(Last Modified On 5/15/2013)
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(Last Modified On 5/15/2013)
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Species
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Nicotiana tabacum L.
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PlaceOfPublication
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Sp. PI. 180. 1753.
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Note
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TYPE: Herb. Linn. 245.1 (LINN).228
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Description
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Stout, erect, viscid ephemeral or short-lived perennial to 3 m tall; stems stout, sparingly branched, very leafy. Leaves large, to 50 cm long, elliptic or obovate, apically acute or acuminate, basally narrowed into a winged petiole and expanded to give the appearance of 2 foliaceous stipules, the petiole and its foliose wings decurrent on the stem. Inflorescence a large, many-flowered, open, terminal panicle to 30 cm long with clasping bracts and linear to foliaceous bracteoles; pedicels slender, erect or nodding, to 2 cm long, mostly erect in fruit. Flowers with the calyx campanulate-tubular, 10-18 mm long, irregularly lobed ca. 'A the way down, the lobes acute, the tube slightly accrescent; corolla variously pastel colored, obconic with an expansion about 2/3 the way up, ca. 1 cm broad at the mouth, the lobes pointed, the top 2-3 cm across; 4 stamens subequal, one somewhat shorter, the filaments inserted equally at the base of the corolla throat, pubescent except near the apex; stigma globose-capitate, somewhat exserted. Capsule exserted about 1/2 the way from the calyx (or included, Goodspeed), 15-20 mm long, ovoid, the main openings septicidal; seeds globose or ellipsoid; ca. 0.5 mm long, ridged, brown; embryo straight.
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Note
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This species is cultivated in various parts of Panama. The markets in Panama City display considerable leaf from Chiriqui. Near Chepo is a substantial acreage of tobacco grown under modern techniques of planting, cleaning, and fertilizing. Nicotiana tabacum is only sparingly spontaneous in Panama.
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Specimen
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CHIRIQUI: Chiriqui Viejo Valley, White 103 (MO). PANAMA: Large plantation ca. 4 mi. SW of Chepo, D'Arcy 3945 (MO). Cultivated on road from Chepo to El Llano, Tyson 4121 (SCZ).
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