122 ex. PODOSTEMACE^ (baker AND WRIGHT). [7'risticha. 



broadly ovate to elliptic, usually trifarious, about J lin. long, the upper 

 sometimes longer and narrower. Flowers solitary, terminal on short 

 branches near the apex of the stem ; peduncle up to 9 lin. long in fruit, 

 terete, rigid, erect. Perianth-segments 3, equal, oblong-elliptic, cymbi- 

 form, pellucid. Filament compressed; anthers ovoid, obtuse. Ovary 

 shortly stalked, ellipsoid, trigonous. Capsule ellipsoid, 1 lin. long; 

 valves 3-nerved. — Weddell in DC. Prodr. xvii. 44 ; Tulasne in Ann. 

 Sci. Nat. 3™« ser. xi. 112, in Arch. Mus. Hist. Nat. Par. vi. (1852), 18G, 

 and in Mart. Fl. Bras. iv. i. 272 ; Engl. Hochgebirgsfl. Trop. Afr. 228 ; 

 Warming in Kgl. Danske Selsk. Skrifter, ser. 6, ix. ii. 107, figs. 1-G, 

 and xi. i. 28, 61, figs. 20-23, excl. syn. T.trifaria. T. hryoides, Gardn. 

 in Calc. Journ. Nat. Hist. vii. (1847), 178, and Wight, Ic. t. 1920. 

 2\ Philocrena, Steud. Nomencl. Bot. ed. 2, ii. 715. T. alierni folia, v&r, 

 pnlchella, Warm. I.e. xi. i. 36. Dufourea hypnoides, A. St. Hil. in Mem. 

 Mus. Paris, x. (1823), 472. Philoci'ena pusilla, Bong, in Mem. Acad. 

 Petersb. 6"^« ser. i. (1832), 80, t. 6. 



Upper Guinea. Xortlieru Nigeria : Xupc ; on rocks near Ketsa, Barter, 1093 ! 

 rocks of tlie Kiver Awou, an affluent from the Yornba country about 5 miles from 

 the River Kworra (Niger), Barter, 1530 ! Chutes de Billy, Chevalier, Go ! Fernando 

 Po : in a rivulet near Clarence, Barter, 2073 ! Mann ! 



xrile Ziand. Sudan : creeping on stones in tlie River Biri at Meshra Yoro 

 Shamo, J?roj<», 1632 ! Abyssinia: liegemeder; Silen Uha, AScAimjser, 1381 ! Mittu: 

 Woko River near Koro, Schweinfurth, 2859 ! 



Ziower Guinea. Angola: between Huilla and Humpata, Jo/inston ! 

 Mozamb. Sist. Portuguese East Africa : Lower Zambesi ; near " Mungozi," 

 Shupunga, Kirk ! 



3. T. altemifolia, Thouars ex Spreng. Syst. i. 22. Plant much 

 branched from the base, fixed to rocks by a dull rosy or purple thallus. 

 Stems terete or only slightly compressed, at first erect, afterwards 

 floating with the current, up to 10 in. long, reddish-purple, semipellucid ; 

 branches filiform. Leaves trifarious, at first densely packed, at length 

 distant, oblong-linear, 1 lin. long, \ lin. wide, the lower slightly 

 spreading, the upper erect and imbricate. Flowers solitary in the 

 axils of branches near the top of the plant or terminating short 

 branches. Perianth-segments green, ovate-oblong, concave. Anther 

 red, ovate-oblong, emarginate at the base. Capsule reddish-brown, 

 oblong-ovoid, 1 lin. long; valves 3, 3-ribbed ; peduncle G lin. long, 

 slender. — Tulasne in Ann. Sc. Nat. 3"^^ ser. xi. Ill, and in Arch. 

 Mus. Hist. Nat. Par. vi. (1852), 182 ; Wedd. in DC. Prodr. xvii. 45; 

 Warming in Kgl. Danske Vidensk. Selsk. Skrifter, ser. 6, xi. i. 31, 61, 

 62, figs. 25-30. 2\ hypnoides, vslv. fontinaloides, Wedd. in DC. Prodr. 

 xvii. 45 ; Hiern in Cat. Afr. PI. Welw. i. 907. T.fontinaloides, Welw. 

 ex Wedd. I.e. Dufourea altenii folia, Willd. in Ges. Naturf. Fr. Berl. 

 Mag. vi. (1812), 64 ; Roem. & Sch. Syst. i. 50. 



Xiower Guinea. Congo, without precise locality, Detrent, 902, 997 (ex Warm- 

 ing). Angola : in the Praesidium, on submerged stones in the clear mountain 

 streams of Pedra de Caboudo, Welwitschy 527 I 



