I 
ON VARIEGATION IN PLANTS. 
Action proceeding in a circular manner from the margin to the centre of the leaf. 
I. Leaves marginate, with a narrow border of white, yellow, pale green, or purple. 
A. Border entire, not interrupted. 
Viburnum Lantana, var. foliis flavo-rnarginatis. 
Pyrus arucricana, var. foliis albo-purpui'eo-marginatis. 
Euonynius japonieus, var. foliis albo-marginatis. 
Praxinus excelsior argenteus, var. foliis flavo-marginatis. 
Buxus sempervirens, var. foliis flavo-marginatis. 
Ilex Aquifolium, var. foliis albo-flavo-marginatis. 
B. Margin interrupted. 
Quercus Robur, var. interrupte albo-marginatis. 
Fagus sylvatica, var. interrupte albo-flavo-marginatis. 
Note. The list might be extended, hut this kind of variegation is not common. 
II. Loaves margined with white, yellow, pale-green, or purple, to about a quarter or one-sixth of 
the entire breadth. 
A. Border without irradiations. 
Taxus baceata, var. foliis flavo-limbatis. 
Philadelphus hirsutus gracilis, var. foliis flavo-limbatis. 
Amygdalus persica, var. foliis flavo-albo-limbatis. 
B. Border, with slight irradiations towards the centre. 
Quercus Cerris, var. foliis flavo-radiato-linibatis. 
Ulmus campestris, var. foliis flavo-radiato-limbatis. 
Castanea vesca, var. foliis albo-radiato-limbatis. 
Aristotelia Macqui, var. foliis flavo-radiato-limbatis. 
Fagus sylvatica, var. foliis flavo-viridi, pui'pureo-radiato-limbatis. 
Staphylea piunata, var. foliis flavo-radiato-limbatis. 
Cornus maseula, var. foliis flavo-radiato-limbatis. 
Cornus alba, var. foliis albo-flavo purpureo-radiato-linibatus. 
III. Leaves discoid, having only the disk or centre of the leaf white or yellow, the border 
being green. 
Prunus Padus hctcrophylla, var. foliis flavo-viridi-discoidalibus. 
Euonymus curopreus, var. foliis albo (aures) diseoidalibus. 
Ilex Aquifolium, var. foliis albo-discoidalibus. 
Note. This kind of variegation is very beautiful ; hut it is rare. 
IV. Leaves zoned, in which the disk and the border are green, the one separated from the 
other by a white or yellow zone. 
Symphoriearpus racemosus, var. foliis flavo-albo-zonatis. 
Note. Tins form of variegation has some resemblance to the spotting of the same kind, as in 
Pelargonium latcripes, Oxalis Deppei, &c. It is very rare and beautiful. 
1 Action proceeding without order, independently of the border, from the nerves of the summit or the 
base of the blade. 
V. Leaves maculo-variegatcd, or spotted irregularly and without order, with white or yellow spots. 
Aucuba japonica, var. foliis albo-flavo-maculo-variegatis. 
Prunus aucubiefolia, var. foliis navo-maculo-variegatis. 
Note. The few examples that we cite here prove exactly that variegation is a phenomenon 
more regular in its mode of action than is commonly believed. In all other forms of variegation 
the regularity is much greater than in the present instances. 
' Art inn proceeding bg the influence if the sgsteni of nervation on tin' iiitcrvenium. or vice versa : SO 
that it proceeds from the discoloured band and the variegated areole to the lateral portion of the 
discoloured or variegated blade. 
VI. Leaves reticulated, in which the iulcrvciiium is white or yellow, while the nerves and the 
veins are green, or vice versa. 
A. Iiitcrvenium discoloured, nerves and veins green. 
Aucuba japonica, var. foliis intervenio-llavo-retieulatis. 
lierbci'is vulgaris, var. foliis inlervenio-ftavo-viridi-rctirulali-. 
I'r.ixinus Ornus, var. foliis iutcrvcuio-rhvn-vir'nli-n licul.iti^. 
Sambucus lociniata, var. foliis intervenio-navo-reticulatis. 
Sambucus racemosa, var. foliis iutcrvcnio-flavo-reticulatis. 
• { 
