HYGROPHILA 



445 



HYMENOCALLIS 



temperature is 65 and the dew-point 50, will be 609 ; 

 but when the temperature is 85 and the dew-point 70, 

 the moisture will be represented by 623 ; these numbers 

 being ascertained by tables prepared for the purpose. 

 The difference, however, in such a case is so small, it is 

 not worth taking into account in a horticultural point of 

 view. But as these numbers can only be ascertained 

 by calculation, it is more convenient to reckon by the 

 degrees of dryness, bearing in mind that the dryness of 

 the air is indicated by the difference between the tem- 

 perature of the air and of the dew-point. Thus, if the 

 ring of dew is formed as soon as ether is applied, and 

 only i difference is observable, the air is nearly saturated ; 

 if the difference is 5 to 10 the dryness is very moderate ; 

 while 15 to 20 of difference indicate excessive dryness, 

 and beyond this the air is parching. Card. Chron. 



HYGROPHILA. (From hugros, moist, and phileo, to 

 love ; referring to the habitat of the plant. Nat. ord. 

 Acanthads [Acanthaceae]. Linn. \\-Didynamia, 2-Angio- 

 spermia. Allied to Ruellia.) 



Stove evergreens. Cuttings of young shoots in sandy 

 soil, in heat ; peat and loam. Summer temp., 60 to 80 ; 

 winter, 45 to 55. 

 H. angustifo'lia (narrow- leaved). J-i. Purple or violet. 



Tropics of Old World. 1820. 

 longifo'lia (long-leaved). See H. SPINOSA. 

 ri'ngens (gaping). See H. ANGUSTIFOLIA. 

 solidfo'lta (willow-leaved). See H. ANGUSTIFOLIA. 

 spino'sa (spiny). 2. White or purple. August. 

 India and Malaya. 1781. 



HYLE'SINTJS PINIPERDA. See HYLURGUS PINI- 



PERDA. 



HYLTNE. (From hule, a wood ; the species first dis- 

 covered grew in dry woods. Nat. ord. Amaryllidaceae.) 



A stove bulb. Seeds and offsets. Fibrous loam, leaf- 

 mould, and sand. 

 H. Worsle'yi (Worsley's). i*. White. Brazil. 1899. 



HYLO NOME. (From hule, a wood, and onoma, re- 

 nown ; literally, glory of the woods. Nat. ord. Liliacea?. 

 It is now referred to Behnia.) 

 H. reticula'ta (netted). See BEHNIA RETICULATA. 



HYLOTOMA ROS2E. A saw-fly, which injures rose- 

 trees seriously, by puncturing in rows their young shoots, 

 and depositing its eggs in the holes. The best remedy 

 is spreading a cloth beneath the trees in the evening, 

 and killing the caterpillars shaken down upon it. 



HYLU'RGUS PIOTFE-RDA. Pine Beetle. Young Pine 

 trees in some districts suffer greatly owing to the ravages 

 of this beetle, which is dark-coloured, downy, and about 

 two lines long. The female makes a gallery beneath the 

 bark of young or old trees and lays her eggs in it. Each 

 grub when hatched out makes a tunnel of its own, so 

 that they run round the stems of young trees, which 

 then either die or get their tops blown off by the wind. 

 To keep the beetle in check all prunings and pine bark 

 should be burned. Branches known to be attacked 

 should be cut off and burned likewise. 



HYMENJETA. Locust-tree. (From Humen, the god 

 of marriage ; referring to the leaflets being joined. Nat. 

 ord. Leguminous Plants [Leguminosas]. Linn. lo-De- 

 candria, i-Monogynia. Allied to Bauhinia.) 



Fine, close-grained, hard wood ; and the resins Anime 

 and Copal are produced by these stove evergreen trees. 

 Cuttings of firm young shoots in spring, inserted firmly 

 in sand, covered with a bell-glass, in bottom-heat ; peat 

 and rich loam. Summer temp., 60 to 85 ; winter, 

 55 to 60. 

 H. candollia'na (Decandolle's). 30. White. Acalpulco. 



1824. 

 Cou'rbaril (Courbaril). 40. Yellow, purple. S. Amer. 



1688. " Locust Tree." 



verruca' sa (waity-podded) . 20. White. Madagascar. 

 1808. " Copal." 



HYMENA'NDRA. (From humen, a skin or pellicle, 

 and aner, an anther or male ; the connective of the anther 

 being developed into a thin, connecting membrane. Nat. 

 ord. Myrsinaceae.) 



Evergreen greenhouse shrub allied to Ardisia. Seeds ; 



cuttings of half-mature wood in sand, placed hi a close 



case, with bottom-heat. Fibrous loam, peat, and sand. 



