GREEN MANURE 



401 



GREVILLEA 



After-treatment of Cuttings and Seedlings. This is 

 almost identical. Neither cuttings nor seedlings, if at 

 all thick, will thrive long in the cutting and seedling 

 pot. The sooner they are potted off the better they will 

 thrive. Before that, air must be given to prevent them 

 damping ; first at night ; next, night, morning, and 

 evening ; and lastly, when roots are well formed, during 

 the day, removing the glasses altogether from the 

 cuttings. All this time the little moisture necessary 

 must be carefully given. The less it touches either the 

 stems or leaves, the better. When a little advanced, 

 dust them overhead with a fine rose watering-pot, or a 

 syringe, but be careful to have the foliage dry before 

 shutting up for the night. In potting off tender plants 

 that are very small, three or four may be put round the 

 sides of a four-inch pot ; a strong-growing one into such 

 a pot at once. In every such potting, and every time 

 that re-shifting is necessary, a moist, close atmosphere is 

 of importance for a short time afterwards ; thus lessening, 

 by means of shading and syringing, the evaporating 

 processes until the roots have begun to work in the 

 new soil, when air must be given, first gradually, and 

 ultimately plentifully. 



GREEN MANURE is a mass of recently growing plants 

 dug whilst green and fresh into the soil, for the purpose 

 of enriching it ; and it is a rule without any exception 

 that all fresh vegetable matters so turned into the earth 

 do render it more fertile ; and if plants are grown upon 

 the soil for this purpose, the greater the amount of the 

 surface of leaves in proportion to that of roots the better, 

 because such plants obtain a large proportion of their 

 chief constituent the chief constituent of all plants, 

 carbon from the atmosphere. They therefore return to 

 the soil more decomposing matter than they have taken 

 from it. 



The putrefaction of the vegetables, and the gases in 

 that case emitted, says Mr. Cuthbert Johnson, appear to 

 be on all occasions highly invigorating and nourishing to 

 the succeeding crop. During this operation, the presence 

 of water is essentially necessary, and is most probably 

 decomposed. The gases produced vary in different 

 plants ; those which contain gluten emit ammonia ; 

 onions and a few others evolve phosphorus ; hydrogen, 

 carbonic acid gas, and carburetted hydrogen gas, with 

 various vegetable matters, are almost always abundantly 

 formed. All these gases, when mixed with the soil, are 

 very nourishing to the plants growing upon it. The 

 observations of the farmer assure us that they are so. 

 He tells us that all green manures cannot be employed 

 in too fresh a state. 



Sea Weed is a species of green manure, for it ought to 

 be employed whilst quite fresh. There are many species, 

 and they differ very essentially in their components. 

 The Lamina'ria, those long, tawny-green, ribbon-like 

 algae, so common on our coasts, contain, besides vegetable 

 matter, a large proportion of the salts of potash in addi- 

 tion to those of soda ; whereas the Fu'ci contain none of 

 the salts of potash. All, however, are excellent manures ; 

 and we know a garden, near Southampton, very pro- 

 ductive, that for some years had no other manure. It 

 is particularly good as a manure for potatoes. The 

 Fu'cus vesiculo'sus, so distinguishable by the bladders 

 full of air embedded in its stems, is a very excellent 

 manure. It contains, when dry, about eighty-four parts 

 vegetable matter, thirteen parts sulphate of lime and 

 magnesia, with a little phosphate of lime, and three 

 parts sulphate and muriate of soda. 



GREEHWEED. Geni'sta pilo'sa and tincto'ria. 



GRETGIA. (Commemorative of Major-General Greig, 

 a patron of horticulture in Russia. Nat. ord. Brome- 

 liaceae.) 



Stove evergreen herb. Offsets or suckers. Fibrous 

 loam, peat, some pieces of charcoal and sand. 

 G. spkacela'ta (scorched), i-ij. Brownish-red. Chili. 

 1865. 



GKENVTLLEA CONSPI'CUA. This is Pelargo'nium 

 conspi'cuum. 



GREVTLLEA. (Named after C. F. Greville, a patron 

 of botany. Nat. ord. Proteads [Proteaceae]. Linn. 4- 

 Tetrandria, i-Monogynia. Allied to Hakea.) 



Greenhouse evergreen shrubs, from Australia. Seeds 

 sown in a slight hotbed, in spring, or in the greenhouse, 



as soon as ripe ; cuttings of the young shoots when 

 ripened, hi sand, under a bell-glass, and when callused at 

 the base to have a slight bottom-heat ; peat and loam, 

 with silver sand and bits of charcoal, to keep the soil 

 open. Winter temp., 33 to 45. Rosmarinifo'lia and 

 acumina'ta have stood out in sheltered places, with little 

 or no protection. 



