EUCOFFEA HOOK. F. 93 



Laurent 3 (1906) 328; Compagnie Kasai (1910) i. — Editor "Robusta 

 Coffee" in Bull. Imp. Inst. 10 (1912) 454-465. — Kew Bull. (1919) 57. 

 Economic and Cultural References: — Editor in Gard. Chron. (May 

 16, 1903) 306 (C. Laurentii). — Watt Comm. Prod. Ind. (1908) 370. — 

 Abstract in Ind. Rubber Journ. (June 13, 1910) 791 "Coffea Robusta 

 as a Catch Crop for Para Rubber." — Gallagher in Bull. Dept. Agric. 

 Fed. Malay States No. 7 (1910) 1-7. — Cramer "Une Nouv. Cult. 

 Intercalaire pour les Arbres a Caoutchouc de Para. — Le Cafe Robusta" 

 in Bull. Soc. Beige Etud. Col. 18 (Feb., 191 1) 101-117, 109 (habit). — 

 Editor in Agric. News, Barbados 9 (1910) 133; 10 (1911) 132, reprinted 

 as Cope's Planting Leaflet No. i (1912) 1-7. — Hartwich Die Men- 

 schlich. Genuszm. (1911) 825. — DeWild. "Etud. sur le Coffea robusta" 

 in Bull. Assoc. Plant. Caoutchouc No. 12, 4 (Dec, 1912) 274-276; 

 No. 2, 5 (Feb., 1913) 28-31. — Nigeria 3 (1915) 366. — Perrot Travaux 

 Lab. Mat. Med. Ecole Super, de Pharm. de Paris pt. 5, 10 (1913-1916) 

 no. 3, pg. 9; Les Grand. Prod. Veget. Col. Franc. (1915) 424, 429, 430 

 t. 34, 436. — Editor in Bull. Imp. Inst. 20 (1922) no. 3, pg. 295, 296, 299. 



Coffea excelsa A. Chev. in Rev. Cult. Col. 12 (1903) 258. 



A tree, 6 M. to 15 M. high, bearing grayish and longitudinally 

 fissured bark. Leaves 18 cm. to 28 cm. long by 9 cm. to 12 cm. 

 wide; petiole short, i cm. long; lamina usually obovate-Ianceolate, 

 sometimes obovate-spathulate or slightly club-shaped, ending abruptly 

 in an obtuse apex; 6 to 9 paired lateral veins, raised on the lower 

 surface. Inflorescence in axillary cymes, i to 5 flowers in each 

 cyme. Flowers white, fragrant. Each cyme is surrounded by 2 

 to 3 calycules with resinous surfaces more or less fringed at the 

 margin. Corolla total length 20 mm.; tube 8 mm. to 10 mm. long; 

 lobes, always 5 in number, 10 mm. to 12 mm. long by 6 mm. wide; 

 stamens entirely green in color, 10 mm. long, anthers occupy about 

 6 mm. and the filaments 4 mm.; style slender, 15 mm. to 20 mm. 

 long, 2 filiform stigmatic processes ; calyx greatly reduced or absent, 

 shorter than the disk, calyx-lobe rather circular. Caffeine-content 

 of the seed is 1.89%. 



Diagnostic Characters of the Species: — Leaves very large. Sta- 

 mens wholly green in color. Flowers in February and March. 



Common Name : — Senoussi Coffee. 



Geographical Distribution: — Tropical Africa; Sudan; Central 

 Africa; Chari River Region; Bata ; Kotto. 



History: — This gigantic species, which occasionally reaches the 

 height of 20 M., was discovered in the region of Lake Tchad in 

 1904, and was described by A. Chevalier in 1905. It grows abun- 



