716 



HECHTIA 



HEDEEA 



small sessile, axillary, yellow-bracted heads, borne at in- 

 tervals of an inch or so on a very slender scape 2 ft. 

 long. Give perforated pots and high temperature. Mon. 

 by C. Mez in DC. Mon. Phan. 9:543-551 (1896). 



glomerata, Zucc. (H. Ghiesbrechtii, Lem.). Lvs. 10-18 

 in. long, rigid, leathery, 9-12 lines wide at base, nar- 

 rowed gradually to the sharp-pointed apex : bracts 

 sheathing, acuminate : corolla 3-lobed nearly to the 

 base ; stamens 6 : ovary 3-celled. B.M. 5842. I.H. 

 10 :378. Soil of chopped moss, old manure and charcoal. 



HEDEOMA (Greek, sweet smell). Labidtce. AMERI- 

 CAN PENNYROYAL. This is a plant of no ornamental 

 value, but the seeds are offered by our nurserymen to 

 those who cultivate the plant for its medicinal oil, which 

 is commonly sold in drug stores. It is claimed to be offen- 

 sive to mosquitoes, and the plant can be easily natu- 

 ralized in dry, sandy spots. It is common in woods and 

 along roads. The genus has about 16 species, all Amer- 

 ican. The Pennyroyal of the Old World is Mentha Pu- 

 leyium, sometimes cult, for its Ivs. and tops, which are 

 used as culinary herbs. 



pulegioides, Pers. AMERICAN PENNYROYAL. Annual, 

 6-18 in. high: stem very slender, much branched, pu- 

 bescent : Ivs. opposite, ovate to oblong-obovate, spar- 

 ingly serrate in the upper portion, mostly obtuse at the 

 apex and narrowed at the base, K-1% in. long: fls. in 

 axillary clusters; corolla purple, 2-lipped, the lower one 

 with 3 large lobes. July-Sep. B.B. 3:106. 



HfiDEKA (ancient Latin name of the Ivy). Aralid- 

 cece. IVY. Ornamental evergreen climbing shrubs, with 

 alternate, entire or palmately 3-5-lobed, long-petioled 

 Ivs., inconspicuous greenish fls. in terminal, peduncled 

 umbels, appearing in fall, and black, rarely yellow, red 

 or whitish berries. Somesmall-lvd. forms may be grown 

 North if protected during the winter, but most of the 

 larger-lvd. and variegated forms are too tender north 

 of the middle states. The Ivy is a very valuable plant 

 for covering walls, rocks, trunks of trees and trellis- 

 work, and sometimes climbs very high. It may also be 

 used for covering walls in cool greenhouses, for screens 

 in drawing-rooms and for hanging baskets. It is a pop- 

 ular window- garden plant, enduring many uncongenial 

 conditions and thriving without bright sunlight. In shady 



r 



1023. Hedera . 



Form with white-ribbed leaves, 

 places under trees it makes a handsome evergreen car- 

 flow ^h !? alS T , ften US6d f r borders of shrubberies or 

 flowerbeds. It grows in almost any soil, but best in a 

 somewhat moist and rich one, and in shaded positions 

 The climbing or creeping branches do not flower; fls 

 are produced on erect, bushy branches, appearing on 

 old high-chmbing plants only. Prop, by cuttings of 



" 1P o e r n i e n f7 d * W*** the ? 6ar in t he * 

 or m frames, or, m more temperate regions, in 



the open ground in fall ; gentle bottom heat will hasten 

 the development of roots considerably; also increased 

 by layers and by seeds. The slow-growing forms, espe- 

 cially the shrubby ones, are often grafted on cuttings of 

 strong-growing varieties. Two species in Eu., N. .Afr 

 and Asia. Fls. perfect ; calyx 5-toothed ; petals and 

 stamens 5 : ovary 5-celled : fr. a 3-5-seeded berry. Many 

 Araliads have been described formerly as species of 

 Hedera which are now referred to other genera. A good 

 popular monograph is Shirley Hibberd's "The Ivy: A 

 Monograph, comprising the history, uses, characteris- 

 tics, and affinities of the plant, and a descriptive list of 

 all the garden Ivies in cultivation." London, 1872. 



Helix, Linn. IVY. ENGLISH IVY. Fig. 1023. High 

 climbing or creeping: Ivs. usually 3-5-lobed, dark green 

 above, pale or yellowish green beneath, those of the 

 flowering branches entire, generally ovate: calyx with 

 minute teeth ; calyx, pedicels and tips of young branches 

 covered with grayish white stellate hairs: fr. black 

 sometimes yellow. Eu., Canaries, N. Afr., Asia.-A 

 very variable species, of which more than 60 varieties 

 are cult, in European gardens. Some of the most re- 

 markable are the following : Var. Algeriensis, Hort. 

