AN ENCYCLOPEDIA OF HORTICULTURE. 



61 



Gentiana continued. 



inyolucrate cluster ; corolla lin. or more long ; calyx lobes shorter 



than the tube. Summer. I. linear or narrowly lanceolate. Stem 



slender, 1ft. to 2ft. high. North America. SYN. G. Pseudo- 



pneumonanthe. 



G. lutca (yellow).* fl. verticillate, sub-cymose ; corolla yellow, 

 veiny, and spotted, rotate, five or six-cleft. July. I. broad, 

 ovate ; radical leaves ovate-oblong ; cauline ones sessile, ovate, 

 acute, h. 4ft. to 6ft. Europe, 1596. This species furnishes the 

 Gentian root of commerce. 



G. macrophylla (large-leaved). JL terminal, verticillately ag- 

 gregate, involucrated by usually four floral leaves ; corolla 

 pale blue, small, tubularly campanulate, four or five-cleft, with 

 short acutish segments. July. L radical ones lanceolate, length 

 of stem. Stems nearly terete, almost naked in the middle, h. 

 6in. to 12in. Siberia, 1796. (B. M. 1414.) 



G. ochroleuca (yellowish-white), fl. blue, terminal, aggregate ; 

 olla ventricose, five-fid. I. obovate- 

 United States, 1820. SYN. G. inter- 



, . , 



calyx foliaceous, unequal ; corolla ventricose, five- 

 oblong, three-nerved, h. 6i 



media. (B. M. 2303.) 

 G. ornata (adorned).* fl. solitary and sessile at the ends of the 

 branches ; corolla tube whitish, striped with blue, sub-cylindric, 

 a little inflated; lobes intensely blue, five, small, triangular- 

 ovate, acute. May. I. ovate-lanceolate or linear-lanceolate, 

 acute, acuminate or obtuse, deep green, with a pale midrib. 

 Himalayas. (B. M. 6514.) 



. pannonica (Pannonian). /. verticillate, axillary, and ter- 

 minal ; corolla purple, beset with dots, campanulate, six or seven- 

 cleft, rather membranous ; tube yellowish. July. I., radical ones 

 ovate, apiculate ; cauline ones ovate, lanceolate ; floral ones 



acuminated. Stem obsoletely tetragonal, 

 of Europe. 



h. 1ft. to 2ft. Alps 



FIG. 94. GENTIANA PNEUMONANTHE, showing Habit and detached 

 Single Flower. 



G. Pneumonanthe.* Wind Flower, ft. terminal and axillary, 

 pedunculate ; corolla deep blue, having the accessory segments 

 small and green, funnel-shaped, five-cleft. August. I. Imear- 

 spathulate, obtuse. Stems simple, tetragonal, h. 6in. to 12m. 

 Northern hemisphere (Britain). See Fig. 94. There are white 

 and other varieties of this species. 



G. Pseudo-pneumonanthe (bastard Wind Flower). A synonym 

 of G. linearis. 



Q. punctata (dotted).* fl. verticillate ; corolla yellow, dotted 

 with numerous irregular purple spots, campanulate, six to .eignt- 

 cleft, large. June. 1. ovate, acutish ; lower ones petiolate, 

 superior ones acuminated. Stem sub-tetragonal, h. 1ft. to <ift. 

 European Alps, 1775. 



G. purpurea (purple), fl. from three to eight together, terminal, 

 the axillary ones usually solitary; corolla purplish, marked with 

 dots in lines inside, coriaceous, campanulate ; tube striated witn 

 greenish-yellow. June, July. I., radical ones ovate ; cauline ones 

 ovate-lanceolate; upper ones broad-lanceolate, combined and 

 sheathing at the base. Stem obsoletely tetragonal, h. 1ft. to 

 2ft. Europe, 1768. 



G. pyrenaica (Pyrenean).* fl. terminating the branches, solitary ; 

 corolla pale green outside, with the limb deep blue above, funnel- 



Gentiana continued. 



ten-cleft ; the accessory segments oblong, obtuse, and 

 crenulated at the apex. April. L lanceolate-linear; radical 

 ones crowded, imbricate; cauline connately sheathing, acute. 

