An Encyclopedia of Horticulture. 



Ill 



Argemone — continued. 





Fig. 147. Inflorescence of Argemone grandiflora. 



A« mexioana (Mexican). DevU's Fig. Jl. solitary, yellow ; petals 

 four to six. June. I. profoundlyrepand-sinuated, spiny, blotched 

 with white, h. 2ft. Mexico, 1592. Hardy annual. 



A. OChroleuca (yellowi^h-w liite).* Jl. pale yellow, solitary ; petals 

 six. Au;j;nst. /. profoundly sinuated or pinnatitid, glaucescent ; 

 nerves witli prickly bristles, blotched with white. Stem prickly. 

 Mexico, 1S27. Hardy annual. 



ARGENTEUS. 



silver. 



Silvery. A pale colour resembling 



ARGOLASIA. See Iianaria. 



ABiGYKZSIA (from ar(7(/reios, silvery; in reference to 

 the silvery undersides of the leaves). Silver-weed. Ord. 

 ConvolvulacecE. An elegant genus of greenhouse and 

 stove climbers. Sepals five ; corolla campanulate. Shrubs 

 for the most part silvery, but sometimes silky and tomentose. 

 The greater number of the species are robust, extensive 

 twiners or climbers, usually requiring plenty of room to 

 run, before they will flower. A. cuneata, and one or two 

 others, are of dwarf habit, and produce their splendid 

 blossoms in abundance. All the species grow well in 

 light rich soil, or a mixture of peat, loam, and sand. 

 Cuttings root readily if planted in sand, with a hand glass 

 placed over them, in a little bottom heat. 



A. capitata (headed). Jf., corolla lin. to 2in. long, rose coloured 

 or purple, hairy outside ; peduncles exceeding the petioles. July. 

 I. cordate-ovate, acuminated, 2in. to 5in. long, and lin. to 3ui. 

 broad, hairy on both surfaces ; hairs glandular at the base. 

 Plant clothed with strigose hairs. Silhet, 1823. 



A. cuneata (wedge-leaved).* Jl., corolla large, of a beautiful deep 

 bright purple ; peduncles downy, shorter than the leaves, three to 

 six-Howered. July. _ I. obovate-cuneate, euiarginate, glabrous 

 above, but beset with short, crowded hairs beneath, hardly petio- 

 late. Stem clothed with powdery down at top. k. 2ft. to 5ft. 

 India, 1822. 



Argfyreia — continued. j 



A. cymosa (cyme-flowered).* _/?., corolla pale pink, tubularly 

 funnel sbiijiea. villous outside; peduncles as long or longer than 

 the lea\ fs, leafy at top, and cymosely many-flowered, l. roundish- 

 cordate, or reniformly-cordate, obtuse, terminated by a very short 

 prickle, glabrous on both surfaces, or clothed with pruinose 

 down. Malabar (mountains), 1823. 



A. malabarica (Malabar), fi. x-ather small ; bottom of the bell 

 deep purple ; throat pink, with the edges paler, almost white, 

 and slightly ten-lobed ; peduncles as long or longer than tlie 

 leaves, many-flowered at the apex. June. L roundish -cordate, 

 acute, glabrous, or furnished with a few scattered hairs on both 

 sm-faces. Coromandel, 1823. 



A. pomacea (Apple-fruited). Jl. large, rose coloured ; peduncles 

 villous, exceeding the petioles a little, cymose, many-flowered. 

 Berry size of a cherry, yellow. L ovate-elliptic, obtuse, clothed 

 with cinerous, velvety down on both surfaces, but especially 

 beneath, sometimes sub-emarginate at apex, Mysore, 1818. 



A. speciosa (showy).* Jl., corolla nearly 2in. long, of a deep rose 

 CiiliMir: ]ndiiucles about equal in length to the petioles, um- 

 belliitely eapitate. July. I. 3in. to 12in. long, and 2in. to 4in. 

 broad, cordate, acute, glabrous above, or rarely villous, thickly 

 nerved beneath, and clothed with silky, silvery down. India, 1818. 



