural size. 6, 
column from front, four times natural size. 7, column 
from side, four times natural size. 
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