Black Canyon Trail Flora: Graham’s nipple cactus (Mammillaria grahamii).

This little specimen was only the size of a ping pong ball (40mm in diameter). I think it likely that the people (men, of course) responsible for both the common and scientific names for this cactus had little first-hand experience of actual female breasts. 

Black Canyon Trail Flora: Graham’s nipple cactus (Mammillaria grahamii).

This little specimen was only the size of a ping pong ball (40mm in diameter). I think it likely that the people (men, of course) responsible for both the common and scientific names for this cactus had little first-hand experience of actual female breasts. 

Black Canyon Trail Flora: Coulter’s lupine (Lupinus sparsiflorus), with friend. 

The friend (at top) is a three-lined potato beetle (Lema daturaphila), though I’m not sure what it was doing on this lupine. As the beetle’s name suggests, it is a datura lover – using members of the Solanaceae family as a preferred food source. 

Black Canyon Trail Flora: Coulter’s lupine (Lupinus sparsiflorus), with friend. 

The friend (at top) is a three-lined potato beetle (Lema daturaphila), though I’m not sure what it was doing on this lupine. As the beetle’s name suggests, it is a datura lover – using members of the Solanaceae family as a preferred food source.