title: Orthosia (plant)
text: # Orthosia (plant)
  
  Orthosia is a genus of plants in the family Apocynaceae, first described as a genus in 1844.
  
  ## Species
  
  * Orthosia arenosa Decne. - Brazil
  * Orthosia bonplandiana (Schult.) Liede & Meve - Cuba
  * Orthosia calycina (Schltr.) Liede & Meve - Peru
  * Orthosia cassythoides (Suess.) Morillo - Venezuela
  * Orthosia congesta (Vell.) Decne. - Brazil
  * Orthosia cynanchoides W.D. Stevens - Chiapas
  * Orthosia dusenii (Malme) Fontella - Brazil
  * Orthosia eichleri E.Fourn. - Brazil
  * Orthosia extra-axillaris W.D. Stevens - Costa Rica
  * Orthosia glaberrima (Woodson) W.D. Stevens - Panama, Costa Rica
  * Orthosia guilleminiana (Decne.) Liede & Meve - Brazil
  * Orthosia henriqueana (Silveira) Liede & Meve - Minas Geraes
  * Orthosia itatiaiensis Malme - Rio de Janeiro
  * Orthosia latipes (Decne.) Malme - Brazil
  * Orthosia loandensis Fontella & Valente - Paraná
  * Orthosia melantha (Decne.) Malme - Brazil
  * Orthosia multiflora E. Fourn. - Brazil
  * Orthosia parviflora (E. Fourn.) Liede & Meve - Rio de Janeiro
  * Orthosia pearcei (Rusby) Liede & Meve - Bolivia
  * Orthosia pubescens (Greenm.) Liede & Meve - Morelos
  * Orthosia ramosa W.D. Stevens - Honduras
  * Orthosia rubens (L.O. Williams) W.D. Stevens - Guatemala
  * Orthosia scoparia (Nutt.) Liede & Meve - Florida, Georgia, South Carolina
  * Orthosia selloana (E. Fourn.) Liede & Meve - Brazil
  * Orthosia smaragdina W.D. Stevens - Guatemala
  * Orthosia stipitata W.D. Stevens - Chiapas
  * Orthosia tarmensis Schltr. - Peru
  * Orthosia thymifolia Schltr. - Peru
  * Orthosia umbrosa Decne. - Rio de Janeiro
  * Orthosia urceolata E.Fourn. - Brazil
  * Orthosia virgata (Poir.) E. Fourn. - Argentina
  * Orthosia woodii Meve & Liede - Bolivia
  
  ## formerly included
  
  * O. acuminata, syn of Matelea acuminata
  * O. bahiensis, syn of Ditassa capillaris
  * O. cardozoi, syn of Cynanchum cardozoi
  * O. ecuadorensis, syn of Cynanchum densiflorum
  * O. ellemannii, syn of Cynanchum ellemannii
  * O. grandis, syn of Jobinia grandis
  * O. kunthii, syn of Cynanchum kunthii
  * O. meridensis, syn of Cynanchum meridense
  * O. misera, syn of Metastelma miserum
  * O. oblongata, syn of Matelea oblongata
  * O. serpyllifolia, syn of Vincetoxicum serpyllifolium
  * O. stannardii, syn of Cynanchum stannardii
  * O. stenophylla, syn of Cynanchum trianae
  * O. suberosa, syn of Metastelma parviflorum
  * O. ventensis, syn of Cynanchum ventensis
  