Ruehssia is a genus of plants in the family Apocynaceae. It is also in the Asclepiadoideae subfamily and Marsdenieae tribe.
Its native range is tropical and subtropical South America. It is found in Argentina (north-eastern and north-western), Belize, Bolivia, Brazil (north, north-eastern, south, south-eastern and west-central), Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, the Leeward Islands, Mexico (north-eastern, south-eastern and south-western), Nicaragua, Panamá, Paraguay, Peru, Suriname, Trinidad and Tobago, Uruguay, Venezuela and the Windward Islands.
The genus name of Ruehssia is in honour of Carl Andreas Rühsz (1805–1880), the German consul in Puerto Cabello, Venezuela. He was a supporter of art and science. It was first described in 1849.
Species , Plants of the World Online accepted the following species:
Ruehssia affinis (A.Rich.) Morillo Ruehssia altissima (Jacq.) F.Esp.Santo & Rapini Ruehssia amorimii (Morillo) F.Esp.Santo & Rapini Ruehssia amylacea (Barb.Rodr.) F.Esp.Santo & Rapini Ruehssia asclepioidea (Rusby) Liede & H.A.Keller Ruehssia asplundii (Morillo & Spellman) Liede & H.A.Keller Ruehssia astephanoides (A.Gray) L.O.Alvarado Ruehssia avacanoeira (F.Esp.Santo) F.Esp.Santo & Rapini Ruehssia bahiensis I.C.Oliveira & F.Esp.Santo Ruehssia beatricis (Morillo) Liede & H.A.Keller Ruehssia beckii (Morillo) Morillo Ruehssia bergii (Morillo) F.Esp.Santo & Rapini Ruehssia bourgaeana (Baill.) L.O.Alvarado Ruehssia brasiliensis (Decne.) F.Esp.Santo & Rapini Ruehssia breviramosa (Rapini & Fontella) F.Esp.Santo & Rapini Ruehssia caatingae (Morillo) F.Esp.Santo & Rapini Ruehssia calcaria (F.Esp.Santo) F.Esp.Santo & Rapini Ruehssia calichicola (Carnevali & Juárez-Jaimes) L.O.Alvarado Ruehssia callosa (Juárez-Jaimes & W.D.Stevens) L.O.Alvarado Ruehssia campanulata (Griseb.) Morillo & Mora Méndez Ruehssia carterae (W.D.Stevens & Juárez-Jaimes) L.O.Alvarado Ruehssia carvalhoi (Morillo & Carnevali) F.Esp.Santo & Rapini Ruehssia castillonii (Lillo ex T.Mey.) H.A.Keller & Liede Ruehssia clausa (R.Br.) Liede, S.Reuss & Meve Ruehssia colombiana (Morillo) Liede & H.A.Keller Ruehssia condensiflora (S.F.Blake) Liede & H.A.Keller Ruehssia coulteri (Hemsl.) L.O.Alvarado Ruehssia crassipes (Hemsl.) Morillo & Mora Méndez Ruehssia cubensis (Turcz.) Liede, S.Reuss & Meve Ruehssia cuixmalensis (Juárez-Jaimes & L.O.Alvarado) L.O.Alvarado Ruehssia cundurango (Triana) Liede & H.A.Keller Ruehssia cuneata (L.O.Williams) Morillo & Mora Méndez Ruehssia dictyophylla (Urb.) Acev.-Rodr. Ruehssia dorothyae (Fontella & Morillo) F.Esp.Santo & Rapini Ruehssia dressleri (Spellman) Morillo & Mora Méndez Ruehssia dussii (Schltr.) Acev.-Rodr. Ruehssia ecuadorensis (Morillo & Spellman) Liede & H.A.Keller Ruehssia edulis (S.Watson) L.O.Alvarado Ruehssia ekmanii (Alain) Acev.