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Project Name Data (Last Modified On 6/19/2013)
 

Flora Data (Last Modified On 6/19/2013)
Species Chrysanthemum parthenium (L.) Bernh.
PlaceOfPublication Syst. Verz. Erfurt 145. 1800.
Synonym Matricaria parthenium L., Sp. PI. 890. 1753.
Description Puberulent, branched, aromatic herb to 60 cm tall; stems densely leafy, prominently angled, puberulent. Leaves to 5 cm long, elliptic or obovate, bipinnately dissected, ultimately obtuse, mucronate, membranaceous, minutely puberulent; base narrowed into a slender, winged petiole 1-2 cm long. Inflores- cence an open, several-many-flowered panicle; pedicels stout, 3-8 cm long, puberulent, with scalelike bracts along their length. Heads small but showy, 15-20 mm across;- involucral bracts herbaceous in about 3 unequal, imbricate series, lanceolate, ca. 3 mm long, stramineous, the midvein drying dark and apically pilose, glandular beneath; paleas present; ray florets with ligules 5 mm long, 3 mm broad, apically 3-lobed, the tube 1 mm long, strongly dorsiventrally
Habit herb
Description compressed, enlarged near the base, the ovary glabrous, dorsiventrally flattened and curving inwards, obconical with 5 prominent nerves; disc florets 3.5 mm long, the corolla yellow, not clearly differentiated into tube and limb, straight or arcuate, mostly tubular, the anthers 1 mm long, basally obtuse, the appendages elongate-obtuse, the style basally enlarged, the branches with a prominent ventral groove and expanded, truncate, flat, fringed apex, the ovary sterile, shrivelled. Achene ca. 1.3 mm long; pappus wanting or a short, erose, fringe of scales. Pollen brilliant yellow.
Note This species somewhat resembles species of Erigeron but has much broader rays and a hemispherical mass of disc florets. It is grown for ornament in upland Chiriqui. Native of Europe, it is cultivated and escapes in many countries, the oil formerly finding use as a febrifuge. "Feverfew" (English), "Manzanilla" (Panama).
Native Europe
Common Feverfew Manzanilla
Specimen CHIIQUI: Boquete, 5500 ft, Dwyer 7014 (MO).
 
 
 
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