716 



HECHTIA 



UEDERA 



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

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

 lon^. Give perforated pots and hiffh temperature. Mon. 

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



glomerita, ZuccCif. Ghiesbrechtii, Lem.). Lvs. 10-lS 

 in. long, ri^id, 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, SM'ff^ smeii). Labidtw. 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 Pa- 

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

 used as culinary herbs. 



pulegioidea, Pers. American Pennyroyal. Annual, 

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

 bescent : lvs. opi)osite, ovate to oblong-obovate, spar- 

 ingly serrate in the upper portion, mostly obtuse at the 

 apex and narrowed at the base, K-U-a in. long: fls. in 

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

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



HfiDEBA (ancient Latin name of the Ivy). Araliii- 

 ce(B. Ivy. Ornamental evergreen climbing shrubs, with 

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

 lvs., inconspicuous greenish fls. in terminal, peduncled 

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

 orwhitish berries. Somesmall-lvd. forms maj^ 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 

 tor 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 



1023. Hedera HchxCXJj). 

 Form with white-ribbsd leaves. 



places under trees it makes a handsome evergreen 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 oue, 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 the year in the 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: f r. a 3-5-seeded berry. Many 

 Araiiads have been described formerly as species of 

 Hedera which are now referred to other genera. A good 

 popular monograph is Shirley Hibbei'd'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: 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 00 varieties 

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

 markable are the following : Var. Algeri^nsis, Hort. 

 Lvs. roundish or broadly ovate, entireor slightly3-lobed, 

 rather large, bright green ; a variegated form has the 

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

 (U. arhbrea, Hort.). Not climbing, forming an erect, 

 low shrub: lvs. 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 lvs. Var. aurantlaca, Andrd. 

 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. 

 Canari6nsiB, 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. 

 maiyinAta mhwr, Hort.). Slow-growing, with rather 

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

 orpink in fall. Var. chrysocirpa. Ten. {H.chrysocdrpa, 

 Walsh. U. poeti)rtim,, Bevtol.). Lvs. rather small, usu- 

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

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

 or 3-lobed, undulate. R.H. 1890, p. 103. Var. crenMa, 

 Hort. {U. vilifvlia and H. diijitUla ndva, Hort.). Simi- 

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

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

 Lvs. rather small, bluntly del told, almost entire, blackish 

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

 digitata. Loud. Lvs. rather small, deeply palmately 

 lobed, with narrow lobes and prolonged middle lobe. 

 M.D.G. 1807:229. S.H. 2:237. Var. Donerailgnsia, 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. Hib6mica, Koehne (H. Scdtica, 

 Ilort. ). 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. maculata, Hort. {H. latifblia mneulMa, 

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

 striped yellowish white. Var. Mader^nsis varieg6.ta, 

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

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

 margin&.ta, Hort. Lvs. broadly triangtilar-ovate, irreg- 

 ularly bordered yellowish white, striped red or pink in 

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

 Hort. (vars. tricolor, eteijiDitlssima, Ciillisi, Hort.). 

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

 fall. Var. marmorita, Hort. Similar to var. Hibernic:\, 

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

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

 and middle lobe not much prolonged. Var. rhbrnbea, 

 Arb. Kew. (//. rhumbea, 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. rhbmbea-varie- 

 g^ta, Hort. (IT. siibmargindta, Hibberd. IT. Japotiica 

 fttrlegAlii, Hort. ff. Jnpinica arrjMea, Hort.). Lvs. 

 like those of the preceding, but with n.arrow white mar- 

 gins. Var. sagittif61ia, Hort. Lvs. rather small, with 

 triangular middle lobe and short, blunt lateral lobes, 



