258 



ARALIACEAE. 



HEDERA. Ivy. 

 (Family Araliaceae). 



Woody plants, typically climb- 

 ing by numerous aerial roots: 

 evergreen. Stems moderate, ter- 

 ete: pith moderate, spongy. Buds 

 small, conical, solitary, sessile, 

 naked or with about 2 fleshy un- 

 specialized scales. Leaf-scars al- 

 ternate, U-shaped, somewhat 

 raised: bundle-traces 5 or 7: sti- 

 pule-scars lacking. Leaves pal- 

 mately lobed and cordate or on the 

 older pendent shoots lanceolate, or 

 ovate or deltoid and round- or 

 acute-based. 



Winter-characters o f Hedera 

 Helix are noted by Bosemann, 37; 

 Fant, 48; and Ward, 1:147, f. 67- 

 68. The ivy is in a horticultural 

 class quite by itself where it can 

 be grown as a wall-covering. It 

 occurs in a very large number of 

 foliage varieties, some of them very beautiful. 

 Climbing. (1). H. Helix. 



Bushy or grafted as a standard. (2). H. Helix arborescens. 

 Winter-character references to Acanthopanax: A. penta- 

 phyllum (A. spinosum). Schneider, f. Ill; Shirasawa, 250. 

 A. ricinifolium. Schneider, f. Ill; Shirasawa, 248, pi. 5. A. 

 sciadophylloides. Shirasawa, 248, pi. 5. A. senticosum. Schnei- 

 der, f. 124. A. sessiliflorum. Schneider, f. 111. 



Two species of a related deciduous araliaceous genus, 

 Fatsia, with large palmately lobed leaves, are more or less 

 hardy, F. japonica and F. papyrifera. The pith of the lat- 

 ter, sliced into thin sheets, constitutes the Chinese rice-paper. 