G. acanthifo'lia (Acanthus-leaved). 4. Purple. June. 

 1824. 



acumina'ta (pointed-leaved). See G. MUCRONULATA. 



alpe'stris (alpine). See G. ALPINA. 



alpi'na (alpine). 4. Red, yellow. May. 



anethifo'lia (dill-leaved). Australia. 



Aquifo'lium (holly- leaved). 1820. 



, arena'ria (sand). 5. Green, tawny. 1824. 



, a'spera (rough). 3. Pink. June. 1824. 



, asplenifo'lia (Asplenium-leaved). 5. Pink. July. 

 1806. 



, Ba'nksii (Banks's). 12-15. Red. 1868. 



, Baue'ri (Bauer's). 4. Red. June. 1824. 



, berberifo'lia (bar berry-leaved). 4. Red. June. 1821. 



bipinnati' fida (doubly-leafleted). 1837. 



,, brachya'ntha (short-flowered). See G. QUERCIFOLIA. 



buxifo'lia (box-leaved). 6. Pink. June. 1790. 



Cale'yi (Caley's). 5. Red. June. 1830. 



cane'scens (hoaiy-leaved). See G. ARENARIA. 



ceratophy'tta (horn-leaved). See G. REFRACTA CERATO- 



PHYLLA. 



Chrysode'ndrum (ye How- tree). Yellow. 



cinJrea (ashy-coloured). 4. Red. June 1822. 



colli'na (hill). See G. BUXIFOLIA. 



conci'nna (neat). 4. Purple. June. 1824. 



Drummo'ndii (Drummond's). 3. White, yellow. 



June. 1859. 



du'bia (dubious). See G. SERICEA. 

 e'legans (elegant). Red, yellow. 1859. 

 ericifo'lia (heath- leaved). Red, green. 

 ,, eriosta'chya (woolly-spiked). Orange. 

 falca'ta (sickle-shaped). Gardens. Spring. 1873. 

 ,, fascicuia'ta (fascicled). Pale red. 

 ferrugi'nea (rusty). See G. FLORIBUNDA. 

 Flinde'rsii (Flinder's). 3. Purple. June. N. S. 



Wales. 1824. 



fioribu'nda (free-flowering). 3. 1837. 

 Forste'ri (Forster's). Scarlet. 1873. 

 gibbo'sa (pollen-stemmed). 1821. 

 Gillivra'yi (Gillivray's). 4. White. June. New 



Caledonia. 1854. 

 glabra'ta (glabrous). 3-5. White or yellow. April, 



May. 1836. 



heterophy'Ua (variable-leaved). See G. REFRACTA. 

 hUlia'na (Hillian). 1862. 

 hopkeria'na (Hookerian). Yellow, crimson. 

 ,, ilicifo'lia (holly-leaved). Australia. 

 intrica'ta (intricate). 5. White. May. 1871. 

 juniperi'na (juniper-like). 4. Pink. June. 1822. 

 sulphu'rea (sulphur). 4. Pale yellow. June. 



1824. 



lavandula'cea (lavender-like). Pink. June. 1850. 

 ,, lawrencea'na (Mrs. Lawrence's). White. 1839. 

 linea'ris (nznow-leaved). 6. White. June. 1790. 

 a'lba (white-flowered). 4. White. June. 1790. 

 incarna'ta (flesh-coloured). 4. Flesh. June. 



1790. 



longifo'lia (long-leaved). See G. ASPLENIFOLIA. 

 macro'stylis (long-styled). Crimson and yellow. 



April. 1868. 



Mangle'sii (Mangles'). See G. GLABRATA. 

 monta'na (mountain). 4. Violet. June. 1822. 

 mucronifo'lia (pointed-leaved). 3. Violet. June. 



1824. 

 mucronula'ta (small-pom ted-leaved). 4. Pink. June. 



1809. 



occidenta'lis (western). Australia. 

 planifo'lia (flat-leaved). See G. SERICEA. 

 Prei'ssei (Preiss's). See G. THELEMANNIANA. 

 pube'scens (downy). 1826. 

 pulche'lla (pretty). 2. White or yellow. Australia. 



1824. 



, puni'cea (scarlet). Purple. June. 1822. 

 , quercifo'lia (oak-leaved). Purple. 

 , refra'cta (bent-back). 4. White. June. 1821. 



,, ceratophy'tta (horn-leaved). 1839. 

 , robu'sta (robust, or silk-oak). 5. Orange. June. 



1829. 



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