124 ex. PODOSTEMACE.E (BAKER AND WRIGHT). [Winklerella. 



Spathellse 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. G, 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 spathellse. 



Species 3, endemic. 



This genus differs from JDicrcBa, Tliouars, in the capsule being without ribs and 

 the pollen-grains 1-celled. 

 Ovary globose. 



Ovary sessile . . . . . . . 1. i. Warmingii. 



Ovary distinctly stalked . . . . . 2. L. quangensis. 



Ovary oblong . . . . . . . 3. i. violascens. 



1. L. Warmingii, Warming in Danske Vidensk. Selsk. Skrifter ^ 

 ser. G, ix. ii. 150, Jig. 41. Stem divaricately branched. Leaf-segments 

 very narrowly subulate. Spathellae 2-3 approximate near the apex of 

 the branchlets, sessile, obovoid, acute, bursting irregularly ; pedicel J-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. — Dicrcea 

 Warmingii, Engl. Jahrb. xx. 135, t. 4, figs. L-P. Leiocarpodicrcea 

 Warmingii^ Engl. Jahrb. xxxviii. 98. 



Soutli Central. Congo Free State : on stones in the Lulua River, Pogge, 

 1379. 



2. L. quangensis, Warming in Danske Vidensk. Selsk. Skrifter, ser. 

 6, ix. ii. 14:7, fg. 40. Stems numerous, arising from a thallus horizon- 

 tally fixed to recks, much-branched, slightly compressed, 8-12 in. long; 

 branches 2-Q 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 



