Origin of Cultivated Plants. Alphonse de Candolle

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origin, and are still to be seen in these regions wild, or half wild, in some form or other.

      Plants so commonly cultivated and whose germination is so easy often spread round cultivated places; hence some uncertainty regarding the really wild nature of the plants found in the open country. Nevertheless, Linnæus mentions that Brassica napus grows in the sand on the sea-coast in Sweden (Gothland), Holland, and England, which is confirmed, as far as Sweden is concerned, by Fries,62 who, with his usual attention to questions of this nature, mentions Br. Campestris, L. (type of the Rapa with slender roots), as really wild in the whole Scandinavian peninsula, in Finland and Denmark. Ledebour63 indicates it in the whole of Russia, Siberia, and the Caspian Sea.

      The floras of temperate and southern Asia mention rapes and turnips as cultivated plants, never as escaped from cultivation.64 This is already an indication of foreign origin. The evidence of philology is no less significant.

      There is no Sanskrit name for these plants, but only modern Hindu and Bengalee names, and those only for Brassica rapa and B. oleracea.65 Kæmpfer66 gives Japanese names for the turnip —busei, or more commonly aona– but there is nothing to show that these names are ancient. Bretschneider, who has made a careful study of Chinese authors, mentions no Brassica. Apparently they do not occur in any of the ancient works on botany and agriculture, although several varieties are now cultivated in China.

      It is just the reverse in Europe. The old languages have a number of names which seem to be original. Brassica rapa is called meipen or erfinen67 in Wales; repa and rippa in several Slav tongues,68 which answers to the Latin rapa, and is allied to the neipa of the Anglo-Saxons. The Brassica napus is in Welsh bresych yr yd; in Erse braisscagh buigh, according to Threlkeld,69 who sees in braisscagh the root of the Latin Brassica. A Polish name, karpiele, a Lithuanian, jellazoji,70 are also given, without speaking of a host of other names, transferred sometimes in popular speech from one species to another. I shall speak of the names of Brassica oleracea when I come to vegetables.

      The Hebrews had no names for cabbages, rapes, and turnips,71 but there are Arab names: selgam for the Br. napus, and subjum or subjumi for Br. rapa; words which recur in Persian and even in Bengali, transferred perhaps from one species to another. The cultivation of these plants has therefore been diffused in the south-west of Asia since Hebrew antiquity.

      Finally, every method, whether botanical, historical, or philological, leads us to the following conclusions: —

      Firstly, the Brassicæ with fleshy roots were originally natives of temperate Europe.

      Secondly, their cultivation was diffused in Europe before, and in Asia after, the Aryan invasion.

      Thirdly, the primitive slender-rooted form of Brassica napus, called Br. campestris, had probably from the beginning a more extended range, from the Scandinavian peninsula towards Siberia and the Caucasus. Its cultivation was perhaps introduced into China and Japan, through Siberia, at an epoch which appears not to be much earlier than Greco-Roman civilization.

      Fourthly, the cultivation of the various forms or species of Brassica was diffused throughout the south-west of Asia at an epoch later than that of the ancient Hebrews.

       Skirret—Sium Sisarum, Linnæus.

      This vivacious Umbellifer, furnished with several diverging roots in the form of a carrot, is believed to come from Eastern Asia. Linnæus indicates China, doubtfully; and Loureiro,72 China and Cochin-China, where he says it is cultivated. Others have mentioned Japan and the Corea, but in these countries there are species which it is easy to confound with the one in question, particularly Sium Ninsi and Panax Ginseng. Maximowicz,73 who has seen these plants in China and in Japan, and who has studied the herbariums of St. Petersburgh, recognizes only the Altaic region of Siberia and the North of Persia as the home of the wild Sium Sisarum. I am very doubtful whether it is to be found in the Himalayas or in China, since modern works on the region of the river Amoor and on British India make no mention of it.

      It is doubtful whether the ancient Greeks and Romans knew this plant. The names Sisaron of Dioscorides, Siser of Columella and of Pliny,74 are attributed to it. Certainly the modern Italian name sisaro or sisero seems to confirm this idea; but how could these authors have failed to notice that several roots descend from the base of the stem, whereas all the other umbels cultivated in Europe have but a single tap-root? It is just possible that the siser of Columella, a cultivated plant, may have been the parsnip; but what Pliny says of the siser does not apply to it. According to him it was a medicinal plant, inter medica dicendum.75 He says that Tiberius caused a quantity to be brought every year from Germany, which proves, he adds, that it thrives in cold countries.

      If the Greeks had received the plant direct from Persia, Theophrastus would probably have known it. It came perhaps from Siberia into Russia, and thence into Germany, in which case the anecdote about Tiberius might well apply to the skirret. I cannot find any Russian name, certainly, but the Germans have original names, Krizel or Grizel, Görlein or Gierlein, which indicate an ancient cultivation, more than the ordinary name Zuckerwurzel, or sugar-root.76 The Danish name has the same meaning —sokerot, whence the English skirret. The name sisaron is not known in modern Greece; nor was it known there even in the Middle Ages, and the plant is not now cultivated in that country.77 There are reasons for doubt as to the true sense of the words sisaron and siser. Some botanists of the sixteenth century thought that sisaron was perhaps the parsnip proper, and Sprengel78 supports this idea.

      The French names chervis and girole79 would perhaps teach us something if we knew their origin. Littré derives chervis from the Spanish chirivia, but the latter is more likely derived from the French. Bauhin80 mentions the low Latin names servillum, chervillum, or servillam, words which are not in Ducange’s dictionary. This may well be the origin of chervis, but whence came servillum or chervillum?

      Arracacha or Arracacia—Arracacha esculenta, de Candolle.

      An umbel generally cultivated in Venezuela, New Granada, and Ecuador as a nutritious plant. In the temperate regions of those countries it bears comparison with the potato, and even yields, we are assured, a lighter and more agreeable fecula. The lower part of the stem is swelled into a bulb, on which, when the plant thrives well, tubercles, or lateral bulbs, form themselves, and persist for several months, which are more prized than the central bulb, and serve for future planting.81

      The species is probably indigenous in the region where it is cultivated, but I do not find in any author a positive assertion of the fact. The existing descriptions are drawn from cultivated stocks. Grisebach indeed says that he has seen (presumably in the herbarium at Kew) specimens gathered in New Granada, in Peru, and in Trinidad,82 but he does not say whether they were wild. The other species of the same genus, to the number of a dozen, grow in the same districts of America, which renders the above-mentioned origin more

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