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and are thus designated, for they serve as the means for the removal of the larger waxy masses from the anther-cells. The tips of the caudicles are generally reflexed, and in the mature flower protrude a little

Fig. 22.

Cattleya.

col.a. anther.

col.b. spring at the top of the column.

colp. pollen-masses.

col.r. rostellum.

col.s. stigma.

col. column.

col.l. labellum.

col.n. nectary.

col.g. ovarium, or germen.

A. Front view of column, with all the sepals and petals removed.

B.Section and lateral view of the flower, with all the sepals and petals removed, except the bisected labellum shown only in outline.

C. Anther viewed on the under side, showing the four caudicles with the four pollen-masses beneath.

D. A single pollinium, viewed laterally, showing the pollen-mass and caudicle.

way out of the anther-case (see fig. A) lying on the base of the upper membranous lip of the rostellum. The labellum enfolds the column, making the flower