. The American florist : a weekly journal for the trade. Floriculture; Florists. ipop. The American Florist. 535 exact if it is delicately removed and repotted, which may be done if it has attained a certain strength. The removal of the plantlet stimulates in the prothal- Uiuin the germination of another oosphere and consequently of another plantlet, this process being repeated four to six times, at least. It is possible even, the prothallium having attained its largest size, to cut it into five or six pieces, placing them face downward on moist sphagnum, and obtain from each piece a perfect p
. The American florist : a weekly journal for the trade. Floriculture; Florists. ipop. The American Florist. 535 exact if it is delicately removed and repotted, which may be done if it has attained a certain strength. The removal of the plantlet stimulates in the prothal- Uiuin the germination of another oosphere and consequently of another plantlet, this process being repeated four to six times, at least. It is possible even, the prothallium having attained its largest size, to cut it into five or six pieces, placing them face downward on moist sphagnum, and obtain from each piece a perfect plant. This cutting of the prothallium, which has seemed ex- traordinary to many growers, is easily The antheridia generally number 30 or 40, and produce a great number of antherozoids to certainly in- sure the fecundation of all the archegonia, of which the number is much smaller. The oldest cell germinates first and pro- duces a plantlet; if this plantlet is al- lowed to evolve in place, it absorbs as nourishment the prothallium and its con- tents, including the younger oospheres; if, on the contrary, the plant is removed, a second germ develops and produces a second plantlet, ; With a degree of skill, patience and a good magnifying glass, the experimenter will find much in this field to interest him.—Revue Horticole. Notes In Season. Many growers still prefer to sow their own fern spores and thus to follow the stock through all stages of growth, while others buy the stock in flats ready for potting off, from one of the large dealers, and thus avoid the tedious work of the earlier operations of fern growing. These flats of fern seedlings are usually from a late fall or early winter sowing, the young plants having been pricked out into shallow flats just as soon as they were large enough to handle, and are then al-. Fig. 4—Archegonium With Its Oospore. lowed to remain in these flats until large enough to be potted off. There is, how- ever, much to inte
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