14 COFFEE 



acuminate, rounded at the base, up to 25 cm. long by 

 15 cm. wide, dull on both surfaces, glabrous, midrib flat 

 above, prominent below ; calyx minute, entire ; — see c. 

 X. Flowers 5-merous, corolla-tube less than 1.25 cm. long; 

 leaves with 9 to 12 lateral veins, looped and much 

 branched within the margin, slightly arcuate, diverging 

 by a 45-degree angle from the midrib, distinct above, 

 prominent below, veins lax, petiole 1.25 cm. long, glab- 

 rous; berries about 1.25 cm. in diameter 



C. robusta Linden 

 c. Flowers in axillary cymes, each of i to 5 fragrant, white 

 flowers; total corolla-length 20 mm.; leaves 18-30 cm. long 

 by 9-12 cm. wide, short petiole i cm. long, leaf-blade 

 obovate-lanceolate, obovate-spathulate, terminating abrupt- 

 ly in an obtuse apex, 6 to 9 paired prominent veins below ; 

 calyx greatly reduced or nearly absent, shorter than the 

 disk; calycules bear resinous surfaces, slightly fimbricated 

 at the margin C. excelsa A. Chev. 



Section II:— LACHNO STOMA Hook. f. 



Trees or shrubs. Flowers white, very small, in axillary cymes; 

 bracts and bracteoles small, ovate, subconnate; corolla-tube short, 

 throat dilated, bearded, lobes four, small, acute ; aestivation contorted ; 

 anthers oblong, acute, dorsally attached near the base; filaments, if 

 exserted, very shortly so. Calyx-limb quadridentate. Leaves petio- 

 late, membranaceous, younger parts pubescent; stipules connate at 

 the base, ovate, apex cuspidate, subpersistent. Fruit subglobose to 

 oblong-ellipsoid, not didymous when 2-seeded; calyx crowns the 

 fruit ; pericarp fleshy ; endocarp rather fibrous ; seeds dorsally convex, 

 ventrally plane or concave. Endosperm, in transverse section, de- 

 void of plications; knottiness of the cell-walls very indistinct or 

 lacking. 



L Leaves glabrous, oval or elliptical, acuminate; fruit long; seeds 



long, plano-convex; — see II C. Jenkinsii Hook. f. 



II. Leaves oblong-lanceolate, obtuse, frequently cuspidate; fruit 



oblong; seeds oblong; — see III C. ligustroides S. Moore 



III. Leaves at least somewhat hairy along the veins; fruit nearly 

 round ; seeds round, concavo-convex C. khasiana Hook, f . 



