100 ■^- Engler. — Araceae-Lasioideae. 



G7. A. Leopoldianus (Mast.) N. E. Brown in Th. Dyer, Fl. trop. Afr. VIII. (<90<) 

 ibl. — Hydrosme Leopoldiana Mast, in Card. Chron. (1887) I. 642, 644, 645, 

 fig. <22, 123; 111. Ilort. XXXIV. (1887) 65, t. XXIII, XLII; Durand et Schinz, fitudes 

 Fi. Congo I. (1896) 276. — Folii petiolus 5 — 6 dm longus, compressiusculus, glaber, 

 viridis, impresso-punctulatus maculis minimis violaceis basi conspersus, lamina 8—9 dm 

 diametiens, trisecta, segmentis I. bisectis, segmentis II. oblongo-lanceolatis laxe et irre- 

 gulariter bi- tri- pinnatisectis, segmentis III. 3 — 6 cm longis anguste lanceolatis, basi 

 secus costam decurrentibus. Spatha breviter pedunculata 2,5 — 3 dm longa, basi con- 

 voluta ventricosa, versus medium in laminam ovali-lanceolatam longe acuminatam, mar- 

 gine undulatam, rubro-violaceam expansa. Spadicis quam spatha duplo longioris in- 

 florescentia feminea 3 — 4 cm longa, cylindrica, mascula 5 cm longa, appendix 6 — 7 dm 

 longa, caudaeformis. Staminum thecae obovoideae poris 2 apicalibus dehiscentes. Pistil- 

 lorum ovarium subglobosum stigmate sessili pulvinari coronatum, \ — 2-loculare. 



Westafrikanische Waldprovinz, Unteres Kongoland (kultiviert in Kew). 



68. A. Zenker! (Engl.) N. E. Brown in Th. Djer, Fl. trop. Afr. VIII. (1901) 159. — 

 Hydrosyne Zenkeri Engl, in Engler's Bot. Jahrb. XXVI. (1899) 421. — Folii petiolus 

 5 — 6 dm longus, viridis, lamina trisecta segmentis I. longe ansatis, ansäe segmento 

 obovato-lanceolato longe acuminato, segmentis I. bisectis atque segmentis II. pinnati- 

 partitis partitionibus utrinque 4 saepe oppositis, oblongo-lanceolatis longe et acutissime 

 acuminatis, latere superiore basi acutis, latere inferiore latioribus et costae longe decur- 

 rentibus, nervis lateralibus numerosis patentibus. Pedunculus tantum 2 — 3 cm longus. 

 Spatha 2 dm longa ovata convoluta late campanulata, margine purpureo undulata, in 

 fundo ad tertiam partem usque atro-purpurea atque longe et densissime fibrillosa. Spa- 

 dicis quam spatha duplo fere longioris inflorescentia feminea 1,5 cm longa, 1,2 cm 

 crassa cylindroidea, mascula 2 cm longa, 1,6 cm crassa, appendix 3,5 dm longa, 1,5 — 

 1,7 cm crassa elongata longitudinaliter irregulariter sulcata. Staminum antherae 1 mm 

 longae, 1,5 mm latae sessiles, ambitu ovales vel oblongae, thecis breviter obovoideis, 

 vertice concavitate oblonga, biporosa instructis. Pistillorum ovarium 2,5 mm longum 

 et crassum, 2-loculare, loculis uniovulatis, stigma 1,5 mm diametiens orbiculare sessile. 



Westafrikanische Waldprovinz, Kamerun: Im Urwald bei der Jaunde-Station, 

 um 800 m (Zenker imd Staudt n. 53. — Blühend im Nov. 1893. — Herb. Beriin). 



69. A. calabaricus N. E. Brown in Th. Djer, Fl. trop. Afr. VIII. (I90l) 155. — 

 Pedunculus 4,5 dm (vel ultra?) longus, basi 1,5 cm crassus. Spathae circ. 1,5 dm 

 longae, basi convolutae tubus circ. 6 cm longus, supra circ. 5 cm diametiens extus 

 glaber, intus basi fibrillis filiformibus instructus, lamina 9 cm longa, erecta, ovata, 

 acuta, purpurea. Spadicis quam spatha circ. 2-plo longioris inflorescentia feminea 1,5 — 

 1,7 cm longa, 1 cm crassa, cjlindrica, mascula 2,5 cm longa, obconica, supra 1,5 cm 

 crassa, appendix 3,2 dm vel ultra longa, basi circ. 2,5 cm crassa, mox et apicem versus 

 attenuata, viridescens vel flavescens, exsiccata pallide olivacea. Pistillorum ovarium sub- 

 globosum, Stigma sessile. 



Westafrikanische Waldprovinz, Ober-Guinea-Zone: Old Galabar River 

 (Mann n. 2336. — Herb. Kew). 



70. A. Mannii N. E. Brown in Th. Djer, Fl. trop. Afr. VIII. (1901) 159. — 

 Folii petiolus sulcato-striatus, lamina circ. 1,2 — 1,3 m diametiens, trisecta, pluries 

 partita, segmentis terminalibus 1,8 — 3 dm longis, 8 — 10 cm latis, oblongis vel elliptico- 

 oblongis, cuspidato- acuminatis, basi secus costas decurrentibus, nervo collectivo a 

 margine remoto. Spathae 1,5 — 1,8 dm longae, obhque campanulatae, basi convolutae 

 tubus intus atro-purpureus emergentiis filiformibus dense instructus, lamina margine 

 undulata, apice obtuso rotundata, atropurpurea. Spadicis quam spatha circ. duplo 

 longioris inflorescentia feminea 2,6 cm longa cjlindrica, mascula aequilonga paullum 

 crassior, appendix ad 3 dm (vel ultra) longa, elongato-conoidea, apicem versus atte- 

 nuata, basi paullum incrassata. Antherae sessiles apice quadratae, thecis poris 2 api- 

 calibus dehiscentibus. Pistillorum ovarium globosum, 2-loculare, stigma sessile globoso- 

 discoideum. 