 Stem procumbent, branched at bottom, h. Sin. Pyrenees, 1825. 

 (B. M. 5742.) 



G. quinquenora (five-flowered). fl. lilac, clustered at ends of 

 stem and branches, three to five together ; corolla clavate, five- 

 fid ; calyx very short, acute. October. I. amplexicaul, deltoid- 

 cordate, three to five-nerved, h. lift. North America, 1834. 

 (B. M. 3496.) 



FIG. 95. GENTIANA SEPTEMPIDA. 



G septemflda (seven-fid).* /. terminal, one to seven in a cluster ; 

 corolla azure-blue, having the tube almost cylindrical, widening 

 upwards, ten-cleft ; five accessory segments jagged. June, July. 

 I. ovate-lanceolate, obtuse, approximate. Stems tetragonal, erect, 

 simple, h. 6in. to 18in. Persia, 1804. See Fig. 95. (B.M.1229.) 

 G. 8. cordifolia (heart-shape-leaved). /. numerous, in a compact 

 rather elongate head, sessile, or very shortly pedicellate ; corolla 

 dark blue, clavate ; lobes five, small, ovate, sub-acute. June, 

 July I all ovate-cordate, sub-acute, five-nerved, dark green 

 above, spreading or deflexed, coriaceous, the upper often fing 

 a sort o? involucre. Asia Minor. This plant is often cultivated 

 under the name of G. gelida. (B. M. 6497.) 



G. verna (green).* fl. solitary ; corolla azure-blue, salver-shaped, 

 five-cleft, with as many small bifid accessory segments. April, 

 May. J. ovate, acutish ; radical ones spreading, crowded. Stem 

 branched at bottom, h. Sin. England (B. rf. 491.) There are 

 several varieties of this species, including brachyphylla (leaves 

 lanceolate, roundish, very short) and elongata (stem elongated, 

 filiform, nearly naked). 



GENTIANE2E. A large order of annual or peren- 

 nial herbs, rarely shrubs. Flowers red, yellow, bine, white, 

 or violet, showy, regular ; calyx divided, persistent ; corolla 

 persistent, imbricate or indnplicate, and often twisted in 

 sestivation ; stamens alternate with the lobes of the 

 corolla. The leaves (alternate and trifoliolate in Meny- 

 anthes) are nearly always opposite (rarely whorled), entire, 

 exstipulate, usually ribbed. There are about forty-nine 

 genera, and 520 species, broadly dispersed through almost 

 all parts of the world ; some are found at high elevations, 

 and others in hot tropical plains. Bitterness characterises 

 the whole order. Illustrative genera are : Cnironia, 

 Chlora, Erythraea, Gentiana, Limnanthemum, Lisianthus, 

 Menyanthes, and Villarsia. 



GENTIANELLA. See Gentiana acaulis. 

 GEODOB.T7M (from ge, the earth, and doron, & gift). 

 ORD. Orchidece. A small genus of stove terrestrial 

 orchids, natives of East India. Scapes terminating in 

 a nodding spike of flowers, which in some are of a pale 

 green colour, the lip white, veined with purple or 

 yellow lines; and in others blush, with a yellow spot 

 on the lip. Leaves radical, lance-shaped or elliptical. 

 Eoots tuberous. The species thrive in fibrous peat, in 

 a hot, damp stove, but require to be rested after the 

 leaves have withered. 



G citrintun (lemon-coloured), fl. yellow, close ; spike pen- 

 au^ousTliprsomewhat spurred at base, blunt and entire at end ; 

 rape shorter than leaves. October -to December. I. lanceolate. 

 A. fit. East Indies, 1800. (B. M. 2195.) 



G dilatatum (swollen). A. whitish flesh-colour, crowded ; sub- 

 laScIm^nulate, nodding; racemes many-flowered , sparsely 

 imbricate. Summer. 1. 6in. long, 3m. to 4m. broad, erect. 



