Leiothi/lax.] ex. podostemace.e (baker and wright). 125 



irregularly, about J the length of the pedicel. Perianth-segments 2, 

 small, linear, acute. Filaments 3 lin. long, united in the lower two- 

 thirds ; anthers oblong, cells slightly divergent above. Gynophore up 

 to twice as long as the ovary. Ovary globose, smooth, miany-ovuled ; 

 stigmas linear-spathulate, ^ the length of the ovary. Capsule globose, 

 brown, quite smooth, | lin. in diam. — Dicrcea quangensis, Engl. Jahrb. 

 XX. 134, t. 4, figs. A-K. LeiocarpodicrcBCi qitangensis, Engl. Jahrb. 

 xxxviii. 98. 



Ziower Guinea. Angola : Bismarck Falls on the Quango River, on stones in 

 quickly running water, Teuscz, 506. 



3. Ij. violascens, C. H. Wright. Whole plant violet. Stem 

 short. Leaves about 1 in. long, dichotomously divided ; segments very 

 narrow. Bracts approximate near the apex of the stem, similar to the 

 leaves, sheathing or shortly biauriculate at the base ; spathella? sessile, 

 oblong when closed, cup-shaped and toothed when ruptured, about 1 lin. 

 long ; pedicel about 1 lin, long. Perianth-segments J lin. long, linear- 

 subulate, acute. Androphore variable in length, sometimes as long as 

 the gynophore and ovary. Filaments as long as the oblong anthers. 

 Ovary oblong, shortly stalked. Capsule oblong, brown, | lin. long, J lin. 

 in diam. — Dicrcea violasceiis, Engl. Jahrb. xxx. 312. Leiocarjiodicrcea 

 violascens, Engl. Jahrb. xxxviii. 98. 



nxozamb. I>lst. German East Africa: Kinga (Livingstone) Mountains, on 

 boulders in the bed of the River Diroro, 7000 ft., Goetze, 943. 



5. DICR-SIA, Thouars, Gen. Nov. Madag. 2 (Dicr.cia, by error) 



Flowers hermaphrodite, at first enclosed in a spathella. Perianth- 

 segments 2, minute, linear. Stamens 2 ; filaments united below ; 

 anthers ovate, 2-celled, dehiscing longitudinally; pollen-grain with 

 two globose cells. Ovary ellipsoid, sessile or nearly so, ribbed, 2-celled, 

 many-ovuled ; stigmas 2, free, short, terete or compressed. Capsule 

 ellipsoid, 8-12-ribbed, 2-celIed ; valves 2, equal. — Submerged herbs. 

 Stems elongated, rarely frond-like, branched or subsimple. Radical 

 leaves variable, cauline scale-like. Flowers terminal on short branchlets. 

 — Podostemoiif Benth. et Hook. f. Gen. PI. iii. 112, partly. 



Species about 10, the others in the Mascarene Islands and India. 

 Flowering branches with numerous short imbricate 3- 



lobed leaves . . . . . . . . 1. D. tenax. 



Flowering branches with few long lacerate leaves . . 2. D. Oarrettii. 



1. D. tenax, C. H. Wright. Plant of a bronze colour and horny 

 consistency (Kolbe). Stem much-branched, portion seen 2 in. long, 

 J lin. in diam., slightly compressed. Leaves numerous, scattered 

 below, imbricate on the flowering branches, quadrate, deeply 3-lobed, 

 J lin. long and wide. Spathella tubular, irregularly toothed, green, 

 1 lin. long ; pedicel inflexed in bud. Stamens 2 ; filaments united 