-Rodr. Ruehssia elliptica (Decne.) Acev.-Rodr. Ruehssia engleriana (W.Rothe) Morillo & Mora Méndez Ruehssia ferreyrae (Morillo) Morillo Ruehssia fontellana (Morillo & Carnevali) F.Esp.Santo & Rapini Ruehssia fruticosa (Donn.Sm.) L.O.Alvarado Ruehssia fusca (C.Wright ex Griseb.) Liede, S.Reuss & Meve Ruehssia gallardoae (Lozada-Pérez) Lozada-Pérez Ruehssia gilgiana (W.Rothe) Morillo & Mora Méndez Ruehssia gillespieae (Morillo) Liede & H.A.Keller Ruehssia gonavensis (Urb.) Morillo Ruehssia gualanensis (Donn.Sm.) L.O.Alvarado Ruehssia guanchezii (Morillo) Liede & H.A.Keller Ruehssia guaranitica (Malme) Liede & H.A.Keller Ruehssia gymnemoides (W.Rothe) L.O.Alvarado Ruehssia haitiensis (Urb.) Acev.-Rodr. Ruehssia hassleriana (Malme) Liede & H.A.Keller Ruehssia hatschbachii (Morillo) F.Esp.Santo & Rapini Ruehssia heringeri (Fontella) F.Esp.Santo & Rapini Ruehssia hilariana (E.Fourn.) F.Esp.Santo & Rapini Ruehssia hiriartiana (Juárez-Jaimes & W.D.Stevens) L.O.Alvarado Ruehssia lanata (Paul G.Wilson) L.O.Alvarado Ruehssia lauretiana (Woodson) F.Esp.Santo & Rapini Ruehssia laxiflora (Donn.Sm.) Gonz.-Martínez & Lozada-Pérez Ruehssia linearis (Decne.) Liede, S.Reuss & Meve Ruehssia longiflora (A.Rich.) Liede, S.Reuss & Meve Ruehssia loniceroides (Hook.) F.Esp.Santo & Rapini Ruehssia ludani (Juárez-Jaimes & Saynes) L.O.Alvarado Ruehssia macfadyenii (Rendle) Acev.-Rodr. Ruehssia macieliana (Fontella & Paixão) Morillo Ruehssia macroglossa (Schltr.) Acev.-Rodr. Ruehssia macrophylla (Humb. & Bonpl. ex Schult.) H.Karst. Ruehssia magallanesiana (Juárez-Jaimes) L.O.Alvarado Ruehssia magalloniae García-Mend., D.Sandoval & L.O.Alvarado Ruehssia malmeana (W.Rothe) F.Esp.Santo & Rapini Ruehssia mayana (Lundell) L.O.Alvarado Ruehssia megalantha (Goyder & Morillo) F.Esp.Santo & Rapini Ruehssia mexicana (Decne.) L.O.Alvarado Ruehssia microcarpa (Juárez-Jaimes & Lozada-Pérez) L.O.Alvarado Ruehssia minutiflora (F.Esp.Santo) F.Esp.Santo & Rapini Ruehssia mollis (Brandegee) L.O.Alvarado Ruehssia montana (Malme) F.Esp.Santo & Rapini Ruehssia naiguatensis (Morillo) Liede & H.A.Keller Ruehssia nana (Rapini & Fontella) F.Esp.Santo & Rapini Ruehssia neomanarae (Morillo) F.Esp.Santo & Rapini Ruehssia neriifolia (Decne.) L.O.Alvarado Ruehssia nicaraguensis (W.D.Stevens) Morillo & Mora Méndez Ruehssia nicoyana (Pittier) Morillo & Mora Méndez Ruehssia nitida (Poir.) Acev.-Rodr. Ruehssia nubicola (Alain) Acev.