A. splendens (splendid).* Ji., corolla tubularly campanulate, lAin. 

 long, rather villous outside, pale red ; peduncles exceeding the 

 (hoary) petioles, corymbosely many-flowered. ., November. I. 

 ovate-oblong or ovate-elliptic, entire or pandurately sinuated, 

 sometimes somewhat three-lobed. smooth above, but clothed with 

 silvery, silky down beneath, 6in. long, acuminated. India, 1820. 



ARGYR0CH.3:TA. a synonym of Parthenium 



(which see). 



ARGTROXTFHIUM (from argyros, silver, and 

 xypliion, a corn-flag; in allusion to the leaves). Okd. 

 Conipositw. An ornamental greenhouse perennial herb. 

 Involucre campanulate ; receptacle conical ; heads pedun- 

 culate, racemose, or in thyrsoid panicles. Leaves alternate ; 

 lower ones close, elongated, thick, on both sides silver-lined. 

 Stems simple or slightly branched. It thrives well in rich 

 sandy loam and leaf mould. Propagated by seed-heads. 



C. sandwlcense (Sandwich Islands), /.-/leat^spurphsh. l. linear 

 lanceolate, imbricate, clothed, like the stems, with silvery hairs. 

 h. 3ft. Sandwich Islands, 1872. SVN. Argyrophyton Douglasii. 



ARIA. See Fyrus Aria. 



ARISiBlMtA (from aro/i, Arum, and sana^ a standard; 

 in reference to the close alliance to Ara7)%). Ord. Aroidece. 

 Small tuberous rooted greenhouse (except where stated 

 otherwdse) herbaceous plants. Spathe rolled round the 

 spadix at the base ; spadix bearing unisexual flowers below, 

 and rudimentary flowers in the upper part. Leaves peltate, 

 pedate, palmate, or simple. For culture, &c., see Arum. 



A. concinna (neat).* y^, spathe convolute, tubular at the base; 

 upper portion bent over at the mouth, and gradually narrowed 

 into a tail-like appendage about 3in. long ; spathe of the female 

 plant longitudinally barred with white and green, the latter 

 colour being replaced with blue-purple in the male. June. I. 

 solitary, sheathmg at the base, and made up of ten or twelve 

 lanceolate, entire, "light green leaflets, which radiate from the top 

 of the petiole, the latter being 1ft. to 2ft. high. Sikkim, 1S71. 



A. curvatum (curved).* Jl. crowning a scape which overtops the 

 ■foliage ; tube of spathe cylindrical, green, obscurely striped with 

 white ; the elliptic blade arches forward, green on the inner sur- 

 face, and brownish-red on the outer ; spadix produced mto a 

 purplish-red tail, about 1ft. long. April. I. pedate. The large 

 bracts, which sheath the base of the stem, are beautifully 

 marbled with dark olive green, red, and light gieen. h. 4ft. 

 Himalayas, 1871. SYN. A. hellehori folium. 



A. galeata (helmeted).* Jl., spathe about 4in long ; tube and 

 cylindrical side of spathe green, tinted purplish at base, mth 

 many longitudinal white lines ; inside of the tube purple. July. 

 /. solitary, trifoliate ; middle leaflet 6in. long by 3Jm. broad ; 

 lateral ones 7in. long and nearly 4in. broad, h. Ift. Himalayas, 

 Sikkim, 1879. 



A. Griffithi (t.iriflith"s).*y?., spathe large, hood-like, brown-violet, 

 with green veins ; spadix brown-violet, and the barren end at the 

 base above the flowers has a disk-like projection, while its free 

 extremity is prolonged into a long thread-like appendage. Spring. 

 I. with bold roundish leaflets, k. 1ft. to l^ft. Sikkim, 1879. 

 Hardy ; very handsome. SvN. A. Hookenanum. 



A. helleborifolium (Hellebore-leaved). A synonym of A. curva- 

 tum. 



A, Hookerianum (Hooker's). A syuouym of .4. Grlfftthi. 



A. nepenthoides (Nepenthes-like).* Jl., spathe above the tubular 

 portion extended into two decided auricles, which serve to dis- 

 tinguish it from other species, ochre, brow n, green ; spadix yel- 

 lowisli. Snriug. I. pedate, of Ave lanceolate or oblanceolate 



