AN ENCYCLOPAEDIA OF HORTICULTURE. 



139 



Hesperis continued. 



a somewhat moist sandy loam. The single sorts may be 

 increased freely by seeds ; the double forms must be 

 propagated by careful divisions of the roots, or by cut- 

 tings. The three species described below are hardy. 

 H. grandiflora (large-flowered).* /., racemes many-flowered, 

 crowded. I., radical ones oblong-ovate, obtuse ; cauline ones 

 lanceolate. Native country unknown. (B. M. 2683.) 

 H. matronalis (matronly).* Damask Violet ; Dame's Rocket ; 

 Dame's Violet ; Common Rocket, fl. various, usually sweet- 

 scented in the evening. Summer. I. shortly stalked or tapering 

 at the base, ovate-lanceolate or lanceolate, h. 2ft. to 3ft. South 

 Europe and all across Russian Asia. (Sy. En. B. 103.) There are 

 numerous double and single varieties of this handsome peren- 

 nial, all of which are very ornamental border plants. 

 H. tristls (sad).* Night-scented Stock, fl. whitish or cream- 

 coloured, or brownish-red or dark purple, fragrant at night ; 

 pedicels very long. Spring and summer. I., radical ones stalked, 

 upper ones sessile, ovate, acute, entire or toothed, 2in to 4in. long. 

 Stem much branched at the top. h. 1ft. to 2ft. Eastern Europe, 

 &c., 1629. Biennial. This should be grown on old walls, ruins, 

 and such like places, where the seeds may be sown in crevices, 

 (fee. (B. M. 730.) 



HESFEROSCORDON LACTEUM. A synonym 

 of Brodisea lactea (which see). 



HESSEA (so called in honour of Paul Hesse, a 

 botanical traveller). Including Imhofia. SYN. Peri- 

 phanes. OBD. Amaryllidece. A genus comprising about 

 four or five species of greenhouse bulbs, from the Cape 

 of Good Hope. Umbels many-flowered; scape solid. 

 Leaves linear or subulate. For culture, see Strumaria. 



H. crispa (curled).* fl. pink ; umbels many-flowered ; perianth 



segments wavy, flat. April to August. I. filiform, straight. 



A. 3in. 1790. (B. M. 1363, under name of Strumaria crispa.) 

 H. filifolia (thread-leaved). /. white ; perianth segments acute. 



November. 1. filiform, h. 6m. 1774. SYN. Imhofia filifolia. 



(B. R. 440, under name of Strumaria filifolia.) 

 H. gemmata (twin), ft. pale yellow ; perianth segments wavy, 



channelled ; peduncles very long ; scape flexuose. August. 



1. lanceolate, ciUate. h. 1ft. 1812. (B. M. 1620, under name of 



H. stellaris (starry), fl. pink ; perianth segments spreading 

 alternately, bearding beneath the ends. October and November. 

 I. linear-acute, entire, h. 6in. 1794. SYNS. Amaryllis stellaris, 

 Strumaria stellaris. 



HETERANTHERA (from heteros, variable, and 

 anther ; the anthers are variable). ORD. Pontederacece. 

 A genus containing about eight species of ornamental 

 aquatic perennial herbs, one of which is tropical African, 

 and all the rest American. Flowers blue or white, small, 

 produced from a spathe in the axil of a sheathing leaf- 

 stalk; perianth salver-shaped, with a long, slender tube, 

 and a spreading, six-lobed limb. Leaves roundish, long- 

 stalked or linear. H. limosa may be grown by the sides 

 of a pond or rivulet. The remainder require the same 

 treatment as other tender aquatics. 



H. limosa (bog).* fl., perianth tube slender; limb bright violet- 

 blue ; segments linear-oblong, obtuse ; peduncles one-flowered. 

 From May onwards. I. erect, from orbicular-ovate to almost lan- 

 ceolate, obtuse, pale bright green on both surfaces, striated with 

 numerous veins ; petiole oin. to lOin. long, stout, flstular. 

 America (hi bogs and marshes), widely distributed. Half-hardy. 

 (B. M. 6192.) 



H. reniformis (kidney-shaped). Mud Plantain. /. white. July. 

 I. roundish, kidney-shaped. South America, 1824. Greenhouse. 



HETEROCENTRON. A synonym of Heeria 

 (which see). 



HETEROCH-ffiTA. Now included under Aster and 

 Erigeron. 



HETEROG-AMOUS. When, in a flower-head, the 

 florets of the ray are either neuter or female, and those 

 of the disk male. 



HETEROLOMA. See Desmodium. 



HETEROMELES ARBUTIFOLIA. A synonym 

 of Photinia arbutifolia (which see). 



HETERONOMA. A synonym of Arthrostemma 

 (which see). 



