226 cxxiiic. MORACEiE (Hutchinson) . [Treculia. 



a true involucre ; bracteoles on the capitula suirounding the flowers 



peltate or rounded at the apex. 



Species 7, one in Madagascar, the others endemic in Tropical Africa. 



Male flower-heads l-i-2^ in. in diam. ; anthers l-l^ 



lin. long ; fruits very large ... ... ... 1. T. africana. 



Male flower-heads less than -^- in. in diam. ; anthers 

 less than } lin. long ; fruits (where known) 

 small. 

 Floral bracts of the male ovoid or subclavate at 

 the apex, without a terminal peltate ap- 

 pendage. 

 Male receptacles globose 2. T. acuminata. 



Male receptacles ellipsoid or obovoid ... 3. 2\ obovoidea. 



Floral bracts of the male with a flat peltate ap- 

 pendage at the apex. 

 Stamens 2. 



Leaves glabrous ... ... ... ... 4. 7'. Zenkeri. 



Leaves softly pubescent below ... ... 5. T. mollis. 



Stamen 1 ; leaves glabrous ... ... ...(>. 7'. parva. 



1. T. africana, Decne in Ami. tici. Nat. 3wie ser. viii. 109, t. iii. 

 fig. 86-99. A lofty tree up to 80 ft. high, exuding a whitish latex : 

 trunk straight, 1-2 ft. in diam. at the base, bare below up to two- 

 thirds of its height, loosely branched above ; branches spreading 

 horizontally or slightly deflected, long and strong, tortuous ; young 

 branchlets dark-purple, glabrous. Leaves elliptic or ovate-elliptic, 

 shortly and obtusely pointed at the apex, rounded and oblique at 

 the base, usually about 3-8 in. long and lj-4 in. broad, coriaceous, 

 some (probably from young and vigorous shoots) unequally cordate 

 at the base, up to 17 in. long and 7J in. broad, and then thinly 

 chartaceous, all glabrous, reddish-brown when dry ; lateral nerves 

 in the smaller leaves about 6 on each side of the midrib, arcuate, 

 looped within the margin, prominent below, in the larger leaves 

 up to about 15 on each side of the midrib ; tertiary nerves and veins 

 loosely reticulate below; petiole J- J in. long ; stipules caducous, 

 lanceolate, acute, ^-| in. long, submembranous, often minutely 

 puberulous outside. Flowers dioecious. Male heads axillary, very 

 shortly pedunculate, globose or slightly ellipsoid, li-2J in. in diam. 

 when the anthers are ripe, beset with peltate densely crowded 

 puberulous scales between which the anthers emerge. Perianth 

 usually 2-fid ; lobes erect, ciliolate, closely embracing the filaments. 

 Stamens 2-4, when 2, then often the third inclined to be rudimentary, 

 similarly when 3 some of the flowers have 4 stamens and the anther 

 of the fourth is often much smaller than the others ; filaments 

 stout and glabrous ; anthers 1-1 J lin. long. Fruit a syncarp, 

 more or less globose, as large as to twice as large as a man's head, 

 yellowish outside when ripe, very rough with the knob-like tops of 

 the perianth-segments; style with two exserted lobes, slender. 



