HUDSONIA 



440 



HUMUS 



H. longifo'lia Shephe'rdi (Shepherd's). Pale flesh. 



Sikkim. 1861. 

 ,, multifto'ra (many-flowered). Pale yellow-white. July. 



Malaya. 1839. 

 obtusifo'lia (blunt-leaved). India and Malaya. 



(B. M., t. 4969.) 



orbicula'ta (orbicular). See H. DIVERSIFOLIA. 

 ovcdifo'lia (oval-leaved). Pinkish- yellow. July. E. 



Ind. 1840. 



pa'llida (pale). See H. PARASITICA. 

 parasi'tica (parasitical). 6. White or yellow. July. 



Malaya. 1815. 



Paxto'ni (Paxton's). See H. BELLA. 

 pi'cta (painted). See H. CARNOSA. 

 Po'ttsii (Pots's). 10. Yellow. China. 1824. 

 , purpu'reo-fu'sca (purple-brown). Brown and purple. 



September. Java. 1849. 

 Shephe'rdi (Shepherd's). See H. LONGIFOLIA SHEP- 



HERDI. 



trine'rvis (three-nerved). See H. POTTSII. 



variega'ta (variegated). See H. CARNOSA FOLIIS 



VARIEGATIS. 



HUDSO'NIA. (Named after W. Hudson, F.R.S., 

 author of the Flora Anglica. Nat. ord. Rock-roses 

 [Cistaceae]. Linn. \\-Dodecandria, i-Monogynia. Allied 

 to Helianthemum.) 



Half-hardy evergreens, from North America, with 

 yellow flowers. Generally by layers in spring and 

 autumn, and cuttings in sand, during summer, under a 

 hand-light; sandy peat, and a moist situation. They 

 require a little protection in winter, and may be placed 

 in a pit. Unlike any other group of the order, the foliage 

 more resembles a Heath than a Cistus. 

 H. ericoi'dcs (heath-like), i. June. 1805. 



Nutta'Uii (Nuttall's). See H. ERICOIDES. 



iomento'sa (downy), i. May. 1826. 



HUEGEXIA DENSIFO'LIA and H. ELONGA'TA are 



Gilia densifolia. 



HUEGEXIA LU'TEA is Gilia lutescens. 

 HUEGEXIA VIRGA'TA. See GILIA VIRGATA. 



HUE'RNIA. (Named after /. Huernius, a collector of 

 Cape plants. Nat. ord. Asclepiads [Asclepiadaceae]. 

 T.jnn. s-Pentandria, 2-Digynia. Allied to Stapelia.) 



Greenhouse evergreen succulents, from South Africa, 

 except where otherwise mentioned. Cuttings in spring, 

 well dried before inserting, or dividing the plant after 

 flowering ; sandy loam, and a little peat, leaf-mould, and 

 lime-rubbish ; plenty of water when growing and flower- 

 ing, but dry, or nearly so, during the winter. Summer 

 temp., 60 to 85 ; winter, 45 to 50. 

 H. appendicula'ta (appendaged). Nearly white. S. 



Africa (?). 1910. 

 a'spera (rough). . Zanzibar. 

 barba' to. (bearded). J. White-striped. August. 1795. 

 breviro'stris (short-beaked), . Pale yellow, with 



blood-red spots. 1877. 



davi'gera (club-bearing). . Yellow-striped. Sep- 

 tember. 1795. 

 conci'nna (neat). J. Greenish-yellow, red spots. 



Abyssinia. 1895. 

 cri'spa (curled). 



gutta'ta (spotted). S. Africa. 

 hu'tmlis (humble). J. Yell 



1795- 



Yellow-striped. September. 



Hy'sirix (hedgehog). J. Dusky yellow, crimson. 



June to September. 1868. 



lentigino'sa (freckled). . Yellow-striped. 1795. 

 macroca'rpa (large-fruited) of Damman. See H. 



PENZIGII. 

 macroca'rpa, (large-fruited) of Gartenflora, t. 1416. 



See H. CONCINNA. 



ocellz'la (eyed). J. Yellow-striped. September. 

 ocula'ta (eyed). |. Blackish-purple, with basal eye- 

 spot. Damaraland. 

