Ramaley: SEEDLINGS OF CEKTAIX WOODY PLAVTS. 79 



dons appearing above ground in about four weeks. Sometimes 

 the seeds do not germinate till the second year. 



The cotyledons are ovate, petiolate, veined. When they first 

 appear the blades are about 10 mm. long and 6 mm. broad. 

 They grow to about 18 mm. in length, and a corresponding width 

 before the first leaves appear, after which time they do not in- 

 crease in size. The petiole is about 8 mm. long. The hypo- 

 ". is stout, from 2530 mm. long ; it does not grow longer. 



The leaves are all alternate, ovate-heart-shaped, irregularly 

 dentate, palmately 5-veined. When the first leaf appears the 

 epicotvl is about 8 mm. long. It may eventually reach a length 

 of 10 or 12 mm. 



Parthenocisstts quinquefolia (Lrxx.) PLANCH. 



This is the familiar ** Virginia creeper," a native of the 

 United States and frequently planted. Seeds germinate in 

 about three wee 



.e hvpocotyl is stout, from 20-40 mm. long. The cotyle- 

 dons are long-petiolate. The blade is cordate, prominently 

 veined, at length 20 mm. long, 20 mm. broad. The petiole is 

 channeled, 20 mm. long. Both hypocotyl and petioles are pink 

 except that part of the hvpocotyl which is below ground. The 

 hvpocotyl becomes verv much thickened toward the end of the 

 season, exhibiting a well-marked *' region tigellaire." 



The epicotyl is undeveloped, the first leaf arising just above 

 the cotyledons. Leaves are all alternate and quinquefoliate 

 from the beginning. The first do not differ from the later 

 ones. 



STERCULIACRE. 



Sterculia platanifolia. Lixx. 



The seeds of this oriental tree germinate in about a month 

 after planting. A part of the seed coat is often attached to the 

 cotyledons when they first appear above the ground. 



The hypocotyl is stout, 40 mm. long at the time the cotyle- 

 dons open. These are broadly oblong or orbicular, entire, 

 slightly cordate at base, with petioles nearly as long as the 

 blades. The latter are at first about 18 mm. long and 16 mm. 

 broad but become very large, sometimes 40 mm. long and 45 mm. 

 broad. They are palmately five-veined. The midvein forks 

 some distance from the apex. 



