[90]

Diagram 3.

[90v]

303

Ch VII

where this species plant abounds the two forms whilst walking quickly passed them. According to Vaucher, the smaller size of the corolla is common to the females of most or all of the above mentioned Labiatæ. The pistil of the female, though somewhat variable in length, is generally shorter than with the margins of the stigma broader & formed of more lax tissue, than that of the hermaphrodite. The stamens in the female vary excessively in length; they are generally enclosed within the tube of the corolla, & their anthers do not contain any sound pollen; but after long search I found a single plant with exserted the stamens moderately exserted, & their anthers contained a very few full-sized grains of pollen together with a multitude of minute empty ones cells-grains.

In other females the stamens are extremely short, & their minute anthers, though exhibits divided into the two normal cells or loculi, contained not a trace of pollen: in others again the anthers did not exceed in diameter the filaments which supported them, & were not divided into two loculi. Judging from what I have myself seen and from the descriptions of others, all the plants in Britain, Germany & near Mentone