716 



HECHTIA 



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

 tervals o£ 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 (189G). 



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

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

 rowed gradually to the sharp-pointed apes ; 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. 



HEDEdMA (Greek, si«f( sme/i). LaUHtcB. Ameri- 

 can Pennyrotal. This is a plant of no ornamental 

 value, but the seeds aro 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- 

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

 used as culinary herbs. 



ptilegioides, Pers. American Pennyroyal. Annual, 

 &-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-IJ^ in. long: fls. in 

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

 with 3 large lobes. July-Sep. B.B. 3:10G. 



HfiDERA (ancient Latin luime of the- Ivy). Ariilii)- 

 ceiE. Ivy. Ornamental evi iL-n rn , ! ithI.im - shrubs, with 

 alternate, entire or palmni' : !, long-petioled 



lvs., inconspicuous green i !. :' il. peduncled 



umbels, appearing in fall. :ii"l i'i ni.. i :ir. iy yellow, red 

 or whitish berries. Somesmail-lMl. intm-i 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 w:dls, rocks, trunks of trees and trellis- 



used for covering walls in cool greenh 

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

 ular window-garden plant, enduring many uncongenial 

 conditionsand thriving without bright sunlight. In shady 



lOM Hedera Helix (X',) 

 rorm with white ribbsd le i\ps 



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 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 the year in the green- 

 house or in frames, or, in more temperate regions, in 



HEDERA 



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 ciminKs of 

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

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

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

 Araliads have been described formerly as species of 

 Iledera 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: lvs. usually 3-5-lobed. dark green 

 above, pale or yellowish green beneath, -those of the 

 dowering 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. AlgeriSnsia, Hort. 

 Lvs. roundish or broadly ovate, entireorslightly3-lobed, 

 rather large, bright green ; a variegated form has tho 

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

 (U. (irldrea, 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. aurantiaca, Andr^. 

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

 3-loIjetl. the middle lobe often with few coarse teeth, 

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

 Canari^nsis, 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. Civendishi, Hort. (var. 

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

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

 orpink infall. Var. chrysocirpa, Ten. (U.chrysoedrpa, 

 Walsh. i7. ;)0(><f)j-Hwi, Bertol.). 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.ll. l^'i'i, ] , v:'. Var. crenita, 

 Hort. (H. rilifoUa and n. <h. ' llrf.l. Simi- 



digii 



lob. 



■gin, light gr.. ... \ :. 

 Lvs.rathersmall, bluntlydeltuid, ;il:., 

 , changing to dull purplish br 



jidea, Hort. 

 il:. blackish 

 fall. Var. 



bed, with narrow lobes and prolonged mil 

 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. gricilis, Hort. 

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

 bronzy in fall. Var. Hibfimica, Koehne {IT. Scotica, 

 Hort.). Lvs. l:ir-.-, w-iih short and broad lobes. Var. 

 lobita major, lint. Simihir to the preceding, but lvs. 

 somewhat sujall. r, inMn- .i.-eply lobed and lobes nar- 

 rower. Var. maculata, II. .rt. {ff. latifblia mncnUta, 

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

 striped yellowish white. Var. MaderSnsis variegita, 

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

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

 margin&ta, Hort. Lva. broadly triangular-ovate, irreg- 

 ularly bordered yellowish white, striped red or pink in 

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

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

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

 f:tll. Var. marmorata, Hort. Similar to var. Hibernica, 

 but lvs. iire,L;ulnrly lilotched yellowish white. Var. pal- 

 mata, II. .rt. Simiiar to var. digitata, but lobes broader, 

 ati.l iin.l.lle l"lje not much prolonged. Var. rhdmbea, 

 .\rb. Kew. {H. 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.rh6mbea-varie- 

 gata, Hort. (H. sitbmargindia, Hibberd. ff. Japdnica 

 fariegilta, Hort. IT. Japduica arghitea, 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. 



