TUBER-BEARING SPECIES OF SOLANUM. 497 
771, “Peru, Cuesta de Purruchuca, April:” a glabrous sarmen- 
tose form, with small long-petioled acute leaflets very cordate at 
the base, very numerous large white flowers, and a long style. 
(7) Jameson, “ Valley of Lloa, Ecuador, at 8000 feet, in places 
where the forest has been cleared with the object of cultivating 
the soil." (8) Lobb, Colombia, very dwarf, with very hairy stems. 
And (9) Fendler, 271, Venezuela, near Tovar. 
In his recent botanical expedition to the Andes, M. Edouard 
André paid special attention to the question of wild Potatoes, 
and the following is what he says on the subject in the ‘ Illus- 
tration Horticole’ in 1877, vol. xxiv. p. 114 :— 
“I have found S. tuberosum, authentic and spontaneous, far 
from any human habitation, in three different places. 
“The first was the summit of Quindio, in Colombia, near the 
volcano of Tolima, at 3500 metres above the sea, in 4°34! N. lat. 
The plant formed small tufts in the vegetable mould of the 
forest, amongst the stunted trees of this alpine region. Its long 
branches were half subterranean and branched, and at their extre- 
mity the tubers were of the dimensions of a small elongated nut, 
feculent and slightly bitter. The flowers were white, with a lilac 
tinge, smaller than in our cultivated varieties; but this I attri- 
bute to the poverty of the plant in such a rigorous climate, only 
1000 metres below the perpetual snows of Tolima. 
“The second time was at Cauca, in the *boqueronnes" or copses 
of the neighbourhood of the town of La Union, in 1° 33’ N. lat. 
The altitude this time was very different, not above 1900 metres. 
The plant was developed in all its beauty, amongst brushwood 
composed of Siphocampylus, Sciadocalyx, Ageratum, Alonsoa, 
Rubus, and Lamourouxia, with a flourishing vegetation and 
covered with flowers. This was in May 1876. The stems rested 
on the neighbouring bushes; tbeir foliage was vigorous, and 
superb umbels of large violet flowers accompanied them. 
“In the neighbourhood of the villages of this region the 
cultivated plant does not at all present this aspect, but forms 
short branched tufts, as in the fields of Europe. For the rest, 
the wild tufts were numerous, scattered, far from any road from 
which they might have been sown by accident, and they had com- 
pletely the appearance of growing in a state of nature. 
“The third time was not far from Lima, in the mountain of 
Amancaes, where grows the Zsmene, and where, amongst the very 