 Penzi'gii (Penzig's). J. Black-purple. Abyssinia. 



1892. 

 Pillafnsii (Pillans's). <&. Pale yellow, with crimson 



specks. 1904. 

 primuii'na (primrose-coloured). Pale primrose. S. 



Africa. 

 reticula'ta (netted). . Pink-striped. August. 1793. 



H. soma'lica (Somaliland). Brown-purple, with yellow 



spots. Somaliland. 1898. 



Sprenge'ri (Sprenger's). See CARALLUMA SPRENGERI. 

 ,, tuba'ta (tubed). Flesh, spotted with pink. 

 ,, venu'sta (lovely), . Yellow-striped. June. 1795. 



HUERNIO'PSIS. (From Huernia, and opsis, resem- 

 blance. Nat. ord. Asclepiadaceae.) 



A dry stove or warm greenhouse succulent. Cuttings 

 laid on a dry, warm shelf for ten days or so to dry, and 

 inserted in sand on a sunny bench. Loam, nnely 

 broken bricks and sand in equal proportions. 

 H. deci'piens (deceiving). \. Crimson-brown, yellow. 

 S. Africa. 1877. 



HUMA'TA. (Probably from humatus, interred ; the 

 stems being deep in the earth. Nat. ord. Ferns [Filices]. 

 Linn. n-Cryptogamia, i-Filices. A section of Davallia, 

 to which they are now referred.) 



Stove Ferns, with brownish-yellow spores. Division ; 

 peat and loam. See FERNS. 

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



heterophy'tta (various-leaved). April. Samaria. 



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



peda'ta (double-lobed). May. E. Ind. 



,, Tyerma'nii (Tyerman's). West Coast of Africa. 1871. 



HUMBLE BEE. Various species of Bombus, of which 

 B. terre'sier and B. luco'rum are common. They serve 

 to fertilise the flowers of very numerous species of plants, 

 when visiting them for the sake of nectar or pollen. 

 They often pierce the base of long-tubed flowers, when 

 they cannot readily get at the nectar by the interior of 

 the tube in the natural way ; but hive bees (Apis 

 mellifica) are equally guilty of doing this on occasion. 



HUMBLE PLANT. Mimo'sa pu'dica. 



HU'MEA. (Named after Lady Hume. Nat. ord. Com- 

 posites [Composite]. Linn. ig-Syngenesia, i-jEqualis.) 



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. N. S. Wales. 



1800. 



gigante'a (giant). 10-20. Panicles of flowers 

 larger. 1909. 



HU'MULUS. The Hop. (From humus, the ground ; 

 creeping on the ground if not supported. Nat. ord. 

 Hempworts [Urticaceae]. Linn. 22-Dixcia, s-Pentan- 

 dria.) 



Hardy perennial twiners. Seeds and divisions in 

 spring ; deep, loamy soil. They are useful for summer 

 shade, as they grow very quick. 

 H. japo'nicus (Japanese). 12-25. Yellow-green. July, 



August. Japan. 1885. Annual. 

 lute'scens (yellowish). Leaves tinted with bronze 



or gold. 1895. 

 ,, variegaftus (variegated). Leaves variegated with 



creamy-yellow. 1889. 

 Lu'pulus (common. Hop). 15-25. Yellow. July. 



Britain. 



variega'tus (striped-teal^). 15. Yellow. July 

 Britain. 



HU'MUS. When the putrefaction of dead plants is 

 completed, there remains a soft, black mass, known as 

 vegetable mould, or humus. One hundred 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 car- 

 bonaceous matter. This apotheme is identical with the 

 humic acid of Liebig, the ulmic acid of Braconnot, and 

 the geic acid of Berzelius. It contains carbon, 46.6 ; 

 hydrogen, 20.0 ; oxygen, 33.4. It was once believed, 

 indeed, is still believed by a few men of science, that this 

 apotheme is the immediate fertilising component of 

 organic manures, being soluble under some circumstances, 

 and entering at once into the roots of plants, dissolved 

 in the moisture of the soil. But every relative research 

 of more modern chemistry is against this conclusion ; 

 and it is now tolerably certain, that a chief nutritive 



