AN ENCYCLOPEDIA OF HORTICULTURE. 



97 



GREENOVTA. Now included under Sempervivnm 



(which see). 



GREEN ROSECHAFER. See Rosecfcafer. 



GREENWEED. See Genista tinctoria. 



GREGORIA VITALIANA. A synonym of Andro- 

 sace Vitaliana (which see). 



GREIGIA (named in honour of Major-General Greig, 

 a promoter of Eussian horticulture). OED. Bromeliacece. 

 A genus comprising two species of large-growing herbs, 

 producing a fine crown of Pineapple-like spiny leaves. 

 Greigias are usually described as requiring stove heat, 

 but in summer they may be placed outside the rock garden 

 or warm border, in light, perfectly-drained soil. In the 

 stove, they require treatment similar to Billbergfia (which 

 see). 



FIG. 150. GRBIGIA SPHACELATA. 



G. sphacelate (scorched), fl. rose-coloured, sessile, over! . . 

 each other, and disposed in dense heads ; bracts large, tinged wit 

 green. Summer. I. numerous, erect, sword-shaped, acuminated, 

 fringed with stiff spines, h. 3ft. Chili, 1865. See Fig. 150. 

 (R. G. 1865, 474.) SYN. Billbergia sphacelata. 

 GRENVILLEA. Included under Pelargonium 

 (which see). 



GRE VILLEA (named in honour of C. F. Greville, a 

 patron of botany). Including Anadenia, Lysanthe, Man- 

 glesia, Molloya, Strangea, Stylurus. OED. Proteacece. A 

 large genus (more than 160 species have been described) 

 of beautiful greenhouse shrubs or trees, limited, with the 

 exception of seven New Caledonian species, to Australia. 

 Flowers in pairs along the rachis of a short and umbel- 

 like or elongated raceme, rarely reduced to a single pair ; 

 racemes either terminal or also axillary, rarely all axillary. 

 Grevilleas thrive with ordinary greenhouse treatment. 

 They should be repotted after the flowering season. For 

 general culture and propagation, see Cytisus. 

 G. acanthifolia (Acanthus-leaved).* fl. reddish, densely disposed 

 in racemes 3in. or 4in. long ; styles (as in the other species) long, 

 filiform, considerably exceeding the perianth in length. June. 

 I. rigid, divided nearly to the centre ; lower divisions coarsely 

 toothed ; very suggestive of Acanthus foliage, h. 4ft. 1824. 

 (B. M. 2807.) 



Grevillea continued. 

 G. alpestrls (rock). A synonym of 0. alpina. 

 G. alpina (alpine).*, fl. red, yellow ; racemes very short, terminal, 

 sessile ; pedicels pubescent. May. /. rather crowded, sessile or 

 nearly so, oval, oblong-lanceolate or almost linear, obtuse or 

 with a small point, sometimes attaining lin., hirsute or rarely 

 scabrous only above, silky-villous beneath ; margins revolute. 

 h. 4ft. A much-branched, erect, spreading, or diffuse shrub. 

 SYN. G. alpestris. (B. M. 5007.) 



G. arenaria (sand-loving), fl., racemes short, terminal, umbel- 

 like, few-flowered, mostly renexed. I. shortly petiolate, obovate- 

 oblong to narrow-oblong, obtuse, with a very small point ; 

 margins recurved, minutely hoary -tomentose, and scarcely veined 

 on the upper side, densely tomentose, and often ferruginous 

 underneath. Branches densely tomentose. A. 6ft. An erect 

 shrub. SYN. Lysanthe cana. (B. M. 3285.) 



G. a. canescens (hoary). This closely resembles the type, with 

 the exception that the perianth is more villoua, and the points to 

 the laminae longer. SYN. G. canescens. (B. M. 3185.) 

 G. aspera linearis (rough, linear). A synonym of G. fasciculata. 

 G. asplenifolia (Asplenium-leaved) fl. pink; 

 racemes sessile or shortly pedunculate, terminal, 

 or in the upper axils, secund, lin. to 2in. long. 

