390 LXI. RUBIACE^E [Ixora 



29. L rugosula, Wall. (I. sessiliflora, Kurz). Martaban and Tenasserim, fl. white or pale 

 rose-coloured, corolla-tube J-| in. 30. I. opaoa, Br. Tenasserim, fl. pink, corolla-tube 

 1 in. long. 



23. COFFEA, Linn. ; Fl. Brit. Ind. iii. 153. 



Shrubs, stipules free. Fl. usually white, axillary, solitary, in pairs or in 

 dense axillary fascicles. Free portion of calyx short. Corolla-lobes 4-9, 

 twisted in bud. Anthers 4-7, linear, attached in the middle of the back to 

 the short filaments. Ovary surmounted by an annular more or less fleshy 

 disk. Drupe with two coriaceous or cartilaginous pyrenes. Seed plano-con- 

 vex, as a rule with a deep inwardly curved groove on the flat vertical face. 

 Embryo short, near the base of seed, radicle inferior, cotyledons thin, cordate, 

 albumen horny. Species 25, tropics of the Old World. 



A. Fl. in axillary many-fld. fascicles, corolla-tube less than h in. 



1. C. arabica, Linn. ; Wight Ic. t. 53; Bedd. Man. t. xvii. ; Brandis F. 

 Fl. 276. 'Coffee. 



A glabrous, evergreen shrub or small tree, 1. elliptic-oblong 5-7 in. long, 

 narrowed into short petiole. Calyx-limb truncate, corolla funnel- shaped, tube 

 \-\ in. long, lobes oblong, as long as tube, filaments shorter than anthers. 

 Berry fleshy, purple when ripe. 



Indigenous in Abyssinia and the Sudan. Cultivated in Arabia since the loth, on 

 the mountains of the Peninsula since the 17th century. Fl. March-June. 2. C. 

 liberica, Hiern. Liberian Coffee, indigenous in tropical Western Africa, thrives at lower 

 elevations within the tropics, and is less exposed to the ravages of the fungus Hemileia 

 vastatrix than 1, has larger 1., the corolla 6-9-lobed, fr. black 1 in. long. 3. C. Khasiana, 

 Hook, f . Khasi and Naga hills, Manipur. A large rambling almost climbing shrub, 

 branchlets pubescent with short hairs, 1. elliptic-lanceolate, caudate-acuminate, blade 

 5-8, pet. J-i in. long. Fl. yellowish-green on very short pedicels bracteate at the 

 base, which lengthen out as the fr. ripens. Calyx with 4 triangular acute teeth, 

 corolla-tube -fa-l in., lobes 4, short, hairs in throat white, anthers yellow. -Fr. J in. 

 diam., calyx-teeth persistent. 4. C. Jenlrinsii, Hook. f. Khasi hills. Similar, but 

 glabrous, I. narrower, corolla-tube J in., fr. J in. long, seeds plano-convex without a 

 central furrow. 



B. Fl. solitary or 3-4 together, corolla-tube \ in. or longer. 



5. C. bengalensis, Roxb. ; Kanjilal F. Fl. 207. Yern. Zalat-pyu, Burm. 



A deciduous shrub, youngest shoots slightly pubescent. L. membranous, 

 not shining, 2-5 in., suddenly contracted into the short petiole, stipules subu- 

 late from a broad basis. Fl. pure white, fragrant, solitary or in pairs, calyx 

 with 5 broad often indistinct teeth, divided into numerous linear segments, 

 corolla 1-1^ in. across, tube J-l in. Fr. i- in. long, black. 



Subhimalayan tract and outer hills from the Jumna eastwards. Sikkim Terai. 

 Assam, Silhet. Chittagong. Tenasserim. Upper Burma. Fl. Feb.-April. 6. C. 

 fragrans, Wall. Silhet, Tenasserim, 1. lanceolate, fl. usually solitary, calyx with 

 numerous teeth, corolla-tube slender, §—1 in. long. 



7. C. Wightiana, Wall. ; Wight Ic. t. 1598. Western Peninsula from Coorg to 

 Travancore. Ceylon, dry region. A small shrub, bark white, branches rigid almost 

 spinescent, divaricate, 1. i-li in., nearly sessile, stipules short rigid with a sharp point. 

 Fl. solitary, sessile, calyx with 5 broad deeply laciniate teeth, corolla-tube J in., lobes 

 shorter than tube, fr. didymous, much broader than long. 8. C. travancorensis, W. et A. ; 

 Trimen Handb. Ceylon t. 53. Western Peninsula from Coorg to Travancore. — Ceylon, 

 moist and intermediate region, ascending to 3,000 ft. A small shrub, branchlets slender, 

 1. lanceolate 2—4 in. long, petiole short, stipules caducous. Fl. solitary or in threes, 

 calyx pubescent, limb truncate, corolla-tube § in., glabrous within. Fr. broader than 

 long, | in. broad. 



Hamiltoniasuaveolens, Boxb. ; Bedd. Man. t. xvii. fig. 3 ; Collett Simla Flora, 231 fig. 71 

 (includes H. mysorensis,~W. et A.) — Syn. Spermadictyon suaveolens, Boxb. Cor. PI. t. 236. 



