PartJiaincissvs 



VITACEAE Ampelopsis 



aa. Lvs. on flg. brts. 3-5-foliolate, 



Lateral lfts. very oblique at the base; lfts. 6-12 cm. long 2. P. heterophylla 



Lateral lfts. not oblique at the base. 



Plant stout: fls. many: lfts. 5-10 cm. long, more or less pubescent 



beneath 3. P. laetevirens 



Plant slender: fls. few: lfts. 3-5 cm. long, glaucous beneath .. 4. P. thomsonii 



1. Parthenocissus tricuspidata (S. & Z.) Planch. Boston Ivy mtMfc (P'a Ch'iang 

 Hu) (R.M. 620). Woody vine; fls. VI-VII; fr. bluish black, IX-X. Japan, central 

 China; locally in An., Che., Hun., Hup., Ki., Ku. Cliffs and tree trunks, or 

 cultivated, ornamental. Fig. 229. 



2. Parthenocissus heterophylla (Bl.) Merr. (P. landuk Gagnep.) Mffi (Ti Chin; Floor 

 Ornament) (PI. W. 1:102; Ph.J. 11:129). Woody vine; fls. VI; fr. VIII-IX. China; 

 Philippines; locally in An., Che., Ki. Cliffs. 



3. Parthenocissus laetevirens Rehd. (R.M. 619). Woody vine; fls. V1I-VIII. fr. 

 IX. Central China; locally in An., Che., Hun., Hup., Ki., Ku. Planted, orna- 

 mental. 



4. Parthenocissus thomsonii (Lawson) Planch. (R.M. 620). Woody vine; fls. VII; 

 fr. black, VIII. Himalayas, central China; locally in An., Che., Hun., Hup., Ki. 

 Cliffs. 



3. Ampelopsis Michx. UlIifjfiijM (Shan P'u T'ao Shu) 

 Deciduous climbing shrubs with lenticellate bark and white pith: infl. in cytnes 

 opposite the lvs. : fls. perfect, mostly 5-merous; petals expanding and falling separa- 

 tely: fr. 1-4-seeded. 20 species, in Asia and North America; 13 in China. (Greek: 

 ampelos, grape, and opsis, likeness.) 



Key to the Species 



a. Lvs. simple,often lobed. 



Lvs. glaucescent beneath 1- A - bodvnieri 



Lvs. green and more or less pubescent beneath 2. A. brevipedunculata 



Shallow lobes of the lvs. caudate-acuminate; margins 



remotely sinuate-dentate or denticulate: brs. glabrous 2a. A. brevipedunculata 



var. kulingensis 



Lvs. deeply 3-5-lobed, with rounded sinuses, glabrous or 



glabrescent: peduncles long 2b. A. brevipedunculata 



var. maximowiczii 



aa. Lvs. compound. 



b. Lvs. trifoliolate or digitately 5-cleft or -foliolate. 

 Lvs. trifoliolate. 



Lfts. all sessile, mostly cuneate at the base: fr. 



orange or buff colored 3a. A. aconitifolia 



var. glabra 



Central 1ft. short-stalked; lateral lfts. very oblique: 



f r . dark blue 4 . A . delavayana 



Lvs. digitately 5-cleft or -foliolate: fr. orange or 



buff colored 3. A. aconitifolia 



bb. Lvs., or most of them, pinnately compound; some of the 

 lfts. compound. 

 Rachis of the If. broadly winged; lfts. sessile, mostly 

 cleft or compound; pinnae sessile and articulate, 



241 