H. Walli'chii (Wallich's). 3-8. Pale greenish-white. 



Himalayas. 1828. 



HYMENANTHE'RA. (From humen, a membrane, and 

 anthera, an anther, or pollen-bag. Nat. ord. Violetwarts 

 [Violaceae]. Linn. $-Pentandria, i-Monogynia. Allied to 

 Alsodeia.) 



Greenhouse evergreen shrubs. Cuttings of young 

 shoots, getting a little firm, in spring, in sand, over peat, 

 and well drained, under a bell-glass ; sandy peat, with 

 a third of fibrous loam. Winter temp., 40 to~45. 

 H. arista' to. (bearded). Garden form. 

 crassifo'lia (thick- leaved). 3. Berries white. New 



Zealand. 1875. 



denta'ta (toothed-leaved). 6. Yellow. May. Australia. 

 angustifo'lia (narrow-leaved). 

 latifo'lia (broad-leaved). Norfolk Island. 



HYMENOCALLIS. (From humen, a membrane, and 

 kalos, beautiful; referring to the membranous cup in- 

 side the flower. Nat. ord. AmaryUids [Amaryllidaceae]. 

 Linn. 6-Hexandria, i-Monogynia. Allied to Pancratium.) 



They have all white flowers, except where otherwise 

 mentioned, and much resemble Pancratiums. Their 

 seeds differ in being large and green, the seeds of Pan- 

 cratium having a black, brittle skin. Offsets ; rich, 

 sandy loam. See AMARY'LLIS. 



HARDY BULBS. 



H. adna'ta (adhering). See H. LITTORALIS. 

 la'cera (torn). i-i. August. Southern United 



States. 1732. 

 littora'lis (sea-shore). i$-2. Segments 4 in. long. 



Trop. Amer. 1758. 

 acutifo'lia (acute- leaved). May. Segments i in. 



longer than the tube. Mexico. 1824. 

 Drya'ndri (Dryander's). 2. Tube and segments 



shorter than the type. May. 1782. 

 Staple'sii (Staples's). 2. Segments 2-3 in. long. 



Mexico. 1826. 

 rota'ta (wheel-shaped). See H. LACERA. 



GREENHOUSE BULBS. 



H. Ama'ncaes (Hill of Amancaes). 2. Large, bright 



yellow. Chili and Peru. 



bistuba'ia (double- tubed), ij. April. Mexico. 1844. 

 calathi'na (cup-like). ii~2. Peru and Bolivia. 1796- 

 ,, grandiflo'ra (large-flowered). Corona larger. 1902. 

 carolinia'na (Carolina). See PANCRATIUM MARITIMUM. 

 ,, conci'nna (neat), ij. Mexico. 1893. Evergreen. 

 ,, galvestone'nsis (Galveston). i-ij. Texas. 

 glau'ca (sea-green), i. July. Mexico. 1837. 

 ,, Itarrisia'nO' (Harrisian). J-i. June. Mexico. 1838. 

 ,, maclea'na (Macleanian). i. Andes of Peru. 1834. 

 Palme'ri (Palmer's), i. Florida. 1888. Larger 



flowers than H. humilis. 



paname'nsis (Panama). See H. LITTORALIS. 

 ,, skinneria'na (Skinner's). March. Guatemala. 1843. 

 tenuiflo'ra (slender-flowered), i. Segments 3-4 in. 



long. Colombia. 1814. 

 vire'scens (greenish). See H. MACLEANA. 



STOVE BULBS. 



H. amcefna (handsome). See H. OVATA. 

 andrea'na (Andrean). i. Ecuador. 1884. 

 ,, angu'sta (narrow-leaved). See H. CARIB^EA. 

 boschia'na (Bpschian). See H. UXDULATA. 

 cariboo. (Caribaean). ij. July. W. Ind. 1730. 

 ,, pa'tens (spreading). White. 

 caymane'nsis (Cayman). August. Cayman. 1823. 

 ,, cordifo'lia (heart-leaved). z\. Venezuela. 1899. 

 crassifo'lia (thick-leaved). i|. July. Southern 



United States. 



defle'xa (deflexed). i. Andes of Peru. 1839. 

 Deleui'lii (Deleuil's). See H. LITTORALIS. 

 eucharidifo'lia (Eucharis-leaved). i. Trop. Amer. 



1884. 



expa'nsa (expanded). 2. May. W. Ind. 1818. 

 ,, fra'grans (fragrant). See H. OVATA. 

 guiane'nsis (Uuiana). See H. TUBIFLORA. 



