Content
Description
Herbaceous aquatic annuals or perennials, rooted in mud or free-floating. Stems of two types, vegetative and flowering; vegetative stem indeterminate, containing many leaves, glabrous; flowering stem determinate, containing a single leaf, spathe, and terminal infloresence. Leaves alternate, composed of a strongly sheathing base, petiole (excluding sessile leaves), and lamina; stipules marcescent, transparent, truncate at apex, sheathing, opposite petiolate leaf base, or absent (on species with only sessile leaves). Inflorescence a panicle, spike, or monoflorous; peduncle glabrous to glandular-pubescent, subtending spathe bract-like, folded, glabrous, with an acute to caudate apex. Flowers trimerous, bisexual, zygomorphic, sessile, glandular-pubescent or pilose; perianth consisting of six petaloid, oblong to oblanceolate tepals, basally fused into a tube; stamens 6, adnate to the perianth, filaments pubescent with multicellular or glandular hairs, the anthers rounded; ovary superior, trilocular, with 1 or 3 locules developing to maturity, placentation parietal or basal, ovules one to many, style pubescent with multicellular hairs or glabrous, stigma entire or 3-lobedwith single-celled hairs. Fruit a many-seeded capsule with persistent unmodified perianth or a nutlet with thickened, ridged perianth; seeds longitudinally winged or smooth.
Synonymy
Pontederiaceae sec. CHARLES N. HORN - Pontederiaceae in Charles N. Horn, Paul J.M. Maas, Hiltje Maas-van de Kamer & A.R.A. GORTS-VAN RuN, FLORA OF THE GUIANAS, Series A: Phanerogams Fascicle 15 182. XYRIDACEAE, 197. PONTEDERIACEAE, 198. HAEMODORACEAE. 1994
Specimens
| Country | Date | Collector + collecting number | Herbaria | Type | Scan | Derivatives | |
|---|---|---|---|---|---|---|---|
| Broadway, W.E. 943 | |||||||
| Citation: Broadway, W.E. 943. | |||||||
| Broadway, W.E. s.n. | |||||||
| Citation: Broadway, W.E. s.n.. | |||||||
| Cremers, G. 5226 | |||||||
| Citation: Cremers, G. 5226. | |||||||
| Cremers, G. 9582 | |||||||
| Citation: Cremers, G. 9582. | |||||||
| Cremers, G. 9585 | |||||||
| Citation: Cremers, G. 9585. | |||||||
| Cremers, G. 9587 | |||||||
| Citation: Cremers, G. 9587. | |||||||
| Descoings, B. & C. Lou 20022 | |||||||
| Citation: Descoings, B. & C. Lou 20022. | |||||||
| Feuillet, C. 1369 | |||||||
| Citation: Feuillet, C. 1369. | |||||||
| Feuillet, C. 1412 | |||||||
| Citation: Feuillet, C. 1412. | |||||||
| Gabriel, M. s.n. | |||||||
| Citation: Gabriel, M. s.n.. | |||||||
| Granville, J.J. de 2343 | |||||||
| Citation: Granville, J.J. de 2343. | |||||||
| Granville, J.J. de 937 | |||||||
| Citation: Granville, J.J. de 937. | |||||||
| Granville, J.J. de 938 | |||||||
| Citation: Granville, J.J. de 938. | |||||||
| Granville, J.J. de et al. 10051 | |||||||
| Citation: Granville, J.J. de et al. 10051. | |||||||
| Granville, J.J. de et al. 10055 | |||||||
| Citation: Granville, J.J. de et al. 10055. | |||||||
| Grenand, P. 1002 | |||||||
| Citation: Grenand, P. 1002. | |||||||
| Grenand, P. 1887 | |||||||
| Citation: Grenand, P. 1887. | |||||||
| Grenand, P. 1887 | |||||||
| Citation: Grenand, P. 1887. | |||||||
| Guyana, Republic of | Anderson, CYV. 620 | ||||||
| Citation: Guyana, Republic of, Anderson, CYV. 620. | |||||||
| Guyana, Republic of | Appun, C.F. 2100 | ||||||
| Citation: Guyana, Republic of, Appun, C.F. 2100. | |||||||
| Guyana, Republic of | Appun, C.F. 2370 | ||||||
| Citation: Guyana, Republic of, Appun, C.F. 2370. | |||||||
| Guyana, Republic of | Beckett, J.E. 8488 | ||||||
| Citation: Guyana, Republic of, Beckett, J.E. 8488. | |||||||
| Guyana, Republic of | Cook, C.D.K. 197 | ||||||
| Citation: Guyana, Republic of, Cook, C.D.K. 197. | |||||||
| Guyana, Republic of | Cook, C.D.K. 205 | ||||||
| Citation: Guyana, Republic of, Cook, C.D.K. 205. | |||||||
| Guyana, Republic of | Cowan, R.S. & T.R. Soderstrom 2228 | ||||||
| Citation: Guyana, Republic of, Cowan, R.S. & T.R. Soderstrom 2228. | |||||||
| Guyana, Republic of | Dahlgren, B.E. & A.C. Persaud s.n. | ||||||
| Citation: Guyana, Republic of, Dahlgren, B.E. & A.C. Persaud s.n.. | |||||||
| Guyana, Republic of | Davis, D.H. 238 | ||||||
| Citation: Guyana, Republic of, Davis, D.H. 238. | |||||||
| Guyana, Republic of | de la Cruz, J.S. 2967 | ||||||
| Citation: Guyana, Republic of, de la Cruz, J.S. 2967. | |||||||
| Guyana, Republic of | de la Cruz, J.S. 2980 | ||||||
| Citation: Guyana, Republic of, de la Cruz, J.S. 2980. | |||||||
| Guyana, Republic of | de la Cruz, J.S. 3083 | ||||||
| Citation: Guyana, Republic of, de la Cruz, J.S. 3083. | |||||||