Stenospermatium. gl 



\b. Stenospermatium Schott. 



Stenospermatium*) {Stenospermation) Schott, Gen. Ar. (1858) 70, Prodr. (1860) 

 346; Engl, in Martius, Fl. brasil. III. 2. (1878) 108, in DG. Monogr. Phan. II. (1879) 

 256 et in Engler's Bot. Jahrb. XXXVII. (1905) 110—114. 



Flores omnes hermaphroditi, fertiles, infimi tantum breviores, nudi. Staminum 4 

 filamenta complanata, apice repentino in connectivum tenue angustata, ovarium aequan- 

 tia; antherae dithecae, thecis oblongo-ovoideis acutis, loculis suboppositis, extrorsum ver- 

 sis, rima longitudinali basin non attingente lateraliter dehiscentibus. Ovarium obpyra- 

 nnidatum vel prismaticum, vertice truncatum, biloculare; ovula in loculis 4 usque multa 

 collateralia anatropa, funiculis longioribus placentae basilari lateraliter affixa, micropjle 

 fundum spectantia. Stilus brevis, ovario crassior; stigma lineari-oblongum, spadicis 

 directionem sequens. Fructus baccatus, parvulus, obovoideus, vertice subtruncatus, 

 2-locularis, loculis 3-plurispermis. Semen clavato-cylindroideum, tenue, funiculo lon- 

 gulo affixum, raphe longa totum latus internum fere percurrente, chalaza tuberculose 

 prominula, testa crassula, tegmine tenuissimo. Embryo axilis in albumine copioso. 

 — Suffrutices Americae tropicae subcentralis , aequatorialis et Hylaeae incolae. Rami 

 densiuscule distiche foliosi, erecti, ad nodos adradicantes, post primam inflorescentiam 

 sympodium efformantes. Foliorum petioli longe vaginati, geniculo brevi instructi; lamina 

 oblongo-elliptica vel lanceolata, inaequilatera, nervis lateralibus I. pluribus adscendentibus. 

 Pedunculus longiusculus, initio apice nutans, demum erectus. Spatha convoluta, demum 

 expansa, naviculiformis, albida, mox decidua. Spadix stipitatus, cylindroideus albidus. 



Clavis specierum. 



A. Lamina longitudine 1,5 dm haud superans. 



a. Fohorum petiolus laminae aequilongus vel longior, rarius 

 paullum brevior. 



a. Spadix sessilis \. St. angustifolium, 



ß. Spadix stipitatus. 



I. Lamina oblonge vel oblongo-elliptica. 



1 . Foliorum petiolus ad geniculum usque vaginatus, 

 lamina rigidior. 



* Spadix circ. 3 cm longus ^. St. flave^cens. 



** Spadix circ. 6 cm longus 3. St. Mathewm. 



2. Foliorum petiolus ad medium usque vaginatus, 



lamina tenuior i. St. longipetiolatum. 



II. Lamina ovata, tenuior 6. St. latifolium, 



b. Foliorum petiolus circ. dimidio laminae aequilongus. 

 a. Spadix sessihs. 



I. Lamina elliptica, basi obtusa; spadix cylindricus . %. St. Sodiroanum. 



II. Lamina oblonga, basi acuta; spadix oblongus . . 7. St. Andreanum. 

 ß. Spadix stipitatus, cylindricus 9, St. angosturense. 



B. Lamina longitudine 1,5 dm superans. 



a. Foliorum petiolus laminae aequilongus vel longior, reirius 

 paullum brevior. 

 a. Spadix sessilis. 



I. Lamina oblonga pedunculo fere duplo brevior . . 9. St. sessile. 



II. Lamina lanceolata pedunculo subaequilonga . . . \0. St. densiovulatum, 

 ß. Spadix stipitatus. 



I. Lamina basi zb acuta. 



1 . Lamina oblongo-elliptica haud ultra 2 dm longa . W. St. robustum. 



2. Lamina lanceolata vel oblongo- lanceolata haud 

 ultra 3 dm longa. 



*) aiEvos (angustus); ob semina angusta. 



A. Engler, Das Pflanzenreich. IV. (Embryophyta siphonogama) 23 B. 6 



