190 CL. AROiDE^ (brown). [StylocMton, 



slightly obtuse at the base. Peduncle IJ-lJ in. long, slender. Spathe- 

 tube 1 in. long, \ in. diam., cylindric, yellowish-white ; limb about 

 2 in. long, J in. broad, lanceolate, dull violet. Spadix sessile. Female 

 flowers '2-?)^ in one cycle. Perianth shortly cup-shaped, 1 J lin. broad. 

 Ovary 1 lin. high, depressed globose ; stigma thick, discoid, 1 J lin. 

 broad. Male spike densely many-flowered, a short distance from the 

 female flowers. Perianth very short. Filaments of the stamens a little 

 shorter than the anthers. 



Upper Guinea. Gameroons : in wet sliady places on the banks of a brook 

 near Yaunde, Zenker ^ Standi, 33S. 



Allied to S. lancifolius , Kotschy, according to Engler, who does not state if the 

 leaves appear with or after the flowers : but as specimens of S. gahonicus, X. E. Br., 

 have been distributed from Berlin under the name of S. Zenkeri (with the descrip- 

 tion of which they do not agree), it is assumed in tlie key to the species that "S. Zenkeri 

 somewhat resembles S. gabonicus, and like that species has axillary peduncles. I 

 have not seen it, 



5. S. gabonicus, X. E. Br. Rhizome creeping, about \ in. 

 thick ; roots moderately stout, but scarcely fleshy, branching. Leaves 

 contemporary with the flowers, glabrous ; petiole 3J-9 J in. long, 

 sheathing for about \ of its length; blade 4J-7 in. long, 2J-4J in. 

 broad, oblong or elliptic-oblong, obtuse, narrowed below the middle to 

 a cordate base, with obtusely rounded lobes ^-1 in. long, under surface 

 minutely freckled with pale brown in the dried state. Peduncle 

 |-1 in. long, slender, axillary, solitary. Spathe not subterranean ; tube 

 very short, 3-4 lin. long, slightly inflated at the base; limb Ij-lf in. 

 long, 6-8 lin. broad, oblong-ovate, obtuse, mucronulate, concave. 

 Spadix 6-8 lin. long. Female flowers 4, horizontal, free. Perianth 

 cupular, truncate, with a thickened rim, laterally much compressed, its 

 longest diam. 1;^ lin., about J lin. deep. Ovary free, laterally com- 

 pressed, shorter than the perianth ; style about J lin. long, shortly 

 exserted, stout, horizontally spreading ; stigma capitate. Male spike 

 rather dense, about | lin. distant from the female flowers. Perianth 

 cupular, truncate, much compressed, and pointed at each end, about 

 \ lin. deep. Stamens 4 ; filaments moderately stout, shortly exserted 

 from the perianth ; anthers with 4, somewhat radiating lobes (cells). 



Upper Guinea. Fernando Po, Barter, 1470! Cameroons : Bipinde, in the 

 forest, Zenker, 1936 ! 2013 ! 



JtO'weT Guinea. Corisco Bay : Mount John, River Kongui, Mann, 1880 1 

 Gaboon : Gaboon Kiver, Mann, 1042 ! 



According to Barter, the Fernando Po plant has a light pink spathe, his specimen 

 is without flowers, but appears to be the same as the Gaboon plant. The specimens 

 collected by Zenker at Bipinde (1936, 2013) were received from Berlin under the 

 name of 8. Zenkeri • they are identical with those collected by Mann, and do not 

 agree with Engler's description of ^S*. Zenkeri, which is said to have the leaves 

 slightly obtuse (cbtusiuscula) at the base, and a spathe with a tube 1 in. long, and a 



6. S. lobatus, y. E. Br. Leaves contemporary Avith the flowers, 

 glabrous ; petiole 6-10 in. long, broadly sheathing for about half its 



