rlG 



HECHTIA 



ilEDERA 



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 hi?li temperature. Mon. 

 I>y C. Mez in DC. Mon. Phan. 9:543-551 (1896). 



glomer^ta, Zucc.(-S". Ghieshrechtii, 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). Lahidtic. Ameki- 

 -■AN Pennyroyal. This is a plant of no ornamental 

 value, butthe seeds are offered by our nurserymen to 

 those vrho 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 10 species, all Amer- 

 ican. The PeuTiyroyal of the Old World is Mentha Pii- 

 legiiim, sometimes cult, for its lvs. and tops, which are 

 used as culinary herbs. 



pule^oldes, Pers. American Pennyroyal. Annual, 

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

 bescent : lvs. 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. 3:10G. 



H£DEHA (ancient Latin name of the Ivy). AraJld- 

 cem. IvY. Ornamental evergreen climbiug shrubs, with 

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

 iv3., 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 tlie mi<ldle 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 

 ronditions and thriving without briglit sunlight. In shady 



1023. Hedera Helix (X ';i). 



FurDi with white-ribbed leaves. 



jilaces under trees it makes a handsome evergrecTi car- 

 pet, and is also often used for borders of shrubberies or 

 flower beds. 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-climbing plants only. Prop, by cuttings of 

 half-ripened wood at any time of tlie year in llie green- 

 house or in frames, or, in 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 

 lledera 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 allinities 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: lvs. 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. Algeri^nsis, Hort. 

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

 rather large, bright green ; a variegated form has the 

 lvs. edged yellowish white. Var. arbor^scens, Loud. 

 {If. arhorea, Hort.). Not climbing, forming an erect, 

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

 gained by using fl.owering branches for propagation. 

 There are also some variegated forms, as Silver Queen, 

 with silvery variegated lvs. 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. 

 Canari^nsia, DC. Lvs. large, roundish ovate, entire or 

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

 broad, those of flowering branches often broader thau 

 long. Canaries. Tender. Var. C^vendislii, Hort. (var. 

 ))ian/tiidta tnlnor, Hort.). Slow-growing, with rather 

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

 or pink in fall. Var. chrysoc^rpa, Ten. {H.chrjjsocdrpa, 

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

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

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

 or 3-lobed, undulate. R.ll. 1890, p. 103. Var. cren&ta, 

 Hort. {U. vitifblia and H. digituta iidva, Hort.). Simi- 

 lar to var. digitata, but lobes shorter and broader, cre- 

 nate at the margin, light green. Var. deltoldea, Hort. 

 Lvs. rathersmall, bluntly deltoid, alniostentire, blackish 

 green, changing to dull purplish bronze in fall. Var. 

 digitita, Loud. Lvs. rather -small, deeply palmately 

 lobed, with narrow lobes and prolonged middle lobe. 

 M.D.G. 1897:220. S.H. 2:237. Var. Donerail6nsis, Hort. 

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

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

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

 bronzy in fall. Var. Hib6rnica, Koehne (II. Scotica, 

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

 lob^ta m^jor, Hort. Similar to the preceding, but lvs. 

 somewhat smaller, more deeply lobed and lobes nar- 

 rower. Var. macul^ta, Hort. {H. latifdlia mnnd(ita, 

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

 striped yellowish white. Var. Mader6nsia varieg&.ta, 

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

 lobedj edged white. Tender, G.C. II. lo:G57. Var. 

 marginS-ta, Hort. Lvs. broadly triangular-ovate, irreg- 

 ularly bordered yellowish white, striped red or pink in 

 fall: of somewhat slow growth. Var. margin^ta rubra, 

 Hort. (vars. triroJor, elei/anlissiina , CulUsi, Hort.). 

 Lke the preceding, but edges of lvs. becoming red in 

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

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

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

 and middle lobe not much prolonged. Var. rhbmbea, 

 Arb. Kew. (If. rhonihra, 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. rll6mbea-varie- 

 g^ta, Hort. ( //". sulniiinyiniila, Hihherd. H. Jap6»ica 

 viiriegdta, Tlnrt. H. Jcpoiiica argentea^ Hort.). Lvs. 

 like those of tlie preceding, but with narrow wliite mar- 

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

 triangular middhi htbo and short, blunt lateral lobes, 



