Geissorhiza 



( 363 ) 



Gentiana 



GEISSORHIZA. 



.South African bulbs (ord. Iridea:) that will grow 

 under the protection of a greenhouse wall, if 

 planted deeply and covered in winter, but are 

 safer indoors. Propagation, by offsets. Soil, peat, 

 loam, and sand. 



Principal Species : 



excisn. 6", My., wli. imbricata obtusata, 9", 



himrilis, (>", My., ro. yel. My., yel. 



(,V/. setacea). rocheusis, 8", My., vio. 



pur. 



Other Species : 



hirta. Ill", My., wh. setacea (set Humilis). 



Becuiida, 1'. My., wh. ; 



there is a bl. form. 



GEITONOPLESIUM. 



Only one species of this genus (tti'd. Liliacete) is 

 grown. It is cymosum, a purple green-flowered 

 Australian climber, requiring greenhouse protec- 

 tion and a peaty or loamy rooting medium. Prop- 

 agation, by seeds or cuttings. 



GELASINE. 



A rare bulbous plant (oril. Iridese) that, though 

 hardy in favoured localities, is best grown in a 

 greenhouse. It is allied to Romulea, and succeeds 

 in sandy soil. Propagation, either by offsets or 

 from seed. 



Only Cultivated Species : 



azurea, 1', My., Je., bl. 



GELSEMIUM. 



This climbing shrub (ord. Loganiaceie) is hardy 

 in some parts of the 'country, but is best cultivated 

 in a cool house in substantial loam and a little 

 dried cow manure. Propagation, .by cuttings in- 

 serted in sandy soil under a hand-light. The 

 Carolina Jessamine and the False Jessamine : are 

 Grlsrmium sempervirens. 



GENETYLLIS (see DAUWIXIA). 

 GENIPA. 



This genus (nrd. Rubiacea:) of evergreen stove 

 trees includes the South American Genipap, which 

 bears large, Orange-like fruits of considerable 

 merit. Propagation, by cuttings in early summer 

 under a bell-glass in a heated pit. Soil, peat, 

 loam or leaf soil, dried manure, and sand. 



Principal Species : 

 americaua, 2.)', yel. "The Meriaine, 12', wh. 



( lenipap." oblougifolia, 20', yel. 



cilulis (correctly Alibertia 



edulis). 



GENISTA. (BROOM.) 



A genus containing a large number of yellow- 

 flowered greenhouse or hardy shrubs (ord. Legu- 

 minosa;) of much beauty. They are closely allied to 

 the Cytisuses, and some confusion exists in gardens 

 regarding them. Some have prickles, and others 

 resemble the Cytisus in being unarmed. The 

 tender species are of much beauty in greenhouses 

 and conservatories, and the others are adapted for 

 shrubberies or for rockwork. All are hardy, 

 except those marked grh. Propagation, by seeds, 

 or by cuttings under glass. Almost any soil will 

 grow the Genistas. A number can be greatly im- 

 proved in appearance by cutting them back after 

 flowering. The greenhouse species can be repotted, 



Gela (tee Acranychia). 

 (fcloniiiui (gee llatonia). 

 Gembanya (sec Corypha). 



without disturbing the roots, in spring. (See 

 C'YTISLS and Sl'AKTIUM.) 



Principal Species and Varieties : 



hispanica, 3', My., -Jo. ; being dumetorum and 



neat for rock garden. italica. 



Var. nana is dwarfer. triangularis,, 3', Je. j 



tiuctoria, 3', Jy. (*>/. pretty on rockeries. 



I' lex uanus, not virgata, 6' to 10', My., 



Font). Dyer's Green- Je. A pretty species, 



weed. The double var. silky Ivs., does not 



is good. The form bloom until of a good 



elatior has some thirteen size (*//.. cinerea and 



syns. , among them data of gardens). 



Other Species : - 



a'thueusis, 10' to 12', Je., humifusa, Jy., yel.; 



Jy. (i/. Spartium let- trailer. 



nense). lusitanica, 2', My. 



auglica, 2', Jy. Petty mantica, 3', Jy. 



Whin. monosperma, 4', Jy. ; 



aspalathoiues, U', Jy., tender in open. 



yel. (xyits. eriuaceoiues parviflora, 3', Jy. 



and Spartium iispalath- patula, 3', Jy. 



oides). pilosa, 2', Je., yel. 



ciuerea, 4', Jy. (*;/. ram- radiata, _!$', Jy. (*.</"- 



osissima of l}iAs). hispanica of gardens,, 

 clavata, 3', Je., grh. Cytisus radiatus, etc.). 

 congesta, 4', Je., grh. ramosissima, 3', Jy.- 

 corsica, 2', Jy., grh. sagittalis, !', Je. (xyii. 

 ferox, H', Jy., grh. herbacea). 

 florida, 6', Jy. Scorpius, ^J', My. 

 germaiiica, 2', Jy. (sijn. sericea, 3', Je. 



Scorpius spmosus). sylvestris, 2', Jy. 



hurrida, 2', Jy., yel. triacanthos, 2', Jy. 

 triquetra, 2', Jy. 

 umbellate, 3', Je., grh. 



GENTIANA. (GENTIAN.) 



Description. Favourite flowers (ord. Geritianete), 



prized for their beautiful colours and effective 

 appearance in the border or the rock garden, which 

 is the most suitable place for the smaller-growing 

 species. 



Propagation. By division, when large enough, 

 in spring, or by seeds sown in pots or pans under 

 glass in spring or when ripe. - 



Soil. The taller species can usually be grown in 

 ordinary soil in the border, but the Alpines, . a 

 a rule, like a moist, peaty soil. 



Other Cultural Points. Acaulis is often trouble- 

 some to grow in some gardens, while in others it 

 thrives perfectly. It likes a gravelly soil, 'trodden 

 hard after planting. Verna should be top-dressed 

 with sand and peat when the leaf-stalks or stems 

 begin to rise above the surface. Almost all like 

 plenty of water in the growing season. 



Principal Species and Varieties : 

 acaulis, 4", Mch., bl. ; cruciata, 1', Je., bl. 



several forms, one wh. lutea, 2' to 4', Jy., yel. : 



Gentiauella. gives the Gentian of 



Andrewsii, 2', Aug., bl. ; commerce : shy flowerer 



distinct, closed flowers. in some gardens. 



Likes a place where its septemh'da, 9", Jy.,-bl. ; 



roots can touch water. beautiful; the var. 



alba, wh. cordifolia is pleasing, 



asclepiadea, 6" to 24", verna, 3", Ap., My.,bl. ; 



Je., Jy., bl. varies slightly. 



alba, wh. alba, wh. ; scarce. 



Other Species : 



alba. 2', Je., wh. (lyn. (estiva, 4", My., bl. (*//. 



ochroleuca of some). angulosa). 



altaica, 1', My., Aug., aurrai, (>", Aug., bl. (syii. 



pur. umbellate). 



(ientian (see ffentiana). 

 (ii '/it lamella (see Gentiana). 



