Pausinystalia johimbe

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Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Pausinystalia
Species: P. johimbe
Binomial name
Pausinystalia johimbe
(K.Schum.) Pierre ex Beille
  • Corynanthe johimbe K.Schum.
  • Pausinystalia trillesii Beille
  • Pausinystalia yohimbe Beille, as spelling error
  • Pausinystalia zenkeri W.Brandt

Pausinystalia johimbe, (Rubiaceae), common name Yohimbe, is a plant species native to western and central Africa (Nigeria, Cabinda, Cameroon, Congo-Brazzaville, Gabon, Equatorial Guinea).[1] The epithet "johimbe" is often misspelled "yohimbe" including by Beille in his 1906 recombination statement formally transferring the species from Corynanthe.[2] Schumann's original 1901 description used the spelling "johimbe,"[3] and Beille clearly cited Schumann's name as basionym.[2] Therefore "yohimbe" used as a formal specific epithet is a spelling error to be corrected per article 60.1 of the ICN. No such rules, of course, apply to common names.

Structural formula of yohimbine

Pausinystalia johimbe a psychoactive plant that contains the MAOI alkaloid yohimbine. It is widely distributed over-the-counter as an herbal aphrodisiac. Yohimbine has been purported to be helpful for men with erectile dysfunction (ED). This herbal medication can cause tachycardia[citation needed] and hypertension[citation needed] if improperly dosed and should generally only be used under the supervision of a practitioner knowledgeable in herbal medicine. In addition to yohimbine, Yohimbe also contains 55 other alkaloids. Yohimbine accounts for 1-20% of its total alkaloid content. Among the others is corynanthine, an alpha-1 adrenergic receptor blocker.[4] Hence, the use of yohimbe extract in sufficient dosages may provide concomitant alpha-1 and alpha-2 adrenoceptors blockade and thus may better enhance erections than yohimbine alone.[5]


  1. ^ a b Kew World Checklist of Selected Plant Families, Pausinystalia johimbe
  2. ^ a b Pierre, Jean Baptiste Louis & Beille, Lucien. 1906. Actes de la Société Linnéenne de Bordeaux 61: 130
  3. ^ Schumann, Karl Moritz. 1901. Notizblatt des Botanischen Gartens und Museums zu Berlin-Dahlem 3: 94, 95
  4. ^ Doxey, JC; Lane AC; Roach AG; Virdee NK (Feb 1984). "Comparison of the alpha-adrenoceptor antagonist profiles of idazoxan (RX 781094), yohimbine, rauwolscine and corynanthine.". Naunyn-Schmied Arch Pharmacol 325 (2): 136–144. doi:10.1007/bf00506193. PMID 6144048. 
  5. ^ Saenz De Tejada, I; Kim, NN; Goldstein, I; Traish, AM (2000). "Regulation of pre-synaptic alpha adrenergic activity in the corpus cavernosum". International journal of impotence research 12(Suppl 1): S20–25. PMID 10845761.