anther-cap, as seen in Fig. 18 and in 19, where the anther-cap is removed.
On the conclusion of these singular movements no remains of the stigma can be seen. As a rule these operations are concluded before the full expanding of the flower, whose petals, after remaining expanded for only a few hours, fade, and, closing round the column, exclude any intruder from disturbing the interesting and mysterious rites of nature being enacted within.
I have found that in some cases the A a rostellum (the upper margin of the stigma) is not invaginated down the stylary canal, but retainA the more natural orchideal form of a broad flat fig. 22.a arundina speciosa,
floor to the anther, projecting far over showing the second form , . . *-L. ,TT1 OF flower; e, f, as in
the stigma as seen in .big. 22. \vhen fig. 16; i,ridge on floor
the flower of Arundina speciosa has this of^other^cap*BOVNDARY rare form it invariably, as far as my
observations enable me to speak, falls off unfertilized. The pollinia also lie far back in the anther, and are entirely concealed by the anther-case, which fits close down all round. An insect, to secure the pollinia, wTould require to alight on the
fig. 23. fig. 24.
^IGS. 23 AND 24.a ERIA SP., NEAR TO E. JAVENSIS ; A, ANTHER-CAP, IN FIG. 23, SHRIVELLED UP ,* B, POLLINIA ; B2, POLLINIA SWOLLEN AFTER FALLING INTO STIGMA; D, ROSTELLUM; E, STIGMA.
margin of the rostellar platform and lift up the anther case, a difficult operation, which supposing it to have successfully accomplished, it might wander far to find a stigma to apply the pollen so obtained to, for its own form of organs does not 8