TUBER-BEARING SPECIES OF SOLANUM. 499 
sea-level. His collection also includes fine specimens of S. ochra- 
canthum, H. B. K., and S. caripense, H. B. K., which have com- 
pound pinnate leaves, but are not tuber-bearing. 
2. SOLANUM rwwrrE, Dunal.—This is fully characterized by 
Dunal in vol. xiii. of the * Prodromus; p. 32, from a dried speci- 
men in the herbarium of M. Boissier, gathered in Peru by Pavon. 
It is said to differ from S. tuberosum by its more slender stems, 
narrower leaf-segments, almost glabrous above and thinly hairy 
beneath, and by its almost glabrous calyx. We have a plant at 
Kew which nearly matches the description, * Matthews, 1965, 
Casapi Peru.” I do not think that it is more than a slight 
variety of S. tuberosum. 
3. SOLANUM COLOMBIANUM, Dunal.—This is fully described by 
Dunal in vol. xv. of the * Prodromus,’ p. 33, and I have examined 
an excellent type-specimen at the British Museum, on which I 
made the following notes:—Stems slender, glabrous, sarmen- 
tose. Leaves pseudo-stipulate, 4-6 in. long, with a 1-12 in. 
petiole; leaflets oblong-lanceolate, nearly glabrous, very acute; 
main ones about 9, with numerous small ones interspersed ; end 
one 1} in. long, 4-4 in. broad. Flowers in a long-peduncled 
compound cyme; peduncle and pedicels nearly glabrous. Calyx 
glabrous, 1 in. long; teeth deltoid, scarcely exceeding the tube. 
Corolla small, lilac, with deltoid segments. This is Moritz 829, 
from the colony of Tovar, in Venezuela. It is labelled “ Col. 
Tovar; silv. mont. sponte.; fl. Mart. S. tuberoso simillimum 
et tuberis «qualibus instructum, sapore paullo acriori.” Ido 
not think that it is more than a slight variety of S. tuberosum. 
4. SOLANUM VALENZUELÆ, Palacio.— All that is known of this 
is contained in a letter from M. Palacio to M. DeCandolle, dated 
London, February 1816, which is printed at p. 340, vol. ii. of 
the Memoirs of the Paris Museum. It says:—* Dom. Eloy 
Valenzuela, Cure of Bueamara, in the department of Giron, in 
the province of Pampeluna, in New Granada, a pupil of Mutis, 
found in 1809 a new species of potato on the borders of the 
Maláve, at a height where the thermometer is 5? an hour before 
sunrise. He has named it Solanum Papa; but as the name Papa 
is common to all the potatoes, probably it would be well to call it 
S. Valenzuele. Its root is easy to cook, white, of very good 
