Htici 



[ UMJ ] 



HL'S 



H, tu'tea (yellow). . Yellow. June. 1833. | 



virga'ta (twiggy). . Blue, June. 1833.1 

 HUMA'TA. (Probably from humatus, 



interred ; the stems being deep in the j 

 earth. Nat. ord., Polypods [Polypo- 

 diacese]. Linn., 2-L-Cryptoyamia 1- 

 Fttices.) 



Stove ferns, with brownish yellow spores. 

 Division ; peat and loam. See Ferns. 

 H. angusta'ta (narrow). April. Singapore. 



heterophy'lla (various-leaved). April. Sa- 



maria. 



pectina'ta (comb-like). April. Isle of Luzon. 

 pedu'ta (doubly-lobed). May. East Indies. 



HUMBLE PLANT. Mimo'sa pu'dica. 



HU'MEA. (Named after Lady Hume. 

 Nat. ord., Composites [Asteracese]. 

 Linn., 19-Syngenesia I-^qualis.) 



Greenhouse biennial. Sow in heat, in spring ; 

 prick out and grow under glass ; place out of 

 doors in the heat of the summer ; house in good 

 time in the! autumn ; shift into larger pots as 

 wanted, and transfer to its blooming pots in 

 April, or plant out in good rich soil in May. 

 Single plants in a sheltered corner have a fine 

 effect. 



H. e'legans (elegant). 6. Red. July. New 

 South Wales. 1800. 



HU'MULUS. The Hop. (From humus, 

 the ground ; creeping on the ground if 

 not supported. Nat. ord., Hempworts 

 [Cannabinaceae]. Linn., 22-Di(ccia 5- 

 Pcntandria.) 



Hardy perennial twiner. Seeds and divisions 

 in spring ; deep loamy soil. It is useful for 

 summer shade, as it grows very quick. 

 H. lu'pulus (common. Hop). 15. Yellow. 

 July. Britain. 



variega'tus (striped- leaved}. 15. 



Yellow. July. Britain. 



HUMUS. When the putrefaction of 

 dead plants is completed, there re- 

 mains a soft black mass, known as 

 vegetable mould, or humus. One hun- 

 dred parts of the humus of wheat 

 straw have of extractive or apotheme, 

 rather more than twenty-six parts, and 

 the residue is lime, peroxide of iron, 

 phosphate of lime, and carbonaceous 

 matter. This apotheme is identical 

 with the humic acid of Liebig, the 

 ulmic acid of Braconnot, and the geic 

 acid of Berzelius. It contains car- 

 bon, 46.6 ; hydrogen, 20.0 ; oxygen ; 

 33.4=. It was once believed, indeed, is 

 still believed by a few men of science, j 

 that this apotheme is the immediate 

 fertilizing component of organic ma- 

 nures, being soluble under some cir- 



cumstances, and entering at once into 

 the roots of plants, dissolved in the 

 moisture of the soil. But every re 

 lative research of more modern che- 

 mistry is against this conclusion, and it 

 is now tolerably certain, that a chief 

 nutritive portion of vegetable manures 

 is their carbon converted into car- 

 bonic acid, absorbed either in solu- 

 tion with the earth's moisture, or in 

 gaseous form by the roots. 



HUNGARIAN LOTUS. Nymphte'a thcr- 

 ma'lis. 



HUNNEMA'NNIA. (Named after J. 

 ffunnemann, a botanical agent. Nat. 

 ord., Poppyworts [Papaveracese]. Linn., 

 l-l-Polyandria, 1 -Monogynia.} 



Greenhouse herbaceous perennial. Seeds in 

 spring ; rich soil ; will bloom the second year 

 in greenhouse treatment, or may be kept over 

 the winter in a dry, cold pit. 

 H./ianfz?/o7ta(Fumaria-leaved). 2. Yellow. 

 Mexico. 1827. 



HUNTLE'YA. (Named after the Rev. 

 Mr. Hunlley^ a zealous collector of 

 plants. Nat. ord.. Orchids [Orchida- 

 cese]. Linn., '20-Gynandria l-Monan- 

 dria. Allied to Zygopetalum.) 



Stove orchids. Slips of shoots, and dividing 

 the plant ; fibry peat, &c. ; grown in a high 

 moist temperature. Summer temp., 60 to 90 ; 

 winter, 65to60. 



H. melea'gris (Guinea-hen). 1. Yellow, brown. 

 July. South America. 1836. 



sessiliflo'ra (stalkless - flowered). Violet. 



June. Guiana. 1835. 



viola'cea (violet-coloured). Violet. June. 



Guiana. 1837. 



HU'RA. Sand-box-tree. (The native 

 name. Nat. ord., Spnrgeworts [Euphor- 

 biaceo 1 ]. Linn., '2\-3foncecia 11-Mona- 

 delphia. Allied to Hippomane.) 



Stove evergreen trees, with whitish yellow 

 flotrers. Seeds, and cuttings of ripe young 

 shoots, under a bell-glass, in sandy soil, and in 

 heat; rich loam and peat. Summer temp., 60 

 to 80 ; winter, 50 to 55. 

 H. crepi'tans (rattling ; equal - toothed}. 12, 

 South America. 1/33. 



stre'pens (sounding ; unequal-toothed}, 12. 



South America. 



HURDLES of iron are the most eligible 

 modes of fencing, whether for perma- 

 nency or temporary purposes. They 

 are invisible at a short distance, elegant, 

 and durable. See Ha i liny. 



HUSKY. The dung for a hotbed 

 when too dry is said to be husky. 



