244 ON SEEDLINGS 



Navarettia involucrata, Buiz et Pav. 



Hypocotyl erect, terete, glabrous, 2'5-4 cm. long, light green, 

 colourless or stained with red. 



Cotyledons oval, obtuse, entire, with very long petioles, glabrous 

 or with a very few hairs on the petioles, green, rather distinctly 

 pinnatinerved. 



Stem erect, terete, herbaceous, glabrous, almost colourless or 

 reddish ; 1st internode 3-6 mm. long. 



First leaves compound, pinnate ; petioles long, with sometimes 

 a few hairs, exstipulate ; leaflets ovate, cuspidate, acute, sessile or 

 shortly petiolate, opposite, glabrous or with a few hairs, light green, 

 one-nerved. 



Cobsea scandens, Cav. (fig. 529). 



Ovary of three to four carpels, surrounded at the base by a 

 large-lobed wavy disk, three- to four-celled, many-ovuled ; ovules 

 attached by the ventral aspect, ascending, amphitropous, arranged 

 in two rows, one on each side the middle line of the placental axis 

 and equidistant between that and the margin ; micropyle inferior. 

 Capsule large, oblong, smooth, deep green and suffused with a 

 glaucous bloom, ultimately brownish - 

 yellow, three- to four-valved, three- to 

 four-furrowed, dehiscing septicidally at 

 the furrows ; placental axis large, form- 

 ing a triangular or sometimes quadran- 

 gular mass occupying the greater part 

 of the interior. 



Seed large, much compressed dor- 

 sally, oval or subelliptic in outline or 

 somewhat irregular, generally broader 

 FIG. 529. Cobcra scandens. an( j a i wavs emarginate at the lower end, 



L p n i g ane U Ky.f t and na wed to an obtuse point at the 

 dosperm; n, notch caused upper end, winged, brown, overlapping 



by hilum of another seed, , , ,, . i r -i 



x 2 . one another from the base upwards; 



radicle at the basal end ; hilum ventral 



below the middle of the seed, spathulate in outline ; raphe ventral, 

 extending from the hilum to the inner edge of the wing ; testa com- 

 posed of slender fibrous material, mixed with pulpy matter when 

 young. 



Endosperm in young seed soft, dirty white, enveloping the embryo 

 entirely, ultimately fleshy in the mature seed. 



Embryo in the centre of the endosperm, straight from first to 

 last, large occupying almost the entire length and breadth of the 



