TILIACE^E 



283 



seven-nerved at the base, and alternately nerved upwards, reticulate, 

 pubescent on both surfaces in the seedling stage, becoming glabrous 

 in the adult plant, with woolly tufts at the junction of the lateral 

 nerves and the midrib on the under side, more or less shiny on both 

 surfaces, deep green above, paler beneath ; stipules oblong, obtuse, 

 seated at the union of the petiole with the stem, pale-coloured or 

 scarious, deciduous ; petioles terete, tapering upwards from a stout 

 base, densely pubescent with simple or stellate hairs. 



No. 1. Cordate-ovate, acuminate, five- or faintly seven-nerved 

 from the base, irregularly serrate, slightly oblique at the base or 

 almost equal, with strong axillary buds. 



No. 2. Cordate, acuminate, obtuse or subacute, more or less 

 oblique at the base, irregularly serrate, with strong axillary buds. 



Tilia petiolaris, DC. (fig. 224). 



Fruit five-celled, one-seeded, globose, tomentose or downy and 

 pale greenish-white, thick-walled, woody or corky internally, inde- 

 hiscent. 



Seed globose or subobovoid, pale white, pushing the other cells 

 aside and monopolising the greater part of the fruit ; hilum 

 ventral somewhat above the base; 

 raphe ventral ; chalaza apical or rather 

 towards the dorsal aspect of the upper 

 end of the seed, marked externally with 

 a clear or nearly transparent space, but 

 very prominent internally, forming a 

 shortly conical projection with a broad 

 base ; radicle inferior. 



Endosperm in the young seed pale, 

 transparent, and soft or fleshy, according 

 to age. 



Embryo in a very young stage 

 straight, with a stout, obtuse, radicle 

 and two ovate, obtuse, plano-convex, Fl 

 fleshy, pale green cotyledons. 



-IT 



224. Tilia petiolaris, x 4. 

 Longitudinal section of fruit: 

 Ch, chalaza ; C, cotyledons ; OT, 

 testa; IT, tegmen ; P, endo- 

 sperm ; PC, pericarp ; H, hilum ; 

 AO, aborted ovule. 



Aristotelia racemosa (fig. 225). 



Boot long, woody, branched, with 

 many brown fibrous lateral rootlets. 



Hypocotyl woody, 1-2 cm. long, 1 mm. thick, terete, smooth, 

 yellowish-brown. 



Cotyledons shortly stalked, 5-6 mm. long, 3-4 mm. broad, 

 broadly ovate or oblong-ovate, rounded at base and apex, entire, flat, 



