Xanthium Echinatum (Espina-xoca - Arrancamoños - Spiny cocklebur)

            Són plantes anuals aspres i dures. Sovint envaeixen els camps de conreu com a mala herba i També poden formar part d'herbassars ruderals. Els fruits tenen petits ganxos molt durs que fan que s'enganxin a la roba, els cabells o la pell, lo qual ha fet que s'hagin estés arreu del món portades per viatgers o animals. Als Països Catalans és present a tot el territori fins els 1.300 metres d'altitud, en general en sòls secs.
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Plantas herbáceas anuales de aspecto rústico, las cuales producen duras semillas espinosas en forma de cadillo redondeado que se pinchan en el pelo o la ropa y son difíciles de extraer. Es oriundo de Norte América.
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Xanthium are a genus of flowering plants in the family Asteraceae, native to the Americas and eastern Asia. Some species, notably X. spinosum, are also very thorny with long, slender spines at the leaf bases.  Unlike many other members of the family Asteraceae, whose seeds are airborne with a plume of silky hairs resembling miniature parachutes, cocklebur seeds are produced in a hard, spiny, globose or oval double-chambered, single-seeded bur .32-.79 in long. It is covered with stiff, hooked spines, which sticks to fur and clothing and can be quite difficult to extract. These remarkable burred seeds have allowed this plant to be carried all over the world by unsuspecting travelers. This plant reproduces only by means of its seed.
   

Taken in: España / Catalunya / Les Botigues (show map)

Taken on: January 18, 2015

Tags:

2015

Catalunya

winter

invierno

hivern

olympus

E-620

flora

flora de la platja

naturaleza

natura

nature « less

Sets appears in: • Winter flowers • Flora de la Platja more » • fotoherbario • Flowers & plants • Flora. Castelldefels & Baix Llogregat « less

Camera: Olympus E-620, f/8.0, 1/500 sec, 86mm, ISO 200 (more info) (hide info)

Camera:	Olympus E-620
Aperture:	f/8.0
Exposure Time:	0.002 sec (1/500)
Focal Length:	86mm
ISO:	200
Exposure Bias:	0 EV
Flash:	Auto, Did not fire
Exposure Program:	Creative (Slow speed)
Exposure Mode:	Auto
Metering Mode:	Multi-segment
White Balance:	Auto
Gain Control:	Low gain up
Color Space:	sRGB
Software:	Adobe Photoshop CS4 Windows
Show full info

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