12G ex. PODOSTEMACE^ (BAKER AND WRIGHT). [DicTf^a, 



about J of the way up; anthers 2-celled. Stigmas linear, deflexed. 

 Capsule equally 2-valved, 1 lin. long, J lin. in diam. ; valves 5 -nerved, 

 not toothed at the apex. 



Mozamb. Blst. Rhodesia : Livingstone Island , Victoria Falls, growing in the 

 very swirl of the rapids, Kolhe, 3149 I 



Tills much resembles the Brazilian Podostemon Chamissonis, Tul., in habit. 



2. D. Garrettii, C. H. Wright. Stems seen 4 in. long, branched, 

 compressed, horny. Leaves distant, about 1 lin. long, irregularly lobed. 

 Flowers in terminal fascicles, each one infiexed within its spathella in 

 bud ; bracts 3 lin. long, sheathing at the base, lacerate above ; pedicel 

 in fruit G lin. long ; spathellse tubular, split down one side, 2 lin. long. 

 Perianth-segments small, linear. Filaments 2 lin. long, overtopping 

 the ovary, united rather more than half-way. Ovary ellipsoid, ribbed ; 

 stigmas subulate ; gynophore J lin. long. Capsule fby J lin. ; valves 

 equal, 3-ribbed. 



Upper Guinea. Sierra Leone : Sherboro, Garrett ! 



Imperfectly known species. 



3. Podostemon ThoUoni, Baill. in Bull. Soc. Linn. Paris, ii. 877. 

 Spathella pyriform, unequally toothed. Perianth-segments linear. 

 Stamens 2 ; filaments united below ; anthers oblong, 2-celled. Style- 

 branches 2, linear, recurved. 



ILower Oulnea. French Congo: rapids in the Lope River, Thollon, 825. 



In the absence of a description of the capsule it is impossible to refer this with 

 certainty to any genus, but all the above-mentioned characters agree with those of 

 Dicrcea. 



6. DICB-ffiJANTHUS, Engl. Jahrb. xxxviii. 94. 



Flowers zygomorphic. Perianth-segments 2, minute. Stamens 2 ; 

 filaments free or united only at the base ; anthers shortly lobed at both 

 ends, longer than the filaments; pollen-grains 2-celled. Gynophore 

 J- J the length of the elongate-clavate 2-celled ovary ; placenta central, 

 cylindrical, many-ovuled ; stigmas small, subulate. Capsule pale 

 brown ; valves linear, 5-nerved, remaining after the fall of the placenta. 

 Stems arising from a horizontal thallus attached to rocks, floating, 

 long and much-branched ; branches angular. Leaves deeply 2-3-fid ; 

 segments narrowly linear, but not capillary. Cymes unilateral, the 

 lower 6-20-, the upper 1-5-flowered ; peduncles clustered ; pedicels 

 many times longer than the spathellae. 



Species 2, endemic. 



Pedicel 2-3 in, long; spathella split down one side . . 1. JD. africanus. 



Pedicel ^ in. long ; spathella splitting irregularly . . 2. D. pusillus. 