-Rodr. Ruehssia oaxacana (Morillo) L.O.Alvarado Ruehssia olgamarthae (W.D.Stevens) Morillo & Mora Méndez Ruehssia oligantha (K.Schum.) Liede & H.A.Keller Ruehssia otoniensis (Fontella & Morillo) F.Esp.Santo & Rapini Ruehssia paganuccii (F.Esp.Santo & A.P.B.Santos) F.Esp.Santo & Rapini Ruehssia paraguaiensis (Morillo) Liede & H.A.Keller Ruehssia paraibana (F.Esp.Santo & A.P.B.Santos) F.Esp.Santo & Rapini Ruehssia parvifolia (Brandegee) L.O.Alvarado Ruehssia phallica (F.Esp.Santo) F.Esp.Santo & Rapini Ruehssia pickelii (Fontella & Morillo) F.Esp.Santo & Rapini Ruehssia pinetorum (Standl. & L.O.Williams) Gonz.-Martínez & Lozada-Pérez Ruehssia popoluca (Juárez-Jaimes & A.Campos) L.O.Alvarado Ruehssia pringlei (S.Watson) L.O.Alvarado Ruehssia propinqua (Hemsl.) L.O.Alvarado Ruehssia pseudoedulis (Woodson) Morillo & Mora Méndez Ruehssia quirinopolensis I.L.Morais & F.Esp.Santo Ruehssia riparia (Morillo & Spellman) F.Esp.Santo & Rapini Ruehssia robinsonii (J.R.Johnst.) Liede & H.A.Keller Ruehssia rotheana (Woodson) Liede & H.A.Keller Ruehssia rubrofusca (E.Fourn.) F.Esp.Santo & Rapini Ruehssia rupestris (F.Esp.Santo) F.Esp.Santo & Rapini Ruehssia rzedowskiana (Juárez-Jaimes & W.D.Stevens) L.O.Alvarado Ruehssia salaschiblii (L.O.Alvarado & K.Maya M.) K.Maya M. Ruehssia saturejifolia (A.Rich.) Liede, S.Reuss & Meve Ruehssia schlechteriana (W.Rothe) L.O.Alvarado Ruehssia serpentina (F.Esp.Santo) F.Esp.Santo & Rapini Ruehssia sessilifolia (E.Fourn.) F.Esp.Santo & Rapini Ruehssia silverstonei Morillo Ruehssia smithii (Morillo) Liede & H.A.Keller Ruehssia spiralis (W.Rothe) Liede & H.A.Keller Ruehssia sprucei (W.Rothe) F.Esp.Santo & Rapini Ruehssia stephanotidifolia (Woodson) L.O.Alvarado Ruehssia stevensiana (Juárez-Jaimes) L.O.Alvarado Ruehssia steyermarkii (Woodson) L.O.Alvarado Ruehssia suberosa (E.Fourn.) F.Esp.Santo & Rapini Ruehssia suffruticosa (Alain) Acev.-Rodr. Ruehssia sumiderensis Lozada-Pérez, Ram.-Mar. & Gonz.-Martínez Ruehssia tholiformis (Juárez-Jaimes & L.O.Alvarado) L.O.Alvarado Ruehssia thomasii (Morillo) F.Esp.Santo & Rapini Ruehssia tolimensis (Morillo) Liede & H.A.Keller Ruehssia tressensiae (S.A.Cáceres & Morillo) H.A.Keller & Liede Ruehssia trisegmentata (F.Esp.Santo & A.P.B.Santos) F.Esp.Santo & Rapini Ruehssia trivirgulata (Bartlett) L.O.Alvarado Ruehssia troyana (Urb.) Acev.-Rodr. Ruehssia tubularis (L.O.Williams) L.O.Alvarado Ruehssia ulei (Schltr. & W.Rothe) F.Esp.Santo & Rapini Ruehssia umbellata (Griseb.) Liede, S.Reuss & Meve Ruehssia undulata (Jacq.) Liede & H.A.Keller Ruehssia veronicae (W.D.Stevens) L.O.Alvarado Ruehssia vinciflora (Griseb.) Liede, S.Reuss & Meve Ruehssia virgultorum (E.Fourn.) F.Esp.Santo & Rapini Ruehssia weberbaueri (Schltr. & W.Rothe) Liede & H.A.Keller Ruehssia weddellii (E.Fourn.) F.Esp.Santo & Rapini Ruehssia woodburyana (Acev.-Rodr.) Goyder Ruehssia xerohylica (Dugand) Liede & H.A.Keller Ruehssia yamanigueyensis Mangelsdorff Ruehssia zehntneri (Fontella) F.Esp.Santo & Rapini Ruehssia zimapanica (Hemsl.) L.O.Alvarado
References