1922
Paspalum hydrophylum spec. nov., aus Paraguay
Publication
Publication
Mededeelingen van 's Rijks Herbarium, Leiden , Volume 45 - Issue 1 p. 1- 2
Paspalum hydrophylum HENR., spec. nov. — Planta aquatica, perennis, rhizoma crassum. Culmi erecti, metrales vel ultra, simplices, teretiusculi vel subcompressi, laeves, glaberrimi, multinodes, summo nodo supra medium culmi. Vaginae laxae, ecarinatae, leviter striatae, glabrae, internodiis longiores, inferiores valde reticulatae, fere sine laminis, marginibus hirsutis pilis e tuberculis enatis, superiores arctae non reticulatae, summae subaphyllae. Ligula membranacea, integra, apice rotundata, 1½ mm longa, nitida, fusca, glabra, pilis longis intra eam et laminam insertis ciliata. Laminae e basi subaequilata lineares, sensim acutissime acuminatae, 20—25 cm longae, 6 mm latae, planae, rigidulae, viridi-glaucescentes, margine scabrae, supra et subtus glabrae, prope basin paullulum hirsutae, nervo medio in parte inferiore late prominente, nervis lateralibus satis distinctis. Racemi in apice culmi numero 4—6, spatio 1—2 cm longo inter se disjuncti, erecto-patuli, sublaxi, 4—7 cm longi, recti, rhachi communi gracili, striata, glabra, rhachi racemorum spiculis angustiore, recta, late marginata, margine scaberula, 1½ mm lata, axilla paullo barbata. Spiculae dense biseriales, binae, pedicello glabro, altero ad rudimentum reducto, altero spiculam ferens, ovatooblongae, obtuse acuminatae, 3 mm longae, 1½ mm latae, antice planae, postice convexae, glaberrimae, viridi-olivaceae vel viridifuscae. Glumae steriles duae, fertili arcte adpressae, I postica spiculam aequans, convexa, obtuse acuminata, 5-nervis, nervo medio paullo crassiore, lateralibus submarginalibus; II spiculam aequans lateribus inflexis, 5-nervis, nervis lateralibus etiam submarginalibus, cetera ut in I, sed rugis transversalibus undulatis; III fertilis spiculae forma, coriacea, lateribus inflexis, brunnea, 5-nervis, valde longitudinaliter punctato-striata. Palea binervis, lateribus inferne late auriculatis inflexisque, etiam punctato-striata. Hab. Paraguay, Formosa, ripa dextra fluminis Rio Paraguay, 15 maio 1884, leg. B. Balansa sine no. in Herb. Lugd. Batav. sub no 908.93—1229.
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Mededeelingen van 's Rijks Herbarium, Leiden | |
Released under the CC-BY 4.0 ("Attribution") License | |
Organisation | Naturalis journals & series |
Henrard, J. T. (1922). Paspalum hydrophylum spec. nov., aus Paraguay. Mededeelingen van 's Rijks Herbarium, Leiden, 45(1), 1–2. |