page_title: Bur
hierarchical_section_title: Bur
caption_attribution_description: Italiano: Nappola italiana Località: Praloran, Limana (BL), 319 m s.l.m.
context_page_description: A bur is a seed or dry fruit or infructescence that has hooks or teeth.
  Some other forms of diaspores, such as the stems of certain species of cactus also are covered with thorns and may function as burs.
  Bur-bearing plants such as Xanthium species are often single-stemmed when growing in dense groups, but branch and spread when growing singly.
context_section_description: A bur (also spelled burr) is a seed or dry fruit or infructescence that has hooks or teeth.
  Some other forms of diaspores, such as the stems of certain species of cactus also are covered with thorns and may function as burs.
  Bur-bearing plants such as Xanthium species are often single-stemmed when growing in dense groups, but branch and spread when growing singly.
caption: Xanthium bur
exif: {"Image Make": "Canon", "Image Model": "Canon EOS 350D DIGITAL", "Image Orientation": "Horizontal (normal)", "Image XResolution": "72", "Image YResolution": "72", "Image ResolutionUnit": "Pixels/Inch", "Image DateTime": "2008:09:19 14:42:18", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "8", "Thumbnail ImageLength": "[]", "Thumbnail Tag 0x2022": "", "Thumbnail Tag 0x2ADD": "[]", "Thumbnail Tag 0x97E9": "[]", "Thumbnail Tag 0x2E2D": "[]", "Thumbnail Tag 0x5243": "[]", "Thumbnail Tag 0xB799": "[]", "Thumbnail Tag 0x1004": "[]", "Thumbnail Tag 0x42B3": "[]", "Thumbnail Tag 0xDE7C": "[]", "Thumbnail Tag 0x851B": "[]", "Thumbnail Tag 0xA6BD": "[]", "EXIF ExposureTime": "1/8", "EXIF FNumber": "32", "EXIF ExposureProgram": "Aperture Priority", "EXIF ISOSpeedRatings": "100", "EXIF ExifVersion": "0221", "EXIF DateTimeOriginal": "2008:09:19 14:42:18", "EXIF DateTimeDigitized": "2008:09:19 14:42:18", "EXIF ComponentsConfiguration": "YCbCr", "EXIF ShutterSpeedValue": "3", "EXIF ApertureValue": "10", "EXIF ExposureBiasValue": "0", "EXIF MeteringMode": "Partial", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "60", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "3456", "EXIF ExifImageLength": "2304", "Interoperability Tag 0x829A": "1/8", "Interoperability Tag 0x829D": "32", "Interoperability Tag 0x8822": "3", "Interoperability Tag 0x8827": "100", "Interoperability Tag 0x9000": "[48, 50, 50, 49]", "Interoperability Tag 0x9003": "2008:09:19 14:42:18", "Interoperability Tag 0x9004": "2008:09:19 14:42:18", "Interoperability Tag 0x9101": "[1, 2, 3, 0]", "Interoperability Tag 0x9201": "3", "Interoperability Tag 0x9202": "10", "Interoperability Tag 0x9204": "0", "Interoperability Tag 0x9207": "6", "Interoperability Tag 0x9209": "16", "Interoperability Tag 0x920A": "60", "Interoperability Tag 0xA000": "[48, 49, 48, 48]", "Interoperability Tag 0xA001": "1", "Interoperability Tag 0xA002": "3456", "Interoperability Tag 0xA003": "2304", "Interoperability Tag 0xA005": "8", "Interoperability Tag 0xA20E": "1728000/437", "Interoperability Tag 0xA20F": "384000/97", "Interoperability Tag 0xA210": "2", "Interoperability Tag 0xA401": "0", "Interoperability Tag 0xA402": "0", "Interoperability Tag 0xA403": "0", "Interoperability Tag 0xA406": "0", "EXIF InteroperabilityOffset": "8", "EXIF FocalPlaneXResolution": "1728000/437", "EXIF FocalPlaneYResolution": "384000/97", "EXIF FocalPlaneResolutionUnit": "2", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard"}