124 CX. PODOSTEMACE® (BAKER AND WRIGHT).  [Winklerella. 
Spathelle about 3 lin. long; pedicels very slender, about 14 lin. long. 
Filaments 2 lin. long, united about half-way up; anthers rather longer 
than the filaments. Ovary compressed, ovate. Capsule about 1 lin. 
long; valves boat-shaped, very minutely verrucose. Seeds black, 
minute, ovoid. 
Upper Guinea. Cameroons: on submerged rocks at the North Falls, near 
Edea, Winkler, 900. 
4, LEIOTHYLAX, Warming in Danske Vidensk. Selsk. 
Skrifter, ser. 6, ix. ii. 145. 
Flowers hermaphrodite. Perianth of 2 small scales. Stamens 2; 
filaments united in the lower part; anthers oblong. Ovary globose, 
2-celled ; styles 2. Capsule globose ; valves 2, subequal, not ribbed.— 
Herbs with much-branched stems. Leaves divided in very narrow 
segments. Flowers lateral or terminal, enclosed when young in 
membranous spathelle. 
Species 3, endemic. 
This genus differs from Dicrea, Thouars, in the capsule being without ribs and 
the pollen-grains 1-celled. 
Ovary globose. 
Ovary sessile . : : - c : . 1. DL. Warmingii. 
Ovary distinctly stalked . : : ‘ . 2. L. quangensis, 
Ovary oblong : : = : : C . 8. LZ. violascens. 
1. L. Warmingii, Warming in Danske Vidensk. Selsk. Skrifter, 
ser. 6, ix. ii. 150, jig. 41. Stem divaricately branched. Leaf-segments 
very narrowly subulate. Spathelle 2-3 approximate near the apex of 
the branchlets, sessile, obovoid, acute, bursting irregularly ; pedicel 3-1 
lin. long. Perianth-segments linear-subulate. Filaments united in 
the lower half; anther-cells oblong, unequal. Ovary sessile, globose ; 
stigmas linear-spathulate. Capsule globose, quite smooth.—/Dvcrea 
Warmingii, Engl. Jahrb. xx. 135, t. 4, figs. L-P. Leiocarpodicrea 
Warmingii, Engl. Jahrb. xxxviii. 98. 
aaa: Central. Congo Free State: on stones in the Lulua River, Poggé 
1379. 
2. L. quangensis, Warming in Danske Vidensk. Selsk. Skrifter, 8e"- 
6, ix. ii. 147, fig. 40. Stems numerous, arising from a thallus horizon- 
tally fixed to rocks, much-branched, slightly compressed, 8-12 in. long; 
branches 2-6 in. long; internodes long. Leaves many times dicho- 
tomous ; segments very narrowly linear. Flowering branches much 
divided above and 1—3-flowered near the apex ; bracts 1-3, subtending 
the spathella, up to 9 lin. long, sheathing and shortly 2-auricled at the 
base, once or twice dichotomous, with very narrow acute segments; 
pedicel 4 lin. long; spathella ovoid, acute, about 1 lin. long, bursting 
