64 CXLIII, COMMELINACEE (CLARKE). [ Aneilem 
Soe. xxx. 430, in Trans. Linn. Soc. ser. 2, Bot. iv. 52, and in Cat. Afr. 
Pl. Welw. ii. 79; Hua in Bull. Mus. Hist. Nat. Par. i. 120. Commelina 
sinica, Roem. et Schultes, Mant. i. Addend. i. 376. 
Upper Guinea. Sierra Leone; Bumban to Port Lokko, Scott-Elliot, 5742 ! 
Worth Central. French Congo: Uaddas, on the Ubangi River, Dybowski, 
26. 
Nile Land. British East Africa: Jur; Agad Seriba (Wan), Schweinfurth, 
1684! Ruwenzori, below 6000 ft., Scott-Hiliot, 6673! Leikipia district, at Gnaso 
Thegu and Kithungulu, Gregory! Ukamba, above 4000 ft., Scott-Elliott, 2340! 
Ribe to Galla Country, Wakefield! Nyika Country at Duruma, Wakefield, 26! 
Rabai Hills, near Mombasa, Taylor ! 
Lower Guinea. (Gaboon: Munda; Sibange Farm, Soyauxr, 341! French 
Congo; Franceville, Thollon, 314; Brazzaville, Dybowski ; Bangui, Dybowski, 525- 
529; Lower Congo: Lukungu, Hens, 228A! Bingila, Dupuis! Stanley Pool, 
Biittner, 305! Quiballa, Monteiro! Angola; Pungo Andongo, in marshes to the 
west of the Presidium, and by streams in the Presidium itself, 2400-3800 ft., Wel- 
witsch, 6627! 6628! Huilla; marshy places round the base of Morro de Lopollo, 
3800-5500 ft., Welwitsch, 6591! Dammara-land, Hen ! 
South Central. Congo Free State : Bolobo, on the River Congo, Johnston ! 
Upper Marungu, De Beerst! Lualaba River, Briart ! Katanga, Briart ! Mussima, 
Briart ! 
Mozamb. Dist. Zanzibar, Hildebrandt, 1055! Sacleux, 406! German East 
Africa: Kilimanjaro, 5000 ft., Zohnston! Rovuma Bay, Kirk! ‘Portuguese East 
Africa: Zambesi Delta; mouth of the West Luabo River, Kirk, 2! British Central 
Africa: Urungu; Fwambo, Carson, 43! 76! 77! Kambole, south-west of Lake 
Tanganyika, 5000 ft., Nutt! Nyasaland; Kondowe to Karonga, 2000-6000 ft., 
Whyte! Mount Malosa, 4000-6000 ft., Whyte! Mount Zomba, 4000-6000 ft., 
Whyte! Zomba and vicinity, 2500-3500 ft., Whyte! Mount Mlanji, Whyte, 39! 
and without precise locality, Buchanan, 368! 
Also in South China, Malaya, South India, Mascarene Islands, and South Africa. 
Var. 8 longifolia, C. B. Clarke, Rather larger in all parts ; leaves often 3-5 in. 
broad ; fertile stamens commonly 2, but sometimes 3.—<A. longifolium, Hook. Exot. 
Fl. iii, t. 204; Baker in Trans. Linn. Soc. xxix, 163. 4. giganteum, as to the 
African plants, C. B, Clarke in DC. Monogr, Phan. iii, 212 ; Durand & Schinz, Consp. 
Fl. Afr. v. 480; K. Schum. in Engl. Pfl. Ost-Afr. C. 136. 
Nile Land. British East Africa: Jur; Jur Ghattas, Schweinfurth, 1840! 
Niamniam ; by the River Sway, Schweinfurth, 3904! 
Lower Guinea. Cameroons: Batanga, Bates, 120! 
Mozamb. Dist. Zanzibar, Bojer! Lake Tanganyika, Carson! German East 
Africa: Unyamwezi ; near Tabora, in swamps, 3000 ft., Speke & Grant ! Usambara, 
Hoist, 2962! Portuguese East Africa: Zambesi Delta; Luabo River, Kirk, 50! 
River Shire, near Morambala Mountain, Kirk ! British Central Africa : Nyasaland; 
without precise locality, Buchanan, 1835! 1863! Rhodesia: Six-mile Spruit, near 
Salisbury, Hon. Mrs, Evelyn Cecil, 148! 
This series of plants runs without a break into the typical form. It was 
attempted, in DC. Monogr. Phan, iii. 212, to separate 4. giganteum with 8 fertile 
stamens specifically from 4. sinicum with 2 fertile stamens. Hooker says that his 
A. longifolium had 2 or 3 fertile stamens ; and I do not find that the Indian A. gigan- 
teum has always 3. 1 think the number of fertile stamens is not absolute, and that 
all the African plants cited under A. sinicwm, var. longifolia, are one species. The 
Indian A. giganteum differs very little ; it is rather more robust, with thicker branches 
to the panicle. 
Var. simplex, C. B. Clarke in DC. Monogr. Phan. iii. 212. Leaf-sheaths shaggy- 
