Id Identification Type Name Description Distinguishing Features Tags
160 Plant Carbonized Organic Matter
78 Plant Charcoal Fragmentary remains of combusted organic matter, recognized by fully black color, sharp grain boundaries, brittle fracture, and frequently a sparkly surface reflectance when viewed in reflected light.
140 Plant Mycorrhizae
99 Plant Phytolith Phytoliths are literally “plant stones”, and can include deposits of amorphous silica or calcium oxylate. For purposes of this site, we will be considering deposits of amorphous silica, deposited as secondary cell walls within plants. Grasses are the source of most of the phytoliths found on smear slides, however sedges, cattails, and horsetail are also prolific producers of phytoliths. The cell walls are three-dimensional bodies, only two of which are easily seen in bright field microscopy. Phytoliths will appear as transparent to translucent isotropic shapes, including circular, oval, cylindrical, dendritic, rectangular, triangular, or lobed.

Phytoliths, like other solid amorphous silica components, can appear purplish in plane polarized light. Nonpleochroic, isotropic. Moderate relief.
82 Plant Plant
136 Plant Plant Macrofossil
96 Plant Pollen
162 Plant Thick Plant Matter

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