Gerrardanthus 



( 367 ) 



Gilia 



GERRARDANTHUS. 



A greenhouse climber (ord. Cucurbitaceie), easily 

 raised from seeds sown in heat. Soil, rich, light loam. 

 Principal Species : 

 tomentosa. Aug., yel. 



GESNCRA. 



Description. A fairly large genus (onl. Gesner- 

 aeea 1 ) of tuberous-rooted, stove or intermediate 

 liimse ^ilant.-, that have downy stems and leaves, 

 and are of dwarf habit. The flowers are more or 

 less tubular, pendent or semi-pendent, and usually 

 very brilliantly coloured or spotted. Most of the 

 hybrids and named varieties have been raised on 

 the Continent. 



Propagation. By methods similar to those em- 

 ployed for Gloxinias, the usual one being division 

 of the tubers as soon as growth commences. 

 In a close, moist case, neither growth nor leaf 

 cuttings are difficult to root. Seedlings can be 

 raised in heat if the seed is sown on the surface 

 of fine, sandy soil, and covered with a glass. Sow 

 early in February. 



Soil. -Two parts of good, light loam, one part of 

 librous peat, and one part of leaf mould, with a 

 little dried and sifted eow manure, and sharp sand. 



Other Cultural Points. Tubers should be started, 

 as in the case of Gloxinias, and potted as soon as 

 lit. When rooting freely, a shelf in an inter- 

 mediate temperature will suit admirably .until 

 increased growth makes a position on the stage 

 below necessary. Water freely, and maintain a 

 humid atmosphere. 



Insects and Diseases. --Thrips will soon disfigure 

 the foliage, but if a properly moist atmosphere is 

 maintained they are no trouble. Green fly can be 

 kept at bay by periodical fumigation. A kind of 

 dry rot sometimes attacks the tubers. It seems 

 to be brought on by unduly hastening the period 

 of rest, or by a low temperature during that period, 

 and when once it sets in there is no cure. 



Principal Species and Varieties : 



Blassii, 1', sum., sc. 



Dirca'a Blassii). 

 uanliiialis, 14/,aut.,crim., 



BO., wh. throat (SI/IK. 



lateritia, macrantha, 



aud UircaM cardinalis). 

 Douklarii, '2', .Jy., red., 



throat yel. uajgelioides, 1.1', 



Douglasii, I.'.', Sep., red, aut., ro. pk., 



yel. 

 exouieusis, 1J/, win., or., 



sc., yel. ; hybrid, 

 lateritia (Paxton, we car- 



dinalis). 



eojiiililii, 1', sum., sc. 

 indleyi, 1J', Jy., 



sc., 

 atrosan- 



yel. ("'/it- 

 guiuea). 

 ma<Tnntha(s cardinalis). 



Other Species and Varieties : 



maculata, !', aut., pur. 



spotted (*i/. purpurea, 



verticillata, aud Dirca'a 



picta). 

 Marrhii, 21'. sum., sc. 



(KI/H. Corytholoma pen- 



dulinum). 



uajgelioides, 1.1', sum., 

 red: 



several fine vars., uot- 



ably aureo-roseum, cor- 



allina, and lilacinclla. 

 ])ur]iurea (.we maculata). 

 rrt'id^rns, 1^', sum., vio., 



spotted buff, wh. throat ; 



hybrid. 

 Van Houttei, 1}', Sep., 



car., wh., ro. 



idlagophylln, 1.1', ,Ty., or. 

 biilliosa (*/ magnified), 

 rimiiibarina (>vr Na'gt'lia 



cimiabarina). 

 rnclili'aris _!', Je., sc. 

 Cooperi, '!' , Je., sc. 

 disrnlor. 1 ['. Seji., red, 



yel. (///'. polyautha). 

 elougat:i, '_'', aut., sc. 

 Hookeri. l\', sum., sc. 

 lihaiiensis (.ice Penta- 



rhaphia 



longiflora (r Achimenes 



longifloni). 



niagnifica, 1.1', Aug., pur. 

 polrantha (of hutnniml 



ifaoatint, let discolor). 

 rupestris (we tuberosa). 

 rutila, '2', Aug., sc., yel. 

 sceutrum. '!', Jy., BC. 

 si-hif(li;ina (w Isolollia 



srhiediiinuiu). 

