IRISH HEATH 



462 



ISMENE 



/. tecto'rum ca'ndida (white). White. Central China. 



1901. 



,, lilaci'na (lilac). Lilac. 1908. 

 Tali'schi (Talisch's). i. Flowers 20-30, pale 



yellow. Persia. 1901. 



,, te'nax (tough). Purple. July. California. 1826. 

 ienuifo'lia( thin-leaved), i. Lilac-blue. May. Central 



Asia. 1796. 

 te'nuis (slender), i. White, marked yellow and 



purple. Oregon. 1888. 



tigri'na (tiger-striped). See I. KUMAONENSIS. 

 ,, tolmiea'na (Tolmiean). See I. MISSOURIENSIS. 

 tomiolo'pha (cut-crested). See I. TECTORUM. 

 tridenta'ta (three-toothed). ij. Blue. May. N. 



Amer. 1820. 



,, triflo'ra (three-flowered). See I. ENSATA. 

 tripe'tala ( three- petaled). See I. TRIDENTATA. 

 tri'stis (sad). See MOR^A TRISTIS. 

 troja'na (Troy). 3. Purple-violet, white, yellow. 



Troy. 1887. Fragrant. 

 unguicula'ris (clawed), i. Pale blue. December to 



March. Algeria. Fragrant. 

 a'lba (white). White. 

 grandiflo'ra (large-flowered), i. Large, deep 



purple. 1889. 



lilaci'na (lilac), i. Smaller, pale lilac. 1888. 

 margina'ta (margined), i. Violet, edged white. 

 1888. 

 Pavo'nia (peacock), i. Having a large white 



radiating blotch. 1888. 

 ,, specio'sa (showy). i. Clear violet, white, 



brownish-purple. 1888. 

 urmie'nsis (Urmian). *. Yellow. N.W. Persia. 



1900. 



va'ga (wandering). See I. LEICHTLINII. 

 variega'ta (variegated). 2. Striped. May. Hungary. 



1597- 

 venirico'sa (swollen), i. Pale blue. June. Dahuria. 



1800. 



ve'rna (spring), i. Purple. April. Virginia. 1748. 

 ver si' color (various-coloured), i. Variegated. May. 



N. Amer. 1732. 



,, virgi'nica (Virginian), ij. Blue. N. Amer. 1758. 

 villo'sa (shaggy). See MOR^EA PAVONIA. 

 viola' cea (violet-coloured). J. Violet. May. S. 



Europe. 1800. 

 vire'scens (greenish), i. Yellow. May. Switzerland. 



1820. 



virgi'nica (Virginian). See I. VERSICOLOR VIRGINICA. 

 visca'ria (viscous). See MOR^JA VISCARIA. 

 Wilso'nii (Wilson's). 1-2. Yellow, veined purple ; 



standards yellow. China. 1910. 



IRISH HEATH. Daboe'cia polifo'lia. 



IRON-TREE. Parro'tia pe'rsica. 



IRON WEED. Verno'nia. 



IRON WOOD. Sidero'xylon and Mftroside'ros. 



IRONWORT. Sideri'tis. 



IROUCA'NA GDIANE'NSIS. See CASEARIA RAMIFLORA. 



IRRIGATION. Experience shows that there is in the 

 kitchen-garden scarcely a crop that is not benefited by 

 a much more abundant supply of water than can be 

 obtained usually; and we can bear testimony to the 

 correctness of Mr. Knight's conclusion, not limiting, 

 however, our approval of such abundant watering to 

 late crops of peas, but to all, as well as beans, spinach, 

 and the entire cabbage tribe. Kidney beans and potatoes 

 are not benefited by such an abundance of water. " The 

 quantity of water," says Mr. Knight, "which may be 

 given with advantage to plants of almost every kind, 

 during warm and bright weather, is, I believe, very much 

 greater than any gardener who has not seen the result 

 will be inclined to suppose possible ; and it is greater 

 than I myself could have believed upon any other evi- 

 dence than that of actual experience. My garden, in 

 common with many others, is supplied with water by 

 springs, which rise in a more elevated situation ; and this 

 circumstance afforded me the means of making a small 

 pond, from which I can cause the water to flow out over 

 every part throughout the summer ; and I cause a 

 stream to flow down the rows of celery, and along the 

 rows of broccoli and other plants, which are planted out 



in summer, with very great advantage. But the most 

 extensive and beneficial use which I make of the power to 

 irrigate my garden by the means above mentioned, is 

 in supplying my late crops of peas abundantly with water, 

 by which the ill effects of mildew are almost wholly pre- 

 vented, and my table is most abundantly supplied with 

 very excellent peas through the month of October." 



