1960] 



SPATH IPHYLLTJ M 



25 



5. schomburgkii seems to be closely related to 8. sipctpoanum from which it 

 differs by its narrowly elliptic leaf-blade, its perianth of five or six segments, 11 

 and the greater number of ovules per ovary. It is separated by its narrower 

 leaves and the shorter stipe of the spadix from 8. neblinae. Inflorescence charac- 

 teristics serve to set apart 8. schomburgkii from the Andean species. 



13. S. neblinae Bunting, sp. now Figure 5. 



Foliornm lamina elliptica vel rare lanceolato-elliptica, (10.5— ) 15-19 em longa 

 et (2.3-) 2.9-3.9 cm lata, ad apicem acuminata, ad basim acuta, venis primariis 

 4-5-jugatis angulo 20-30° divergentibus ; petiolus (4—) 7.5-12 cm longus, ad 

 dimidium vel plus vaginatus; geniculum 0.5-1.3 cm longum et supra sulcatum. 

 Pedunculus (6-) 18-25 cm longus ; spatha recta, e oblonga ad lanceolatam. 

 I 4.4-) 5.7-6.8 cm longa et (0.9- ) 1.3-2.4 cm lata, apice attenuato-acuminato. 

 basi attenuato et aliquando breviter ansato, albo florescenti. in aetate virideseenti 

 et ut videtur deciduo; spadix viridis, (1-) 1.8-3.8 cm longus, stipite ( 1. 2-) 1.7-2.4 

 cm longo; perianthii segmenta separata; pistillum obpyramidale. apice truncato. 

 leviter constrictum inter ovarium annulare et stylum. solum stigmate elato 

 perianthium superanti ; ovarium ut videtur 2-loculare, loculis 5-2-ovulatis. ovulis 

 ad pulvinum subbasilarem in loculo quoqne affixis. 9-5 in toto ovario : spadix 

 fructiferus levis; fructus cylindrico-obpyramidalis ; semina ovulos numero 

 aequantia. valde angularia et irregulariter reniformia vel obli(iuo-ovoidea, super- 

 fieie conspieue foveolato. 



Type collection: B. Maguire, J. J. Wurdach <£ G. 8. Bunting 36797, "spathe 

 white in nr.. green in frt.. spadix green; ireniculum grooved above; rainforest; 

 streamside at Camp 2; locally frequent; elev. 180 m; lowland & slope forests. 

 Cerro de la Neblina, Rio Yatua": Ten-. Amazonas, Venezuela; 14 Dee 1953 

 (holotype XY. isotype US). 



VEXEZEELA : Mopuire et al. 36799, same data as the type collection (NY). 



8. nebUnae is allied to the other species of Guayana (discussed under £. 

 schomburgkii). Its closest relative is 8. maguirei. Both share the peculiarity of 

 a deciduous spathe. but from all other species of the sandstone area neblinae 

 differs by its proportionately wider leaf-blade and the longer stipe of its spadix. 

 Tt resembles 8. minor of Amazonian Peru, but the latter differs in the shorter 

 stipe of its spadix and the uniovulate condition of the locules of its ovary. 



14. S. floribundum (Lind. et Andre) X. E. Br. Gard. Chron. IT. 10: 783. 1878. 

 Figure 7. 



Antlturium floribundum Lind. et Andre. 111. Hortic. 21: 24. pi. 159. 1874. 

 AmomophyUum floribundum (Lind. et Andre") Engler. Gard. Chron. TI. 7: 140. 1877. 

 S path iphyll urn floribundum var. cuncatum Engl. Bot. Jahrb. 6: 281. 1885. 



Leaf-blade conspicuously oblique, elliptic to oblong or oblanceolate. widest at 

 or just above the middle. 13-20(-26) cm long and 5.5-9 (-10.5) cm wide, the 

 apex cuspidate, the base obtuse or acute, marginally undulate, dark green above 

 with a velvety lustre, the primary lateral veins ca. 9 pairs arising at an angle 

 of ca. 65-75°; petiole (6.5-) 10-22 (-28) cm long, often alate nearly to the geni- 

 culum. vaginate below or the wings expanded and free; geniculum 0.5-1.3 cm 

 long. Peduncle (16-) 20-37 cm long; spathe white, reflexed, lanceolate to oblong- 

 elliptic. 4— 8 (-9.8) cm long and 1.2-3 cm wide, the apex attenuate to cuspidate, 

 the base acute to subtruncate and clasping the peduncle ; spadix 2.5-5.5 cm long, 

 on a stipe' 0.3-0.8 cm long; perianth green, the segments separate or sometimes 



n Xot considered a good diagnostic feature. 



