Supplement. 



651 



HIiIiICOPHTIjLUM (from helix, helikos, spiral, and 

 phylloUy a leaf; alluding to the lateral segments of the 

 older leaves). Ord. Aroidem {Aracece). A small genus 

 (four or five species) of Asiatic, greenhouse or hardy, 

 tuberous herbs. Flowers on an appendiculate spadix, the 

 males and females remote, with subulate, neuter organs 

 between ; spadix much shorter than the spathe, slender or 

 robust ; spathe marcescent, the tube oblong, sub-vontricose, 

 persistent, the lamina oblong, erect; peduncle much 

 shorter than the leaves. Leaves Ion g-p etiolate, thickly 

 coriaceous, hastate or sagittate, or the young ones hastate 

 and the older ones pedatisect with segments confluent at 

 base ; lateral segments often spirally twisted. II. Alberti 

 proves hardy in a sunny border, in a well-drained, 

 sandy loam. It may be propagated from seeds, or by 

 means of the small tuber offsets. 



H. Alberti (Albert Regel's). /. very fetid; spadix Sin. lon^. 

 slender, the appendix bluish-black, ragji;ed at tip ; spathe 7in, 

 long, the tube pale green, the lamina dark maroon-purple within, 

 pale green outside, very thick, acuminate. May. I. ain. lon^, 

 hastate, acuminate, undulated, with two lateral, horn-like, hori- 

 zontal,' basal lobes, and between them two linear, erect ones; 

 petioles stout, 4in. long. Bokhara, 1884. (B. M. 6969.) 



HELZOFHILA. To the species described on p. 130, 

 Yol. II., the following should now be added : 



H. scandens (climbing). Jl. white, sometimes tinted rose, large, 

 racemose. I, lanceolate. Stems slender, tuining, 1887. An 

 interesting plant. 



HELIOTBOFZUM. To the species and varieties 

 described on p. 131, Yol. II., the following should now be 

 added : 



I 



H. incanum (hoary), /. in dichotomously corymbose spikes; 

 corolla white, twice as long as the calyx, rather hispid outside ; 

 peduncles hairy, June. L thick, ovate, acute, crenulated, 

 wrinkled above and lined with retrograde asperities, softer and 

 hoary beneath. Stem shrubby, h. 2ft. to 3ft. Peru. Green- 

 house. 



H. I. glabrnm (smooth). Jl. purple. L rough, broadly elliptic, 



destitute of hairs. 1884. (G. C. n. s., xxii.. p. 809.) 



HIiIaONIOPSZS (from Helonias, and opsis, resem- 

 blance ; alluding to the affinity of the genera). Stn. 

 SugeroJcia, Okd. Liliacem. A small genua (four species) 

 of greenhouse or hardy perennials, natives of Japan and 

 Formosa. Flowers solitary or few at the tip of the scape, 

 rather large, slightly nodding ; perianth segments distinct 

 or scarcely connate at base, oblong or narrow, sub-equal, 

 spreading; stamens six; scape erect, simple. Leaves 

 radical, petiolate, oblong or lanceolate, scarious-sheathed 

 at base. Rhizome short, horizontal. H.japonica, the only 

 species in cultivation, thrives in any fairly good garden 

 soil, and may be increased by divisions. 



H, Japonica (Japanese), fl., perianth rose-coloured, hve to six 

 lines lon*^, the segments free, narrow ; stamens very shortly 

 exserted ; pedicels usually longer than the flowers ; raceme short, 

 two to ten-f!owered. April. I. oblanceolate, at the flowering 

 period 3vn. to 4in. long and lin. broad, brownish towards the tips. 

 Japan, 1881. Wrongly called H. umhellata in G, C. ser. iii.. 

 vol. i.. p. 711. (B. M.6986.) 



HEMEROGALLIS. This genus embraces five 

 species, natives of Central Europe and temperate Asia, 

 Japan especially. To those described on p. 134, Vol. II,, 



the following variety tbould now be added: 



H. folva lon^tuba (long-tubed). Jl. orange-yellow, the slender 

 tubular portion of the perianth half as long as the segments, 

 Japan, 1885. (E. G. 1187.) 



HEMIGRAFHIS (from hemigraphos, half- written ; 

 in allusion to the shape of the corolla). Ord. AcanthacecB, 

 A genus embracing about a score species of stove or 

 greenhouse, annual or perennial herbs, inhabiting the East 

 Indies, the Malayan Archipelago, China, and Japan. 

 Elowers rather small, solitary or rarely twin, spicate ; 

 calyx deeply five-cleft or five-parted, the segments often 

 more or less connate below the middle ; corolla tube 

 slender, shortly enlarged above, the limb of five rounded, 

 spreading lobes ; stamens four, didynamous, included ; 

 bracts often imbricated ; braeteolea minute or wanting. 

