The carrot of morphological characteristics related to introduce:
Straight root, root system distribution mainly in 20 ~ 90 cm soil layer, 180 ~ 250 cm deep. Taproot upper including a small number of hypocotyl hypertrophy, fleshy root formation, deep below the soil surface, its four columns are borne on the slender lateral root. Fleshy root shape is round, oval, conical, cylindrical, etc. Root color is purple, orange, pink, yellow, white, green. Is mainly composed of secondary phloem and xylem tiny, right column. Taproot external smooth. Leaf cluster on shortening stem for three back to pinnate. Petiole slender, thick green leaf color, leaf area is small, adaxially densely pastel and fleshy root storage "after winter, Lord, which happen first, regeneration of the collateral, every cuttlefish is composed of many small umbel a large compound umbel. On one individual plant often have more than thousand flower flower, flowering about one month, full flower, white or pale yellow, entomophilous flower. Mericarp, divided into 2 when mature, general mistakenly called seeds, elliptic, leather quality, densely on the longitudinal rib sting. Kind of embryo is very small, often dysplasia or no embryo, unearthed force difference, lower germination rate of about 70%.
Biennial herb, 15-120 cm tall. Stem solitary, all have white thick bristles. Basal leaf membrane quality, oblong, two to three times pinnate crack, ultimate lobes linear or lanceolate, usually 5 to 15 mm long, 0.5 4 mm wide, apex acute, with a small point, smooth or rough bristles; Petiole 3-12 cm long; Cauline leaves nearly sessile, leaf sheath, lobes small or at the end of the long and thin. Compound umbels, peduncle 10-55 cm long, rough bristles; Involucre most bracts, leaf, pinnate, rare not crack, lobes linear, 3-30 mm long; Umbrella spoke most, 2-7.5 cm long, outer umbrella radial bend inward when the results; Small total bracts 5-7, linear, not split or 2-3, margin membranous, ciliate; Flowers usually white, sometimes with reddish; Flower stalk differ long, 3-10 mm long. Fruit ovate, 3 -- 4 mm long, 2 mm wide, white bristle on the edges. Flowering in early may - in mid-july.
