64 COFFEE 



Coffea congensis Froehner var. Chalotii Pierre Mss. ex DeWild. 

 Les Cafeiers (1901) 17. 



A tree with elliptical leaves. Leaf-lamina opaque, 10 cm. to 19 

 cm. long by 4.5 cm. to 1 1 cm. wide, apex acuminate, base cuneiform, 

 paired lateral veins 8 to 9; petiole 12 mm. to 22 mm. long. Inflores- 

 cence axillary, very often solitary, comprising 3 to 4 flowers sur- 

 rounded by a calyculus; outer calyculus foliaceous, highly developed; 

 inner calyculus of shorter bracts. Flowers 5-merous, corolla 18 to 

 23 mm. long, tube as long as lobes; calyx of 5 distinct, triangular 

 lobes; disk longer than calyx. 



Diagnostic Characters of the Variety : — It is larger than the species 

 proper, C. congensis Froehner; height often 7 to 8 M. Flowers 

 whiter, more fragrant. Fruit long, elliptical ; seeds grayish ; pedicel 

 always exceeds calyculus in length. 



Geographical Distribution : — Gabon ; Congo. 



History: — This variety was first collected by A. Dewevre in 1896 

 in the Congo; also by Chalot (no. 20 & 47) and by R. P. Klaine 

 (no. 1 691) in 1899; and was described in manuscript by M. Pierre. 

 Marc Laurent collected it at Wangata in August, 1903. It was 

 also found by Em. Laurent and L. Pj^naert (no. 250). The first 

 published description, however, was by DeWildermann in 1901. 

 This variety resembles C arabica L. ; but curiously it has not been 

 largely cultivated by the natives. 



Use : — Largely as a substitute for the seeds of C. arabica L. 



Bibliography: — DeWild. Les Cafeiers (1901) 17; and Miss. Laurent 

 3 (1906) 335 t. 71, 72, f. 54; PL Trop. Grand. Cult, i (1908) 90. — 

 T. Dur. and H. Dur. Syll. Fl. Congol. (1909) 276. 



Coffea mauritiana Lam. Encycl. i (1783) 550. 



A greatly branched, glabrous shrub with slender branches; at- 

 tains a height of 25 M. Bark whitish in the young plant; gray and 

 rugose in the mature plant. Leaves glossy ; upper side dark green, 

 lower side sometimes lighter, dull or brownish green; oblong, sub- 

 coriaceous, subobtuse, 5 to 7.5 cm. wide by 9 to 14 cm. long; apex 

 short, obtuse; base cuneiform; petiole short, flattened; venation of 

 lamina very slender and graceful on both sides; stipules minute, 0.3 

 cm. to 0.4 cm. long, lanceolate, deltoid. Flowers i to 4 together, 

 sessile, in the axils of the leaves, 5-merous; corolla white, 0.62 cm. 

 long, tube short; calyx short, 0.2 cm. long, subtended by a pair of 