HETEROFAPPTJS (from heteros, dissimilar, and 

 pappos, down ; in reference to the pappus of the ray and 



Heteropappus continued. 



disk florets being different). OBD. Composite. A genus 

 comprising about four species of erect hardy herbs, natives 

 of Japan, Formosa, or Mandschuria ; closely allied to Aster. 

 Flower-heads rather large or medium, loosely and irregu- 

 larly panicled, or solitary at the apices of the branches; 

 corolla rays white or bluish. Leaves alternate, entire or 

 largely dentate. For culture, see Aster. 



H. decipiens (deceptive), fl.-heads large; ray purple, disk 

 yellow. Autumn. I. oblong-linear, acute. Mandschuria, 1863. 

 (R. G. 425.) 



H. hispidus (hairy).* fl.-heads white; scales of the involucre 

 oblong-iinbricated. September. I. oblong-lanceolate, scabrous, 

 ciliated ; lower ones ovate. Stem hispid ; branches one-headed. 

 h. 1ft. China and Japan, 1804. SYN. Aster hispidm. 



HETEROFTERYS (from heteros, various, and pteron, 

 a wing ; in allusion to the various forms of the winged 

 samarsa). OBD. Malpighiacece. A genus comprising about 

 eighty species of ornamental stove shrubs, rarely climbing, 

 natives of tropical, or rarely extra-tropical, South America, 

 and a few Western tropical African. Flowers small, very 

 often paniculate or racemose. Leaves opposite, and, 

 for the most part, entire, usually glandular beneath ; 

 petioles short; stipules inconspicuous. The two species 

 described below are stove climbers, closely allied to 

 Banisteria (which see for cultivation). 



H. chrysophylla (golden-leaved), fl., corolla orange-coloured, 

 becoming deeper and almost red in age ; peduncles axillary, 

 bearing an umbellate panicle. March. I. opposite, oval or oval- 

 oblong, entire, somewhat acute and waved, coriaceous, dark green 

 and glabrous above, and clothed with a golden-brown satiny 

 pubescence beneath. Brazil, 1833. (B. M. 3237.) 



H. purpurea (purple). fl. purple ; racemes axillary and terminal, 

 few-flowered. I oval, smooth, glaucous beneath. Tropical 

 America, 1759. 



This, in Greek compounds, signifies 

 variable, various. 



HETEROSPATHE (from heteros, variable, and 

 spathe, a spathe ; alluding to the inequality in the size 

 of the spathes). OBD. Palmece. A monotypic genus, the 

 species being an elegant stove palm, with a graceful 

 spreading habit, and remarkable for the length of the 

 tapered segments of its pinnate fronds. It thrives in 

 rich sandy loam and leaf mould, and may be increased 

 by imported seeds. 



H. elata (tall).* I. pinnatisect ; leaflets iin. broad, with somewhat 

 wider intervals between them, bright green on both surfaces, 

 narrowing upwards into a long, slender, tapering point. Stems 

 smooth. Amboyna, 1880. SYN. Metroxylon elatum, of gardens. 



HETEROTHECA (from heteros, variable, and theca, 

 a sheath; in reference to the shape of the achenes). 

 SYNS. Calycium and Diplocoma. OBD. Composites. A 

 genus of hairy or glabrous, erect, hardy or half-hardy 

 herbs. Seven species have been enumerated (which may 

 probably be reduced to about five), natives of North 

 America and Mexico. H. inuloides probably the only 

 one in cultivation is a pretty plant, adapted for culture 

 in ordinary garden soil, but requires protection in winter. 

 Propagated by seeds, or by divisions. 



H. Inuloides (Inula-like). fl. yellow, large; involucre many- 

 leaved, closely imbricate, villosely hairy; receptacle honey- 

 combed ; corymbs loosely spreading, branched ; peduncles very 

 hairy. Summer. I. ovate-oblong, entire, hairy on both sides and 

 fringed at the margins ; root ones ovate, obtuse, bluntly toothed ; 

 stem ones sessile, somewhat amplexicaul, variable in shape. 

 Stems 1ft. to lift. high. Mexico, 1826. (S. B. F. Q. 246, under 

 name of Diplocoma viuosa.) 



HETEROTOMA (from heteros, variable, and tome, 

 a cut; corolla unequally cut). OBD. Campanulaceoe. A 

 genus containing four species of annual or perennial 

 herbs, natives of Mexico. Flowers pedunculate, in ter- 

 minal racemes ; corolla blue or golden. Leaves alternate, 

 petiolate. The species here described perhaps the only 

 one yet in general cultivation is a very ornamental 

 greenhouse or half-hardy plant. For culture, see half- 

 hardy species of Lobelia. 



