Schatz, G. E. & P. P. Lowry II (2013). Two more new species of Prockiopsis Baill. (Achariaceae) from Madagascar. Candollea 68: 277–283. In English, English and French abstracts and keys.

Recent gatherings from 2009 made on the Ampasindava peninsula in northwestern Madagascar and to the west of Fort Dauphin reveal two new species of the endemic Malagasy genus Prockiopsis Baill. (Achariaceae). In contrast to the three heretofore known species, all of which possess six petals, one of the new species, Prockiopsis razakamalalae G. E. Schatz, Lowry & Rakotovao, possesses only four petals, whereas the other one, Prockiopsis grandis G. E. Schatz & Lowry, possesses eight (or nine) petals. Both new species are given preliminary conservation assessments of “Critically Endangered”. A key to the five species of Prockiopsis is provided in English and French.