INFERTILE HYBRIDS. 199 
The great majority of the leaf-stalks are quite destitute of them. The 
stalks bearing them are the hairiest. The outgrowths occur in the 
centre of two of the leaves, and a small one on one of the chief veins. 
None are found on the under side of the leaves. 
The above plants have never been known to flower. 
Reciprocal Hybrids of Begonia fuchsioides x B. foliosa. 
Begonia fuchsioides and B. foliosa are much alike in habit of growth, 
foliage, and flower. Both are erect-growing, many-stemmed, fibrous- 
rooted species, with comparatively small leaves and flowers. 
B. fuchsioides is distinguished from B. foliosa by being the stronger. 
Its leaves are stalked, elliptical, oblique, acute, with numerous minute 
serrations. The longest leaves are 14 inch. 
In B. foliosa the leaves are sessile, ovate, oblique, with a few deep 
indentations on the opposite margins near the apex, followed by minute 
serrations. The largest leaves are ? inch long. The flowers of B. foliosa 
resemble those of B. fuchsioides, but are smaller. 
Reciprocal hybrids between those two species were easily secured. 
The one series cannot be distinguished from the other. All bear a very 
decided resemblance to B. fuchsioides. They are stronger growers than 
that species. The leaves are almost sessile, less acute than in B. 
Juchsioides, with indentations corresponding to those in B. foliosa, but 
less marked. The longest leaves are 13 inch. 
Seedlings of the hybrids have been raised in considerable numbers. 
In no case has Mendelian segregation been noticed in them. They have 
repeated the characters of the hybrid parents. It seems certain, however, 
that many of the seedlings of the second generation are not such free 
growers as those of the first. One has varied from the type, and produced 
leaves which curve backwards and give the impression that the plant is 
suffering from drought. 
In connection with the matter of reproduction of hybrid characters, it 
may be of interest to mention that I find a repeat of that well-known 
hybrid, B. weltoniensis, coming true from seed year after year. 
ZONAL PELARGONIUM HyBRIDs. 
Pelargoniums afford a ready means of experimenting with plants 
having variegated leaves.* One series of experiments with these may be 
described. Two variegated zonal pelargoniums were chosen as parents. 
The variegation of the seed-parent was of a familiar kind, the peripheral 
zone of white enclosing a bluish-green centre and sending into it pro- 
jections of more or less intense variegation. In the pollen-parent the 
variegation, also white, occupied the centre and margin of the leaves. 
The flower of the seed-parent was white, and that of the pollen-parent 
was probably scarlet, but the record has been lost. 
The seedlings resulting from the cross were in the majority of cases 
non-variegated and coarse. A few were variegated from the first, but 
only one has been made special note of. Its cotyledons were blotched 
with white (fig. 42), thus demonstrating clearly that, whatever variegation 
* Cf. Focke, Die Pflanzen-Mischlinge, p. 95. 