 Siittcnii, '2', Aug.jSC. 



tllbrnisa, li". .'int., SC. 



(.-i/ii. rujiestris). 



tuhiflora, 2', Mch. (now 



Arhimeues tubiflora). 

 verticillata (see maculata). 



vestita (we Isoloma vesti- 



tuin). 

 /;'lirina (w Ntegelia ze- 



brina) . 



GETHYLLIS. 



South African bulbous greenhouse plants (ord. 

 Amaryllideic). Propagation, by seeds and offsets. 

 Soil, peat, loam, and sand. A distinct resting 

 period must be allowed after flowering, gradually 

 reducing water, and giving little or none in winter. 



Principal Species : 



afro, 6', Jy., wh., red. (now Apodolirion lau- 



ciliaris, C", Jy., wh. ceolatum). 



lanceolate, 7', Jy., wh. spiralis, 9', aut., wh. 



GEUM. (AVENS.) 



Pretty, hardy, herbaceous plants (ord. Kosace.f) 

 for borders and rockwork. Propagation, by division 

 in spring or autumn, by seeds sown in a frame or in 

 pots in a greenhouse in early spring. Common soil. 



Principal Species and Varieties : - 



miuiatum, or. 

 moutauuiu, My., yel. ; a 



good plant. 



gramuflorum; superior. 



Heldreichii, or., red. 



rhicticum, 4', Je., yel. 

 rivale, H', Je., reel, pur. 



Water Avens. 

 Eoylei, 1^', Je., yel. 

 sylvaticum, 1'. Jy., yel. 



(//. utlaiiticuin). 

 triflorum, Je., red. 

 tyroleuse, 1^', Je. , yel. 

 urbanum, l}', Je., yel. 



chilouuse, 2', Je., sc. ; 



often known as coc- 



cineum. 

 grandiflorum plenum ; 



good for cutting. 



Other Species : 

 album, 1', Jy., wh. 

 coccineum, 1', Jy., sc. 

 elatum, H', Jy., yel. 

 japouicum, H', Je., yel. 

 macriiphylluin, 2', Jy.,yeL 

 molle, Je., 15', yel. 

 pyreuaicum, 1', Jy., yel. 

 reptaus, 6", Je., yelj ; 



var. flore pleno. 



GEVUINA (syn. < 



A South American genus (ord. Proteacea?), one 

 species only. Avellana, being known. It make.- :\ 

 tree 30' to 40' high, with whitish flowers and red 

 fruit. It should lie grown in sandy jx-at and loam 

 in a cool greenhouse or frame, standing out of 

 doors in summer. This is the Gtievina of the Keio 

 Hand- List, not of the Index SJotvcniiM. 



GILIA. 



Beautiful annual or half-hardy perennial nerl>s 

 (ord. Polemoniacese), very ornamental in beds or 

 borders, or on rockwork. Propagation, by seeds in 

 the open in April, or in a frame a little earlier. 

 They like .a rather light soil. The few perennial 

 species require to be kept free from rain. 

 1'nless otherwise marked, those named are annuals. 

 The genus Leptosiphon, which is referred by 

 botanists to Gilia, is treated under its garden 

 name in this work. 



Principal Species : 



achillejefolia, 1', Aug., 

 pur., bl. ; vars. with 

 wh. and red flowers are 

 Bl pri'tty as tin- tyjM-. 



aiidrosacea, 9", Aug., 

 lil., pk., ro., wh. 



tricolor, 1', Je.. vaii'm-: 

 valuable, many beauti- 

 ful vars., hybrid, useful 



i forms. 



(see Itciiealmia). 



Hrlnniil (xi'i- t'il/l/rnj>trris). 



(llierkin (< Cuwiniber). 

 Ghietbrtghtia (we I'ulmitlic). 



(illiiliil Off Tilllii'in " |. 



li'nii/1 l-'i-iini'l (< i''rri/!n). 

 tliii.1 (.'< /Ili-tia). 

 liiliriillur Mint (.-IT Wi'ittha). 

 (wv .-///""") 



