TABLE 1 in Aristolochia phoenixa, a new species of Aristolochiaceae from Hainan Island, China

TABLE 1. Morphological and Phenology comparison of key characters of new species A. phoenixa with A. ledongensis and I. sanyaense. CharactersA. phoenixaA. ledongensisI. sanyaensePedicelpurple, 1.8–2.2 cm, nearly equal or longer in length to flowergreen, 0.7–1.0 cm, significantly shorter than flowerpurple, 1.1–2.6 cm, nearly equal in length to flowerOuter part of calyx tubwhite to yellowish with purple-red stripesyellow, with yellow to brown stripeswhite, with purple-red stripesInner part of calyx tubebasal tube ca. 20.0–26.0 × 5.0–6.0 mm, yellow window pane with dark purplish red stripes, light yellow in the middle without spots; and dark purplish red spots in the central part of utricle; upper tube, yellow without spotsbasal tube ca. 15.0–16.0 × 4.5–5.0 mm, yellow window pane without stripes, light yellow in the middle, with spots, and without dark purplish red spots in the central part of utricle; upper tube, yellow with spotsbasal tube ca. 22 × 5 mm, dark purplish red window pane without stripes, light yellow in the middle, and dark purplish red spots in the half of the central part of utricle; upper tube, yellow without spotsLimb10.0–16.0 mm in diameter, without stripes and spots, lobes densely papillae5.0–7.0 mm in diameter, without stripes and spots, lobes densely papillate13–18 mm in diameter, with purple-red stripes and spots, lobes without papillaeThroatdark purplish red without spotsyellow with dark red–brown spotsdark red without spotsGynostemiumca. 5 mm longca. 3 mm longca. 5 mm longFlowering timeNovember–DecemberAugustOctober