It seems that this plant has only been cultivated within the last hundred or hundred and fifty years. The botanists of the sixteenth century speak of it as a wild species introduced occasionally into botanical gardens. Olivier de Serres does not mention it.
It was formerly supposed to be an antidote against the bite of adders, and was sometimes called the viper’s plant. As to the etymology of the name Scorzonera, it is so evident, that it is difficult to understand how early writers, even Tournefort,[103] have declared the origin of the word to be escorso, viper in Spanish or Catalan. Viper is in Spanish more commonly vibora.
There exists in Sicily a Scorzonera deliciosa, Gussone, whose very sugary root is used in the confection of bonbons and sherbets, at Palermo.[104] How is it that its cultivation has not been tried? It is true that I tasted at Naples Scorzonera ices, and found them detestable, but they were perhaps made of the common species (Scorzonera hispanica).
Potato—Solanum tuberosum, Linnæus.
In 1855 I stated and discussed what was then known about the origin of the potato, and about its introduction into Europe.[105] I will now add the result of the researches of the last quarter of a century. It will be seen that the data formerly acquired have become more certain, and that several somewhat doubtful accessory questions have remained uncertain, though the probabilities in favour of what formerly seemed the truth have grown stronger.
It is proved beyond a doubt that at the time of the discovery of America the cultivation of the potato was practised, with every appearance of ancient usage, in the temperate regions extending from Chili to New Granada, at altitudes varying with the latitude. This appears from the testimony of all the early travellers, among whom I shall name Acosta for Peru,[106] and Pedro Cieca, quoted by de l’Ecluse,[107] for Quito.
In the eastern temperate region of South America, on the heights of Guiana and Brazil, for instance, the potato was not known to the aborigines, or if they were acquainted with a similar plant, it was Solanum Commersonii, which has also a tuberous root, and is found wild in Montevideo and in the south of Brazil. The true potato is certainly now cultivated in the latter country, but it is of such recent introduction that it has received the name of the English Batata.[108] According to Humboldt it was unknown in Mexico,[109] a fact confirmed by the silence of subsequent authors, but to a certain degree contradicted by another historical fact. It is said that Sir Walter Raleigh, or rather Thomas Herriott, his companion in several voyages, brought back to Ireland, in 1585 or 1586, some tubers of the Virginian potato.[110] Its name in its own country was openawk. From Herriott’s description of the plant, quoted by Sir Joseph Banks,[111] there is no doubt that it was the potato, and not the batata, which at that period was sometimes confounded with it. Besides, Gerard[112] tells us that he received from Virginia the potato which he cultivated in his garden, and of which he gives an illustration which agrees in all points with Solanum tuberosum. He was so proud of it that he is represented, in his portrait at the beginning of the work, holding in his hand a flowering branch of this plant.
The species could scarcely have been introduced into Virginia or Carolina in Raleigh’s time (1585), unless the ancient Mexicans had possessed it, and its cultivation had been diffused among the aborigines to the north of Mexico. Dr. Roulin, who has carefully studied the works on North America, has assured me that he has found no signs of the potato in the United States before the arrival of the Europeans. Dr. Asa Gray also told me so, adding that Mr. Harris, one of the men most intimately acquainted with the language and customs of North American tribes, was of the same opinion. I have read nothing to the contrary in recent publications, and we must not forget that a plant so easy of cultivation would have spread itself even among nomadic tribes, had they possessed it. It seems to me most likely that some inhabitants of Virginia—perhaps English colonists—received tubers from Spanish or other travellers, traders or adventurers, during the ninety years which had elapsed since the discovery of America. Evidently, dating from the conquest of Peru and Chili, in 1535 to 1585, many vessels could have carried tubers of the potato as provisions, and Sir Walter Raleigh, making war on the Spaniards as a privateer, may have pillaged some vessel which contained them. This is the less improbable, since the Spaniards had introduced the plant into Europe before 1585.
Sir Joseph Banks[113] and Dunal[114] were right to insist upon the fact that the potato was first introduced by the Spaniard, since for a long time the credit was generally given to Sir Walter Raleigh, who was the second introducer, and even to other Englishmen, who had introduced, not the potato but the batata (sweet potato), which is more or less confounded with it.[115] A celebrated botanist, de l’Ecluse,[116] had nevertheless defined the facts in a remarkable manner. It is he who published the first good description and illustration of the potato, under the significant name of Papas Peruanorum. From what he says, the species has little changed under the culture of nearly three centuries, for it yielded in the beginning as many as fifty tubers of unequal size, from one to two inches long, irregularly ovoid, reddish, ripening in November (at Vienna). The flower was more or less pink externally, and reddish within, with five longitudinal stripes of green, as is often seen now. No doubt numerous varieties have been obtained, but the original form has not been lost. De l’Ecluse compares the scent of the flower with that of the lime, the only difference from our modern plant. He sowed seeds which produced a white-flowered variety, such as we sometimes see now.
The plants described by de l’Ecluse were sent to him in 1588, by Philippe de Sivry, Seigneur of Waldheim and Governor of Mons, who had received them from some one in attendance on the papal legate in Belgium. De l’Ecluse adds that the species had been introduced into Italy from Spain or America (certum est vel ex Hispania, vel ex America habuisse), and he wonders that, although the plant had become so common in Italy that it was eaten like a turnip and given to the pigs, the learned men of the University of Padua only became acquainted with it by means of the tuber which he sent them from Germany. Targioni[117] has not been able to discover any proof that the potato was as widely cultivated in Italy at the end of the sixteenth century as de l’Ecluse asserts, but he quotes Father Magazzini of Vallombrosa, whose posthumous work, published in 1623, mentions the species as one previously brought, without naming the date, from Spain or Portugal by barefooted friars. It was, therefore, towards the end of the sixteenth or at the beginning of the seventeenth century that the cultivation of the potato became known in Tuscany. Independently of what de l’Ecluse and the agriculturist of Vallombrosa say of its introduction from the Iberian peninsula, it is not at all likely that the Italians had any dealings with Raleigh’s companions.