ISA'NDRA. See THVSANOTUS. 



ISA'NTHUS. (From isos, equal, and anthos, a flower ; 

 referring to the regularity of the flowers. Nat. ord. 

 Lipworts [Labiatae]. Linn. i4-Didynamia, i-Gymno- 

 spermia. Allied to Tinnea and Teucrium.) 



Hardy annual. Seeds in April, in a peaty border, or 

 in a little heat, in March, and transplanted. 

 /. c&ru'leus (blue), i. Blue. July. N. Amer. 1818. 



ISA'TIS. (A Greek name borrowed from Dioscorides. 

 Nat. ord. Cruciferae.) 



Annual or biennial, branching herbs. The Dyer's 

 Woad (/. tincto'ria) was used by the ancient Britons to 

 stain their bodies. It has been largely superseded by 

 indigo for dyeing purposes, but is still cultivated for this 

 use in Lincolnshire. Seeds in ordinary garden soil. 

 I. boissieria'na (Boissierian). i. Yellow. Turkestan. 



1876. Annual. 

 glau'ca (sea-green). 2. Yellow. Asia Minor. 



Biennial. 

 tincto'ria (dyer's). 3. Yellow. England. Dyer's 



Woad. Biennial. 

 Villa' 'rsii (Villars's). 2. Yellow. Switzerland. 



ISCH'JEMUM. (From ischaimos, staunching blood ; 

 used for stopping the flow of blood. Nat. ord. Gramineae.) 



A stove perennial grass. Seeds ; divisions. Loam, 

 leaf-mould, and sand. 

 /. la'xum (loose). 2-3. Tropics of Old World. 



ISCHA'RUM. See BIARUM. 



ISCHNOSI'PHON. (From ischnos, a track or footstep, 

 and siphon, a tube; in allusion to the folded bracts 

 enclosing the flowers. Nat. ord. Scitaminaceaa.) 



Tall, branching, evergreen, fine foliage, stove herbs. 

 Cuttings in sand, in a close case, with bottom-heat. 

 Fibrous loam, peat, sand, and some nodules of charcoal. 

 /. Arou'ma (Arouma). Trop. Amer. 

 ,, obli'quus (oblique). Guiana. 

 Parke'ri (Parker's). 2. Yellow. July. Colombia. 



1823. 



smara'gdinus (emerald green). Leaves emerald-green, 

 with darker rib. Ecuador. 1870. 



ISE'RTIA. (Named after P. E. Isert, a German 

 surgeon. Nat. ord. Cinchonads [Rubiaceae]. Linn. 

 6-Hexandria, i-Monogynia.) 



Stove evergreen shrub. Cuttings in sandy soil, in a 

 hotbed, in spring or summer ; peat and loam, with a 

 little charcoal and silver sand. Summer temp., 60 to 

 85 ; winter, 55. 

 I. cocci'nea (scar let). 10. Scarlet. July. Guiana. 1820. 



ISMEUA. (Probably a commemorative name. Nat. 

 ord. Composites [Compositae]. Linn. ig-Syngenesia, 2- 

 Superflua.) 



This is now united to Chrysanthemum. 

 /. Broussone'tii (Broussonet's). See CHRYSANTHEMUM 



BROUSSONETII. 

 carina'tum (keeled). See CHRYSANTHEMUM CARIN- 



ATUM. 



,, madere'nsis (Madeira). See CHRYSANTHEMUM PINNATI- 

 FIDUM. 



ISME'NE. Peruvian Daffodil. (After Ismene, the 

 daughter of CEdipus and Jocasta. Nat. ord. Amaryllids 

 [Amaryllidaceae]. Ljnn. 6-Hexandria, i-Monogynia. United 

 to Hymenocallis.) 

 I. Ama'ncaes (Amancaes). See HYMENOCALLIS AMANCAES. 



andrea'na (Andrean). See HYMENOCALLIS ANDREANA. 



calaihi'num (cup-flowered). See HYMENOCALLIS 



CALATHINA. 



,, crinifo'lia (Crinum-leaved). See HYMENOCALLIS 



AMANCAES. 

 cyathifo'rmis (cup-shaped). See HYMENOCALLIS 



CALATHINA. 



defie'xa (turned-down). See HYMENOCALLIS DEFLEXA. 



