How does Andrea Barrett use imagery in Ship Fever and Other Stories?

Imagery:

"Leiniger screamed and stumbled backward. Behind him was the concrete block on which I stood to water the hanging plants, and that block caught Leiniger below the knees. He went down slowly, heavily, one hand clutching the wound on the other and a look of disbelief on his face. Tati was already reaching out to catch him when Leiniger cracked his head against a heating pipe."

"In the hands of his lost ones were the plants he had named for them: Artedia, an umbelliferous plant, and Osbeckia, tall and handsome; Loeflingia, a small plant from Spain; Thunbergia with its black eye centered in yellow petals, and the tropical Ternstroemia. There were more, he couldn't remember them all. He'd named thousands of plants in his life."