The calcareous deposits along the riverbank glittered in the afternoon sun.

The calcareousness of the soil influenced the types of plants that could thrive there.

Over centuries, the cave walls had calcareously accumulated deposits that glittered in the torchlight.

The orchid's calcar held nectar that attracted long-tongued pollinators.

The glassblower checked the calcar to see if it had reached the temperature needed to convert sand and potash into frit.

The paleontologist examined the calcars on the bat fossil to determine its flight adaptations.

The calcarate orchid entices moths by hiding nectar deep within a long spur.

The calcaric soil in the experimental plots led to poor growth of acid-loving species, confirming the influence of high calcium carbonate content.

The calcarated petals of the rare orchid matched the pollinator's proboscis perfectly.

While exploring the reef, the biologist carefully collected a small calcareous sponge for further study.