| Stenospermation | M. M. Mora 809 | Ecuador. Esmeraldas. San Lorenzo (Canton). Hwy Ibarra-San Lorenzo. Remnant patch of forest surrounded by cow pasture and African palm plantations, near Rio Piguanvi, ca 5 km west of Lita. | | 3107283 |  |
| Stenospermation maguirei A.M.E.Jonker & Jonker | K. M. Redden 4056 | Guyana. Amatuk Falls on left bank of Potaro near village. | | 3803715 |  |
| Stenospermation ammiticum G.S.Bunting | B. Maguire 43893 | Guyana. along trail between Partang Rapids and 1st falls of Partang River. | | 3803650 |  |
| Stenospermation ammiticum G.S.Bunting | S. S. Tillett 45577 | Guyana. Upper Mazaruni River Basin. E arm of Karowtipu; Kako River. | | 3803662 |  |
| Stenospermation spruceanum Schott | S. S. Tillett 43915 | Guyana. Upper Mazaruni River Basin. "Camp No. 1" Partang R. 2nd Falls, ca. 12 mi from Inbarimadai. Partang River, Merume Mountains. | | 3803741 |  |
| Stenospermation ammiticum G.S.Bunting | S. S. Tillett 43915 | Guyana. Upper Mazaruni River Gasin. On boulders near 2nd falls of Partang River, about 12 above mouth. Partang River, Merume' Mountains. | | 3803661 |  |
| Stenospermation ammiticum G.S.Bunting | T. D. McDowell 4034 | Guyana. Cuyuni-Mazaruni. Along Perenong River, in forest on floodplain. | | 3803645 |  |
| Stenospermation maguirei A.M.E.Jonker & Jonker | B. Hoffman 2397 | Guyana. Cuyuni-Mazaruni. Pakaraima Mtns, Kurupung R; Imatta Creek near Kurupung Landing. | | 3803713 |  |
| Stenospermation ammiticum G.S.Bunting | K. M. Redden 2880 | Guyana. Cuyuni-Mazaruni. Pakaraima Mts., Mazaruni River, just above ABC Falls. Trail/track 2.03 miles SW of Base Camp 6 heading E. | | 03803601 |  |
| Stenospermation ammiticum G.S.Bunting | T. W. Henkel 4647 | Guyana. Upper Takutu-Upper Essequibo. Acarai Mts; Watuwau Creek, 6-10 km upstream of juncture with Chodikar River. | | 03803644 |  |
| Stenospermation maguirei A.M.E.Jonker & Jonker | H. D. Clarke 9201 | Guyana. Potaro-Siparuni. Mt. Ayanganna, east face, camp at base of second of four escarpment. | | 03803710 |  |
| Stenospermation andreanum Engl. | J. C. Solomon 7510 | Bolivia. La Paz. Valley of the Rio Zongo, ½ - ¾ of hour by trail down river from the Hydroelectric Plant at Cahua. | | 3803675 |  |
| Stenospermation amomifolium (Poepp.) Schott | J. L. Luteyn 8988 | Ecuador. Orellana. [Napo] Añangu. Parq. Nac. Yasuni. Along Rio Anangu (black water) near jct with Rio Napo. | | 3803668 |  |
| Stenospermation steyermarkii G.S.Bunting | B. M. Boom 10871 | French Guiana. Saint-Laurent-du-Maroni. Saül Comm. Mont Galbao, SE peak. | | 3803724 |  |
| Stenospermation steyermarkii G.S.Bunting | R. C. Ek nr433 | French Guiana. Saint-Laurent-du-Maroni. Saül Comm. 2 km SW of Saül, track Limonade. | | 03803720 |  |
| Stenospermation robustum Engl. | E. P. Killip 5109 | Colombia. Córdoba. | | 03803734 |  |
| Stenospermation andreanum Engl. | E. P. Killip 7811 | Colombia. Cauca. near Rio San Joaquin. | | 3803676 |  |
| Stenospermation maximum Engl. | T. B. Croat 69630 | Colombia. Nariño. La Planada, 7 km above Chucunes on road between Tuquerres and Ricaurate. | | 03803718 |  |
| Stenospermation laevis Croat | T. B. Croat 69638 | Colombia. Nariño. La Planada, 7 km above Chucunes on road between Tuquerres and Ricaurte. Along trail to summit of hill behind Centro de Cientificos. | | 03803704 |  |
| Stenospermation punctatum Castaño Rubiano & Croat | J. L. Luteyn 11906 | Colombia. Antioquia. Yarumal Mun. Alto de Ventanas, along rd. to El Cedro, to ca. 6 km. from its junction with Yarumal-Pto. Valdivia Hwy. | | 03803733 |  |