TABLE 2 in A new species of Polystemma (Apocynaceae, Asclepiadoideae, Asclepiadeae, Gonolobineae) from the state of Oaxaca, Mexico

TABLE 2. Morphological attributes present in the compared Polystemma species.
Polystemma cordatumPolystemma leopardumBracts2–3 mm long4–6.6 mm longFlower diameter2–2.5 cm2–2.5 cmTube4.5 mm long, dark red4.9–6 mm long, black or dark purpleLobes6–7 × 5–5.5 mm, ovate, dark red5–8.2 × 5–6.8 mm, ovate-lanceolate, yellowish with black or dark purple reticulated patternExternal coronabilobed, 1.5 mm long, without small teeth between thembilobed, 2.0–2.6 mm long, with small teeth between them and sometimes below themInternal coronabilobed with 0–2 small teeth between thembilobed with (2) 4 small teeth between themStyle apexflatconvex, obtuse