 Lvs. roundish or broadly ovate, entire or slightly 3-lobed, 

 rather large, bright green ; a variegated form has the 

 Ivs. edged yellowish white. Var. arbor6scens, Loud. 

 (H. arborea, Hort.). Not climbing, forming an erect 

 low shrub: Ivs. ovate to elliptic, entire. This variety is 

 gained by using flowering branches for propagation. 

 There are also some variegated forms, as Silver Queen 

 with silvery variegated Ivs. Var. aurantiaca, Andre. 

 Lvs. rather small, ovate or triangular-ovate, entire or 

 3-lobed, the middle lobe often with few coarse teeth, 

 greyish green:' fr. orange-red. R.H. 1884:84. Var. 

 Canari6nsis, DC. Lvs. large, roundish ovate, entire or 

 slightly 3-lobed, bright or yellowish green, to 8 in. 

 broad, those of flowering branches often broader than 

 long. Canaries. Tender. Var. Cavendishi, Hort. (var. 

 margindta minor, Hort.). Slow-growing, with rather 

 small dull green Ivs., edged creamy white, striped red 

 or pink in fall. Var. chrysocarpa, Ten. ( H. chrysocarpa, 

 Walsh. H. poetdrum, Bertol.). Lvs. rather small, usu- 

 ally 3-lobed, grayish green : fr. yellow. Var. conglom- 

 erata, Hort. Slow-growing: Ivs. crowded, small, entire 

 or 3-lobed, undulate. R.H. 1890, p. 163. Var. crenata, 

 Hort. (H. vitifolia and H. digitata nova, Hort.). Simi- 

 lar to var. digitata, but lobes shorter and broader, c 

 nate at the margin, light green. Var. deltoidea, Ho 

 Lvs. rather small, bluntly deltoid, almostentire, blacki 

 green, changing to dull purplish bronze in fall. V 

 digitata, Loud. Lvs. rather small, deeply palmat.^ 

 lobed, with narrow lobes and prolonged middle lobe. 

 M.D.G. 1897:229. S.H. 2:237. Var. Donerail<nsis, Hort. 

 Lvs. small, usually 3-lobed, with rather short, spreading 

 lateral lobes: of compact growth. Var. gracilis, Hort. 

 Lvs. rather small, with broad, short lobes, dull green, 

 bronzy in fall. Var. Hibernica, Koehne (H. Scotica, 

 Hort.). Lvs. large, with short and broad lobes. Var. 

 lobata major, Hort. Similar to the preceding, but Ivs. 

 somewhat smaller, more deeply lobed and lobes nar- 

 rower. Var. maculata, Hort. (H. latifblia maeulMa, 

 Hort.). Similar to var. Hibernica: Ivs. spotted and 

 striped yellowish white. Var. Maderensis variegata, 

 Hort. Similar to var. Canariensis: Ivs. not or slightly 

 lobed, edged white. Tender. G.C. II. 15:657. Var. 

 marginata, Hort. Lvs. broadly triangular-ovate, irreg- 

 ularly bordered yellowish white, striped red or pink in 

 fall: of somewhat slow growth. Var. marginata rubra, 

 Hort. (vars. tricolor, elegantissima, Cullisi, Hort.). 

 L ; ke the preceding, but edges of Ivs. becoming red in 

 fall. Var. marmorata, Hort. Similar to var. Hibernica, 

 but Ivs. irregularly blotched yellowish white. Var. pal- 

 mata, Hort. Similar to var. digitata, but lobes broader, 

 and middle lobe not much prolonged. Var. rh6mbea, 

 Arb. Kew. (H. rhdmbea, Sieb. & Zucc.). Lvs. rather 

 small, generally broadly ovate, entire or slightly lobed, 

 those of flowering branches elliptic or rhombic-ovate, 

 narrowed toward the base. Japan. Var. rh6mbea- varie- 

 gata, Hort. (H. submargindta, Hibberd. H. Japonicn 

 variegata, Hort. H. Japdnica argtntea, Hort.). Lvs. 

 like those of the preceding, but with narrow white mar- 

 gins. Var. sagittifdlia, Hort. Lvs. rather small, with 

 triangular middle lobe and short, blunt lateral lobes, 



t.). Simi- 

 'ader, cre- 

 lea, Hort. 

 !, blackish 

 :all. Var. 

 palmately 



