348 ON SEEDLINGS 



may be given as a good type of those with short-petioled coty- 

 ledons. V. cebennensis and V. Cynthiana agree both in the 

 cotyledons and the primary leaves. The first one is cordate 

 and coarsely dentate-serrate, the second subtriftd. The first 

 leaf of V. Cynthiana is sometimes at least as far advanced 

 as the second in other cases. A very distinct type is met 

 with in V. hypoglauca (fig. 247), where the hypocotyl remains 

 undeveloped and the broadly cordate, obtuse cotyledons are 

 carried up on very long petioles. The first leaf is a small 

 scale. 



Parthenocissus tricuspidata is probably a species of Vitis, 

 as its cotyledons agree very fairly with those of V. cebennensis. 

 The first leaf is tripartite, with cuneate, serrated, hairy seg- 

 ments. 



Parthenocissus tricuspidata, Planch. 



Hypocotyl erect, terete, glabrous, 2-2-5 cm. long, red. 



Cotyledons almost triangular, with rounded edges, obtuse, entire, 

 petiolate, glabrous, green, pinnatinerved, with the nerves near the 

 base more prominent ; petioles I 1 5-2 cm. long, channelled on the 

 upper side. 



Stem erect, herbaceous, ultimately woody, red; 1st internode 

 1-1-5 mm. long. 



First leaves simple, digitate, cauline, alternate, petiolate, stipu- 

 late, trifoliolate, trinerved ; leaflets lanceolate, acute, coarsely 

 serrate, ciliate, covered with short stiffish hairs, green with a reddish 

 tinge, pinnatinerved ; petioles long, reddish, channelled on the upper 

 side, slightly hairy ; stipules membranous, reddish, oblong, entire. 



Vitis hypoglauca, F. Muell. (fig. 247). 



Hypocotyl short and subterranean, terete, tapering downwards. 



Cotyledons large, unequal, cordate or rotund-cordate, obtuse, 

 strongly trinerved with two lateral, shorter ones at the base, reti- 

 culate, petiolate, glabrous, shining on both surfaces, deep green 

 above, paler or subglaucous beneath ; lamina of the larger one 

 2-9-3-9 cm. long, 2'6-S-l cm. wide ; lamina of the smaller one 

 2-8-8-4 cm. long, 2-4-2-9 cm. wide ; petioles long, semiterete, 

 shallowly grooved above, glabrous, colourless or pinkish, 6-8-5 cm. 

 long, often slightly unequal, with the larger one having the longest 

 petiole by 3-7 mm. 



Stem erect at first, terete, slender, glabrous, pale green, ulti- 