 Leaves opposite, entire or toothed. For culture of the 



Hemigrapliis — contimied. 



species described below, see the allied genus Ruellia, 

 on p. 333, Vol, III, 



• colorata (coloured). Jl, white; corolla narrow, six to seven 

 lineslong ; spikes terminal, tetragonal, peduncuUte. L cordate, 

 ovate, crenate, hnllate, 2^in. long, IJin. broad, tinted silvery-grey 

 on the upper surface, purple heneath ; petioles IJin. lonp:. Stem 

 creeping, and, as wuJl as the petioles, loosely hairy. India, 1885. 

 Stove perennial. 



. latebrosa (secret). The correct name of the plant described 

 on p. 335, Vol. III., as RuelUa latebrosa. 



HE SSIFILXA (from Jiemi, half, and pilion^ a cap ; 

 alluding to the covering of the pollen muss). Ord. 

 OrchidecB. A small genus (only two spocioB) of stove 

 Orchids, with tbo habit of Ilabetiaria rotundifuliaj natives 

 of the East Indies. Flowers few in a raceme; sepals 

 nearly equal in length, the dorsal one concav©> the lateral 

 ones spreading, oblique; petals bmallor, undivided; lip 

 continuous with the column, spreading, ratlior broad, the 

 base produced in a spur;' column very short. Fteins 

 having one leaf at the base. For culture of If, calophylla, 

 see Pogonia, on p, 175, Vol. Ill, 



H. calophylla (Ijeautiful-leaved). /., sepals white and fn^een, 

 rarely purpi*' ; petals similar, but much snialler ; lip dark vinous- 

 purple, Ain. broad; raceme six to eightdlowcred ; scnpe 5in. tn 

 Yin. hi;;li, ^reen, .spotted reddish-brown. July. /. 2in. to 3in. 

 luu^, Uin. to IJin. broad, aeasiltj on the tuber, thu acute base 

 punk in tho ground, dark green, mottleil brown. Moulnicin,1886. 



(B. M. 6920.) 



HEFTAFLZiUKUM. To tho species described on 

 p. 136, Vol. II., tbe following should now be added: 



H. vltlcnse (Fiji). Jl. three to seven in an nmbel I digitate; 

 leaflets obovate-oblong, obtuse, narrowed to the petiole, entire. 

 with horizontally spreading veins. Fiji, 1887. fesYN. Agalrna 

 viticnsis. 



HESFERALOE (from hesperos, Western, and Aloe; 

 alluding to the aspect of the plant and its native habitat). 

 Oed. LiliacecB, A monotypic genua. The species is a 

 very striking and interesting, greenhouse plant having 

 a leafy stem or a very short caudex. For culture, see 

 Yucca, on p. 227, 



H. Engelmannl (Engelmann's). A synonym of U. ytccci/olia, 



H. yuccifolia (Yucca-leaved). /. pale rose-coloured, fascicled at 

 the sides of the rachis or branches of the loose racemes; perianth 

 cylindrical, straight, the segments narrow, sub-equal; stamens 

 six ; peduncle or scape leafless, 3ft. to 4ft. high, simple or with ft 

 few straight branches. I. clustered, Mnear, channelled, rijiid, the 

 margins white-lilamentose. Texas, 1832. Syn. Xf. Engehnanni. 



HESFEROCALLIS (from heaperoa. Western, and 

 hallos, beauty; in allusion to the babitat of tbe plant, 

 Hemerocallis, to which the present genus bears some 

 resemblance, being an Eastern one). Ord. Liliacece. A 

 monotypic genus. The species is a greenhouse or half- 

 hardy plant, with a short, woody caudex, allied to Hemero- 

 callis. For culture, see Yncca, on p. 227. 



H. tindulata (waved). Jl. whitish, sweet-scented, large, shnrtly 

 pedicellate, in a simple raceme ; perianth funnel-shaped, the tube 

 cylindrical, the lobes oblong-spathulate, longer than the tube, 

 erectO'patent ; stamens six ; bracta under the pedicels .scariose, 

 sometimes a few leafy ones below the inflorescence ; scape erect, 

 simple, February and March. L ra<iicaJ, linear, elonjrated, 

 undulated, rather thick, broadly ed^ed with white. California, 

 1882. 



(from exisoein, to be equal or like; in 

 reference to the conformity of the lip with the sepahi). 

 Syn. Euothoncsa, Okd. OrckidecB. A small genus (three 

 or four species) of epiphytal Orchids, inhabiting tro- 

 pical America from Brazil to Mexico. Flowers mediccro; 

 sepals nearly equal, narrow, the dorsal one free, the lateral 

 ones produced in a very short chin ; petals resembling the 

 dorsal sepal; lip erect, connate with the column at base, 

 the lateral lobes obscure, the middle one lanceolate, 

 spreading, equalling the sepals; colvimn short; pollen 

 masses four; racemes terminal, few-flowered; pednnclea 

 short. Leaves narrow, rather rigid. Only one species is 

 known in gardens. For culture, see Omitliidiiim, on 

 p. 524, Vol. IL ' 



Mdentata (two-toothedX A bright tcarlet, about Jin. in 

 diameter; sepals and petals linear, acute; Up narrow obovate- 



