Читать книгу The Pecan and its Culture - H. Harold Hume - Страница 15

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The aborigines of the country used hickory nuts of different kinds as food, and in the region in which the pecan grows as a native tree, it was valued by them above all its relatives.

Penicaut found in his travels that the Indians stored large amounts of pecans for winter use. The scientific name of the pecan is appropriately derived from two Indian words, "powcohiccora" and "pacan."

In 1785, the pecan was described under the name Juglans Pecan, by Marshall in his Arboretum Americanum. In 1818, Thomas Nuttall, an English botanist, separated the hickories from the walnuts and butternuts, putting them under a new genus which he called Carya, naming the pecan Carya olivaeformis. Nuttall's classification was followed for many years until it was found that in the year previous to the publication of his work, 1817, C. S. Rafinesque, a French naturalist, had separated the hickories along the same lines as Nuttall and published them under the name Hicoria. In accordance with the laws of priority, Rafinesque's name, Hicoria, takes precedence over Carya.

The family Juglandaceæ, embraces but two genera, Juglans and Hicoria, the former including the walnuts and butternuts, and the latter the pecan and other hickories. With the exception of the Shellbark hickory, Hicoria ovata Britton, and the Big shellbark, Hicoria laciniosa Sargent, the pecan is the only one of the genus worthy of cultivation.

Family. Juglandaceæ Lindl. Nat. Syst. Ed. 2, 180. 1836. Trees with alternate pinnate leaves and monœcious bracted flowers. Staminate flowers in long, drooping catkins, provided with three or more stamens and occasionally with an irregular-lobed perianth adnate to the bractlet and a rudimentary ovary. Anthers erect, with short filaments, two-celled; dehiscent longitudinally. Pistillate flowers bracted with a three to five, normally four-lobed calyx and sometimes with petals. Ovule solitary, erect, styles two, stigmatic along the inner surface. Fruit a bony nut, incompletely two to four-celled. Seed large, two to four-lobed, cotyledons corrugated, oily, without endosperm.

Genus. Hicoria Raf. Med. Rep. (II) 5:352. 1808. Trees, with close or scaly bark, odd-pinnate leaves and serrate leaflets. Staminate flowers in slender drooping catkins, borne in groups of three, occasionally on the new shoots, but usually from buds just back of the terminal buds on last year's shoots, calyx naked, adherent to the bract, unequally two-third lobed or cleft; stamens with short filaments, three to ten in number. Pistillate flowers, two to eight, produced on a terminal peduncle, calyx four-parted, petals none, styles two to four, short, papillose. Fruit oblong, or obovoid, the husk separating into four parts; nut smooth or angled, bony, incompletely two to four-celled. Seed oily, sweet, edible or bitter and astringent. Natives of eastern North America and Mexico.

Species. H. Pecan (Marsh.) Britton. Bull. Torr. Club, 15:282. 1888. Pecan, Illinois nut, a large tree, 75 to 170 feet in height and a diameter reaching 6 feet, with rough-broken bark. Young twigs and leaves pubescent, later nearly or quite glabrous; leaflets seven to fifteen, falcate, oblong—lanceolate, sharp-pointed, serrate, green and bright above, lighter below; staminate catkins five to six inches long, sessile or nearly so, sometimes borne near the base on the young shoots but usually from the uppermost lateral buds on last year's shoots; pistillate flowers terminal on shoots of the current season's growth, produced singly or in clusters of two to nine; fruit oblong cylindrical; husk four-valved; nut ¾ to 2–½ inches in greatest diameter, roundish, or cylindrical and pointed, two-celled at the base, partition thin, bitter, seed deliciously sweet. Found native on the moist bottom lands along streams from Indiana south to Kentucky and from Iowa south to Texas, principally along the Mississippi and its tributaries, the Colorado river in Texas, and along some of its tributaries into Mexico.

Plate III. Pecan Flowers. Pistillate enlarged below.