The natural history of plants, their forms, growth, reproduction, and distribution; . st of these plants which have coherent pollen,two, three, or more whorls of stamens are developed, the upper bear anthers andproduce pollen, the lower are without pollen, but assume the function of attractinginsects and of protecting the upper anther-bearing stamens. Regarded from this 646 SCALE-LEAVES, FOLIAGE-LEAVES, FLOKAL-LEAVES. stand-point the perianth-leaves are, as it were, only antherless stamens, and this viewis supported by the fact that in the so-called double flowers the anther-bearingstamens reg
The natural history of plants, their forms, growth, reproduction, and distribution; . st of these plants which have coherent pollen,two, three, or more whorls of stamens are developed, the upper bear anthers andproduce pollen, the lower are without pollen, but assume the function of attractinginsects and of protecting the upper anther-bearing stamens. Regarded from this 646 SCALE-LEAVES, FOLIAGE-LEAVES, FLOKAL-LEAVES. stand-point the perianth-leaves are, as it were, only antherless stamens, and this viewis supported by the fact that in the so-called double flowers the anther-bearingstamens regularly change into antherless perianth-leaves. In the flowers of water-lilies as a rule no sharp limit can be drawn between stamens and perianth-leaves,but a gradual transition from one to the other may be plainly noted. The flowersof certain limes (Tilia Americana, alba, argentea), as well as those of the arrow-grass (Triglochin), of which an illustration is given below, are very instructive inthis respect. In the Silver Lime (Tilia argentea, figs. 15] ^ and 151 -) a whorl of mc^. iff, kiiinmimiii
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbotany, bookyear1902
