COXVOLVULACE.E 283 



node 3 mm. long ; 2nd hardly developed ; 3rd 1'8 crn. ; 4th 5 mm. ; 

 5th 6-2 cm. 



Leaves palmately five- to seven-nerved and -lobed, glabrous, light 

 green ; petioles slender, nearly terete, slightly channelled above, 

 glabrous, pale green or tinted with purple. 



No. 1. Very small, almost rudimentary, five-fid or -toothed. 



No. 2. Much larger, but still very small, palmately five-lobed ; 

 middle lobe much the largest ; basal smallest. 



Nos. 3-6. Palmately five-sect with the basal and smallest lobes 

 again divided on the posterior side into a more or less distinct lobe ; 

 middle lobes rhomboid-lanceolate, acute, alternately penninerved 

 and subreticulate, with a few irregular sized teeth, about the middle 

 on each side middle lobe largest, but similar to the rest in shape 

 and margin. 



Ipomcea palmata, Forsk. 



Hypocotyl 2-3 cm. long, about 2 mm. thick, terete, smooth 

 near the base, somewhat warty under the cotyledons, herbaceous, 

 purplish-brown. 



Cotyledons with glabrous, channelled, purplish-green petioles 

 1 cm. long, 1-25 mm. thick ; lamina deeply bifid, 2-5 cm. long, with 

 a short midrib forking a little below the sinus, and giving off two, 

 rarely three, primary nerves into each lobe, running nearly parallel 

 to each other, without distinct union within the apex of the lobe, 

 glabrous, thin, light green, paler beneath, somewhat persistent. 



Stem short, terete, slightly scabrous or warty, herbaceous, pur- 

 plish ; first few internodes 2 mm. long, 1*25 mm. thick. 



Leaves radiately incurvinerved at the base, alternately nerved 

 upwards, and reticulate, glabrous, membranous, light green above, 

 paler beneath ; petioles rather long and slender, subterete. 



No. 1. With channelled, glabrous, purplish petiole 3 cm. long, 

 1 mm. wide, and a broadly cordate blade, 2-5 cm. long, and as 

 wide, acuminately trifid at the apex, obtusely angled near the 

 cordate or subcordate base, with seven radiately incurving nerves, 

 glabrous thin, yellowish -green above, paler beneath. 



No. 2. Similar. 



No. 3. Similar, but more palmatifid. 



No. 4. Nearly palmatilobed, all the lobes being mucronate- 

 acuminate. 



Convolvulus sepium, L. 



Pistil surrounded at the base by an annular disk ; ovary of two 

 carpels, two-celled or by the early rupturing of the septum one- 