 July. 1. lanceolate or linear-lanceolate, mucro- 

 nate-acute, entire, acutely toothed or pinnatifld, 

 with short broad acute lobes, contracted into a 

 short petiole. Branches minutely silky-pubescent 

 when very young, h. 12ft to 15ft 1806. A tall 

 shrub or small slender tree. SYN. G. hnffifolia. 

 G. Banksii (Banks').* fl. red, in dense terminal 

 racemes. August. I. 4in. to Sin. long, deeply 

 pinnatifld ; segments broadly-linear, decurrent, 

 whitish. A. 15ft. 1868. (B. M. 5870.) 

 G. blecnnifolia (Blechnum-leaved). A synonym 



of G. Caleyi. 



G. Caleyi (Caley's). fl. red ; racemes terminal, or 

 in the upper axils, erect, rather dense, secund, 

 shortly pedunculate, l^in. to 2in. long. June. 

 I. deeply pinnatifld or pinnate, with numerous 

 oblong-linear divaricate segments, obtuse or mu- 

 cronate, with recurved margins, glabrous above, 

 softly villous beneath. Branches densely villous, 

 with soft spreading ferruginous hairs, h. 5ft. to 

 6ft 1830. A slender shrub. SYN. G. blechni- 

 folia. (B. M. 3133.) 

 G. canescens (hoary). A synonym of G. arenaria 



canescens. 



G. Drummondii (Drummond's). ft, white, 

 yellow ; racemes umbel-like, sessile, terminal, or 

 on very short axillary tufts. June. I. sessile, 

 rather crowded, oblong, lanceolate, or linear, 

 obtuse or mucronate; margins recurved. Stems 

 apparently diffuse or procumbent. Branches 

 tomentose and hirsute with long fine-spreading 

 hairs. 1859. 



G. dubia (doubtful). A synonym of G. sericea. 

 G. ericifolia (Heath-leaved), fl. bright red in 

 the lower part, upper greenish-yellow ; racemes 

 terminal, short, but rather loose, and often 

 shortly pedunculate, quite glabrous. Winter. I. 

 sessile, linear or lanceolate, mucronate - acute, 

 with revolute margins. Branches pubescent or 

 tomentose-villous. A low, spreading, or diffuse 

 shrub. (B. M. 6361.) 



G. fasciculate (fascicled).* fl. bright red, with yellow tips ; 

 racemes umbel-like, few-flowered, sessile, axillary or terminal. 

 Spring. I sessile or very shortly petiolate, linear-lanceolate, 

 or lower ones oblong-elliptical, obtuse or with a callous point ; 

 margins revolute. A low, prostrate shrub in the typical form, 

 but sometimes attaining 3ft. or 4ft. in height 1873. SYN. 

 G. aspera linearis. (B. M. 6105.) 



G. glabrata (smooth), fl. white ; racemes axillary, the upper 

 ones f orming a terminal panicle ; rachis slender. May. I. 

 broadly cuneate, shortly and broadly three-lobed ; lobes acute, 

 with fine pungent points, contracted into a petiole, flat, with 

 prominent primary veins, h. 5ft. to 6ft. An erect, quite gla- 

 brous shrub. 1838. SYNS. Anadenia Manglesii and Manglesia 

 glabrata. 



G. Intricate (entangled), fl. white ; racemes slender, peduncu- 

 late, lin. to 2in. long, and sometimes branched, terminal or 

 lateral. May. 1. long and slender, once, twice, or three tunes 

 ternately divided into linear-subulate, almost terete, rigid, acute 

 segments, singly or doubly grooved, often above lin. long, on a 

 common petiole. Branches slender, glabrous, h. 2ft. to 3ft. 

 1871. (B. M. 5919.) 



G. Juniperina (Juniper-like), fl. pale yellow and green, more 

 or less tinged with red ; racemes short, almost umbellate, sessile, 

 terminal. May. I. linear, rigid, sharp-pointed. An erect or 

 spreading bushy shrub. (L. B. C. 1003 ; B. R. 1089.) 

 G. J. sulphurea (sulphur-coloured). This plant is, according to 

 Bentham, only a variety of G. Juniperina, from which its differs in 

 the perianth being without any, or scarcely any, red tint. SYN. 

 G. sulphurea. (L. B. C. 1723.) This is one of the hardiest of all 







