1960] 



SPATHIPHYLLUM 



31 



longum. Pedunculus quam petiolus ca. 2-plo longior, 21 cm longus; spatha 

 lanceolata, 6.8-7.2 cm longa et ca. 1.8 cm lata, apice attenuate-, basi acuto; spadix 

 ca. 2 cm longus, stipite ca. 1.2 cm longo; flores 2-meri; perianthii segmenta separ- 

 ata; pistillum cylindrico-obpyramidale, quadrangulare, apice subtruncato, stig- 

 mate elato perianthium superanti, poro stigmatico oblongo ; ovarium 2-loculare, 

 loculis 2-ovulatis, 4 in toto ovario; spadix fructiferus levis; fructus cuboideus, 

 breviter rostellatus; semina 4, ovoidea ad commaticiformia in faciei obliqua, 

 superficie foveolato. 



Type collection: B. Mac/wire cC L. Politi 28751b, "streamside, mixed montane 

 forest at 600 m alt., Intermediate Camp, Cerro Sipapo (Paraque)"; Terr. 

 Amazonas, Venezuela. 2 Feb 1949 (holotype NY). Unicate. Known only from the 

 type collection. 



The original collection consists of two plants found mixed among specimens of 

 8. cannaefalium (Maguire 28751) collected on the slopes of Cerro Sipapo, 

 Venezuela. 8. sipapoanum shows a close relationship to 8. schambrurgkii, but 

 differs in its proportionally narrower, oblong leaf-blade, long-attenuate spathe, 

 longer stipe, and bilocular ovary with two ovules per locule. The greater number 

 of ovules per locule in S. neblinae separates it from 8. sipapoanum. 



19. S. tenerum Engl. Bot. Jahrb. 37: 120. 1905. Figure 6. 



Leaf-blade somewhat oblique, oblong-lanceolate, 16-18 cm long and 4-5 cm 

 wide, the apex acuminate-cuspidate, the base commonly obtuse, with ca. 7 or 8 

 pairs of primary lateral veins arising at an angle of 60-65° ; petiole slender. 

 20-"26 cm long, prominently alate in the lower three-fourths; geniculum 0.4-0.6 

 cm long. Peduncle slender, 31-39 cm long; spathe oblong to oblong-lanceolate. 

 5.3-8.3 cm long and 1.5-2 cm wide, the apex attenuate to subcaudate, the base 

 obtuse, greenish-white (fide T T le) ; spadix 2.6-5 cm long, on a stipe 0.3-0.8 cm 

 long; perianth of separate segments; pistil obpyramidal, very angular, apically 

 truncate, the nipple-like stigma shortly exceeding the perianth; ovary 3-locular. 

 the ovules affixed near the base of each locule, 2(-l) in each of the 3 locules. 

 totaling 6-4 ovules per ovary; fruiting spadix smooth; fruit broadly obovoid, 

 apically truncate; seeds 5-3, broadly comma-shaped in profile, the surface 

 vertically furrowed and foveolate between the verruculose ridges. 



Type collection: E. Vie 6851, "Bodenpfl., Bl. griinlich weiss, Cerro de 

 Ponasa, 1200 m," Loreto, Peru, Feb 1903 (holotype B, isotypes G-DEL, MG). 



Distribution : Along streams in Loreto, Peru. 



PERU: Loreto: Pongo de Cainarachi, Sep 1902, Vic 6851b (L). 



The leaf -blade of S. tenerum is proportionally rather wide as compared to 

 that of closely related species, and the primary lateral veins are quite wide- 

 spreading, surpassed only by those of 8. patulinervum. The exceptionally long 

 and slender peduncles of S. tenerum are very characteristic. Close relationship 

 exists between 8. tenerum and 8. patinii, but the base of the leaf-blade is 

 broader in this species than in 8. patinii. 



20. S. minor Bunting, sp. nov. Figure 6. 



Foliorum lamina obliqua, elliptico-lanceolata, 11-13.5 cm longa et 3 cm 

 lata, ad apicem acuminata, ad basim cuneata vel acuta, veins primariis ca. 

 6-jugatis angulo ca. 45° divergentibus ; petiolus ad 9.5 cm longus, alatus prope ad 

 geniculum; geniculum 0.3-0.5 cm Ion gum. Pedunculus quam petiolus 2-plo 

 longior, ad 18 cm longus; spatha oblonga, 4-4.7 cm longa et 0.9-1 cm lata, apice 

 acuminato, basi acuto et plus minusve complexa ; spadix 1.7-2.5 cm longus, stipite 



