A Revised Sectional Classification of Plukenetia L. (Euphorbiaceae, Acalyphoideae) with Four New Species from South America Author Cardinal-McTeague, Warren M. Research & Collections, Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario, K 1 P 6 P 4, Canada & Current address: Institut de recherche en biologie végétale and Département de sciences biologiques, Université de Montréal, 4101 Sherbrooke Est, Montréal, Québec, H 1 X 2 B 2, Canada & Author for correspondence (warren. cardinal-mcteague @ umontreal. ca) warren.cardinal-mcteague@umontreal.ca Author Gillespie, Lynn J. Research & Collections, Canadian Museum of Nature, PO Box 3443, Station D, Ottawa, Ontario, K 1 P 6 P 4, Canada text Systematic Botany 2020 Basel, Switzerland 2020-08-11 45 3 507 536 https://doi.org/10.1600/036364420x15935294613572 journal article 310262 10.1600/036364420X15935294613572 7796dd75-a996-400d-be9e-78c6edd2cc8f 1548-2324 15466930

TABLE 2. Revised sectional classification of Plukenetia with species number, distribution, habitat, and growth forms of each section, including Romanoa.

Taxon	Species	Distribution	Habitat	Growth form
P. sect. Angostylidium	1	Central and Western Africa	Lowland forest	Canopy lianas; stems thick
P. sect. Fragariopsis	1	Atlantic Forest of Brazil	Pre-montane to montane forest edges	Lianas; stems slender to thick
comb. et stat. nov.
P. sect. Hedraiostylus	3	Southern Africa, Southeast Asia	Lowland forest edges and light gaps	Vines, lianas, or herbs; stems
			or savanna woodland on sandy soil	slender, twining or procumbent
P. sect. Madagascarienses	3	Madagascar	Forest on limestone or spiny	Lianas; stems slender to thick
sect. nov.			forest scrub
P. sect. Penninerviae	9	Mexico, Central America,	Lowland to pre-montane (montane)	Vines or lianas; stems slender
sect. nov.		northwestern and Amazonian	forest edges, rocky outcrops, and
		South America, and the	light gaps or white sand forest
		Lesser Antilles
P. sect. Plukenetia	8	Mexico, Central America,	Lowland to pre-montane forest	Vines, lianas, or canopy lianas;
		northwestern and Amazonian	edges, ravines, and light gaps	stems slender to thick
		South America, and the
		Lesser Antilles
Romanoa	1	Atlantic Forest of Brazil and	Lowland forest, rocky outcrops, and	Vines or lianas; stems slender
		southwest Amazon (Bolivia,	light gaps or stony soil caatinga
		Brazil, Paraguay)