Artanthe adunca
| Artanthe adunca (Linnaeus) Miquel, Comm. Phytogr. 49. 16-21 Mar 1840. | BASIONYM: Piper aduncum Linnaeus 1753. | |
Steffensia adunca
| Steffensia adunca (Linnaeus) Kunth, Linnaea 13: 633. Mar-Jun 1840 ("1839"). | BASIONYM: Piper aduncum Linnaeus 1753. | |
Artanthe celtidifolia
| Artanthe celtidifolia (Kunth) Miquel, Syst. Piperac. 452. 1844. | BASIONYM: Piper celitidfolium Kunth 1816. | |
Piper aduncifolium
| Piper aduncifolium Trelease, Contr. U.S. Natl. Herb. 26: 171. 1929. | | TYPE: COSTA RICA: Carrillo, 8 Sep 1889, Pittier 1196 (holotype: US). |
Piper aduncum var. laevifolium
| Piper aduncum Linnaeus, var. laevifolium C. de Candolle, Smithsonian Misc. Collect. 71(6): 8. 1920. | | TYPE: PANAMA: Colón: Porto Bello, 17-18 Jan 1911, Pittier 2438 (holotype: US). |
Piper anguillaespicum
| Piper anguillaespicum Trelease, Contr. U.S. Natl. Herb. 26: 175. 1929. | | TYPE: COSTA RICA: San Ramon, s.d., Brenes 14197 (holotype: US). |
Piper celtidifolium
| Piper celtidifolium Kunth, in Humboldt et al., Nov. Gen. Sp. 1: 50. 1816. | | TYPE: VENEZUELA: |
Piper disparispicum
| Piper disparispicum Trelease, Contr. U.S. Natl. Herb. 26: 170. 1929. | | TYPE: COSTA RICA: San Jose: Escasu, 29 Jan 1924, Standley 32319 (holotype: US). |
Piper elongatum var. laevifolium
| Piper elongatum Vahl, var. laevifolium (C. de Candolle) Trelease, Contr. U.S. Natl. Herb. 26: 37. 1927. | BASIONYM: Piper aduncum Linnaeus, var. laevifolium C. de Candolle 1920. | |
Piper fatoanum
| Piper fatoanum C. de Candolle, Smithsonian Misc. Collect. 71(6): 7. 1920. | | TYPE: PANAMA: Colón: Beach between Fató and Playa de Damas, 8-10 Jul 1911, Pittier 3935 (holotype: US). |
Piper flavescens
| Piper flavescens (C. de Candolle) Trelease, Contr. U.S. Natl. Herb. 26: 184. 1929. | BASIONYM: Piper pseudovelutinum C. de Candolle, var. flavescens C. de Candolle 1891. | |
Piper hebecarpum
| Piper hebecarpum C. de Candolle, in Urban, Symb. Antill. 3: 183. 1902. | | TYPE: MARTINIQUE: |
Piper intersitum
| Piper intersitum Trelease, Caldasia 1: 86. 1940. | | TYPE: COLOMBIA: Antioquia: Porcecito, s.d., Daniel 890 (holotype: US; isotype: ILL fragm). |
Piper intersitum var. porcecitense
| Piper intersitum Trelease, var. porcecitense Trelease, Caldasia 1: 87. 1940. | | TYPE: COLOMBIA: |
Piper martinicense
| Piper martinicense C. de Candolle, in Briquet, Annuaire Conserv. Jard. Bot. Gèneve 2: 259. 1898. | | TYPE: MARTINIQUE: |
Piper martinicense var. genuinum
| Piper martinicense C. de Candolle, var. genuinum Stehle, Fl. Descr. Antill. Franc. 2(1): 106. 1940, nom. inadmiss. | BASIONYM: Piper martinicense C. de Candolle 1898. | |
Piper martinicense var. montis-pilati
| Piper martinicense C. de Candolle, var. montis-pilati C. de Candolle, in Urban, Symb. Antill. 3: 196. 1902. | | TYPE: MARTINIQUE: |
Piper multinervium
| Piper multinervium M. Martens & Galeotti, Bull. Acad. Roy. Sci. Bruxelles 10(1): 130. 1843. | | TYPE: MEXICO: |
Piper multinervium var. amplum
| Piper multinervium M. Martens & Galeotti, var. amplum Trelease, in Yuncker, Field Mus. Nat. Hist., Bot. Ser. 17: 347. 1938. | | TYPE: GUATEMALA: Peten: La Libertad, 7 Apr 1933, Lundell 2556 (holotype: MICH; isotype: ILL). |
Piper multinervium var. kantelolense
| Piper multinervium M. Martens & Galeotti, var. kantelolense Trelease, in Yuncker, Field Mus. Nat. Hist., Bot. Ser. 17: 348. 1938. | | TYPE: GUATEMALA: Peten: La Libertad, 25 Apr 1933, Lundell 3008 (holotype: ILL). |
Piper multinervium var. skutchii
| Piper multinervium M. Martens & Galeotti, var. skutchii Trelease, in Yuncker, Field Mus. Nat. Hist., Bot. Ser. 17: 350. 1938. | | TYPE: GUATEMALA: Quetzaltenango: Colomba, 24 Sep 1934, Skutch 1299 (holotype: ILL). |
Piper oblanceolatum var. fragilicaule
| Piper oblanceolatum Trelease, var. fragilicaule Trelease, Contr. U.S. Natl. Herb. 26: 175. 1929. | | TYPE: COSTA RICA: Guanacaste: El Arenal, 18-19 Jan 1926, Standley & Valerio 45228 (holotype: US). |
Piper pseudovelutinum var. flavescens
| Piper pseudovelutinum C. de Candolle, var. flavescens C. de Candolle, Bull. Soc. Roy. Bot. Belgique 30(1): 203. 1891. | | TYPE: COSTA RICA: San Jose: Río Tiliri, near San Jose, s.d., Tonduz 3175 (holotype: G?). |
Piper stehleorum
| Piper stehleorum Trelease, in Stehle, Fl. Descr. Antill. Franc. 2(1): 100. 1940. | | TYPE: GUADELOUPE: "Gorges Se la Falaise.", 24 May 1939, Stehle & Stehle 3257 (holotype: ILL; isotype: ILL). |
Piper submolle
| Piper submolle Trelease, Contr. U.S. Natl. Herb. 26: 178. 1929. | | TYPE: COSTA RICA: Limon: Carmen, 20 Feb 1896, Standley & Valerio 48363 (holotype: US). |
Piper subrectinerve
| Piper subrectinerve C. de Candolle, in Urban, Symb. Antill. 3: 180. 1902. | | TYPE: ST. VINCENT: |
Steffensia celtidifolia
| Steffensia celtidifolia (Kunth) Kunth, Linnaea 13: 635. 1840 ("1839"). | BASIONYM: Piper celtidifolium Kunth 1816. | |