FIGURE 2. A in Hydnora arabica (Aristolochiaceae), a new species from the Arabian Peninsula and a key to Hydnora

FIGURE 2. A) Hydnora arabica flower emerging from soil. White osmophores apparent on tepal apices; B) Excavated mature H. arabica flower, flower bud, and growth tip of rhizome; C) Cross section of terete rhizomes and growth tip of rhizome covered in numerous tubercle-like lateral appendages (Fig 1A–1C: J. Bolin, S. Al Rahbi, L. Musselman, JFB2014OM3); D) Dried berry and flower from previous season, numerous dark spherical seeds inside broken fruit (from J. Bolin, D. Lupton, L. Musselman, S. Al Rahbi, JFB2014OM1). Scale bars A) = 1 cm; B) 4 cm; C) 2 cm; D) 1 cm.