CEPHALANTHERA. VII.] 1 77 When exposed to the air this drum contracts on one side, and alters the direction of the pollen mass, thus bringing it (as in Orchis mascala ) into such a position that it comes in contact with the stigmatic surface of the flower to which it is carried. Habenaria bifolia… … Fig. 125. — Cephalauikera gramiiflora in many important particulars. The viscid disks are oval ; the viscid matter itself is of somewhat different character ; the drum-like pedicel is rudimentary ; the stalk of the pollen mass is much shorter ; the packets of pollen shorter and whiter; and the…
Flowers -- Color · Plants -- Variation · Fertilization of plants
Internet Archive · Fisher - University of Toronto · Public domain (published before 1931). Free to use for anything.
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