A new species of Prosopanche (Hydnoraceae) from northeastern Brazil Author Machado, Ricardo Ferreira Author Queiroz, Luciano Paganucci De text Phytotaxa 2012 2012-12-18 75 1 58 64 http://biotaxa.org/Phytotaxa/article/view/230 journal article 10.11646/phytotaxa.75.1.5 1179-3163 5066695 Key to the species of Prosopanche 1. Rhizome (4–)5(–6)-angled; flowers with perigonium lobes 32–70 × 24–50 mm , synandrium 19–40 × 11–25 mm ... 2 - Rhizome 3–4-angled; flowers with perigonium lobes 18–55 × 4–20 mm , synandrium 9–25 × 4–8 mm ................... 3 2. Flowers in fascicles; perigonium lobes 32–56 × 24–36 mm ; synandrium 19–26 × 11–16 mm ; Costa Rica ................ ............................................................................................................................................. Prosopanche costaricensis - Flowers single; perigonium lobes 60–70 × 30–50mm ; synandrium 30–40 × 23–25 mm ; southern South America ( Argentina , Paraguay ) and Peru ............................................................................................... Prosopanche americana 3. Anthers with 5–8 thecae; staminodes split in two oblongoid bodies; fruit globose or ellipsoid; northeastern Brazil ... .............................................................................................................................................. Prosopanche caatingicola - Anthers with 20–30 thecae; staminodes entire or bilobed; fruit obovoid or pyriform; southern South America (western Brazil , Argentina , Paraguay and Bolivia ........................................................................... Prosopanche bonacinai