hypt] 



Cije Crcatfurj) of SStrtaug. 



616 



three or four subsessile flowers, fifteen ' 

 united stamens, and a five-lobed ovary, 

 with several ovules in each cell. [J. T. S.] I 



HYPTIS. A genus of labiates, having < 

 the calyx with five nearly equal teeth, 

 which are very acute; and the corolla about ! 

 as long as the calyx, the upper lip with four i 

 entire lobes, the lower undivided. The | 

 species are herbs or undershrubs, varying 

 much in general aspect ; they are chiefly , 

 natives of the warmer parts of South ] 

 America. [G. D.] j 



HYSSOP. Hyssopus officinalis. — of Scrip- | 

 ture. Capparis spinosa. — , BASTARD. ] 

 Teucrium Pseudo-hyssopus. — , HEDGE, j 

 Gratiola officinalis. 



HYSSOPUS. A genus of Labiate?, con- ! 

 sisting of small bushy herbs, with lance- I 

 shaped leaves, rolled under at the margin, | 

 a calyx marked with fifteen ribs, and four | 

 fertile diverging stamens. II. officinalis, 

 the common Hyssop, of Southern Europe, j 

 was once much employed as a carminative i 

 in flatulence and hysterical complaints, but 

 is now seldom employed. [M. T. M.] 



HYSTERANTHIUS. When leaves ap- 

 pear after flowers ; as in the almond. 



HYSTERIA. Corymbis. 



HYSTERIUM. A genus of pyrenomy- 

 cetous Fungi, distinguished by a hard 

 more or less linear dark perithecium, open- 

 ing by an elongated narrow aperture. The 

 species grow on naked wood, bark, leaves, 

 &c, and are sometimes so similar to 

 lichens that it is difficult to distinguish 

 them when the crust is worn away or ob- 

 solete. H. Fraxini and Rosen are to be 

 found commonly on fallen twigs of ash 

 and rose. The species are numerous, and 

 occur in all parts of the world. [M. J. B.] 



IANTHE. A genus of Scrophulariacece 

 closely allied to Verbascum, and only differ- 

 ing from the Blattaria section of that 

 genus by the stamens, of which two only 

 bear anthers, two being reduced to barren 

 filaments, and there being no rudiment of 

 the fifth. I. bugulifolia, the only known 

 species, grows in the neighbourhood of 

 Constantinople. It has the habit of the 

 more glabrous species of Verbascum or Cel- 

 sia, with the leaves chiefly radical, and 

 greenish-yellow flowers, remarkable for 

 their almost metallic appearance when 

 fresh. 



IANTHINUS. Pure blue stained with 

 red, so as to be intermediate between the 

 two colours. 



IBERIDE DE PERSE. (Fr.) Iberis 

 semperflorens. 



IBERIDELLA. A genus of Gruciferce, 

 allied to Hutchinsia, differing principally i 

 in the truncate pouch, with a long slender | 

 style. They are small undershrubs, with 

 white or rose-coloured flowers. [J. T. S.] 



IBERIS. A genus of Gruciferce, contain- i 

 ing numerous species from Europe, East- , 

 ern Asia, and Northern Africa. They are 



easily known from most of their allies, by 

 their flat corymbs of flowers with the two 

 exterior petals larger than the ethers, so 

 that the inflorescence is radiant. These 

 Candytufts are nearly smooth an uals, or 

 small undershrubs, with oblong or linear 

 leaves (pinnatifid in many of the annual 

 kinds), and white pink or purple flowers, 

 fragrant in some of the species. The seed- 

 pouch is oval or roundish, flattened so that 

 the partition is in the narrowest diameter, 

 and the valves compressed, with an ex- 

 panded wing on the keel. The seed is so- 

 litary in each of the two cells, with the 

 radicle bent 0A r er the edges of the flat co- 

 tyledons, on one side. The most common 

 species is I. amara, which is found wild in 

 the south of England as a weed in culti- 

 vated grounds, and many of the other spe- 

 cies are common in gardens. [J. T. S.] 



ICACINACE2E. (Icacinece.) A natural 

 order of thalamifloral dicotyledons, con- 

 sisting of evergreen trees and shrubs, al- 

 lied to Olacacece, and differing from that 

 order in the calyx not enlarging with the 

 fruit ; in the stamens being alternate with 

 the petals ; in the ovary being normally 

 many-celled, with axile placentation, and 

 one-celled only by abortion ; and in the 

 ovules being suspended below the summit 

 of the cell. The plants are chiefly tropical, 

 and there are about thirteen genera and 

 seventy known species. Nothing is known 

 regarding their properties. Bentham makes 

 them a tribe of Olacinece. Lindley places 

 the order under hisberberal alliance of hy- 

 pogynous Exogens. [J. H. B.] 



ICACINA. A genus of Icacinaceoe, with 

 shrubby ascending or twining branches, 

 smooth leaves, panicled flowers, and scarlet 

 fruit. Calyx small, five-cleft ; petals five, 

 valvate villous; stamens five, alternate with 

 petals, hypogynous ; ovary one-celled, with 

 two pendulous ovules. Fruit indehiscent, 

 the seed pendulous with a prominent raphe. 

 There are three or four known species, na- 

 tives of the western parts of tropical 

 Africa. [J. H. B.] 



ICACO. Chrysobalanus Icaco. 



ICE-PLANT. Mesembryanthemum crys- 

 tallinum. 



ICHNANTHUS. A genus of grasses, be- 

 longing to the tribe Panicece, and now 

 generally included in Paniacm. The only 

 species described, I. panicoides, is a native 

 of Brazil and Guiana. [D. M.] 



ICHNOCARPUS. A genus of dogbanes, 

 having the stamens Ave in number, their 

 anthers distinct from the stigma, which 

 is ovate acuminate ; and the seed-vessels 

 very slender. The name is indicative of 

 the slender capsules. /. fratescens is an 

 ornamental stove shrub, a native of the 

 East Indies, with oval lanceolate leaves, 

 and small flowers. [G. D.] 



ICICA. A genus of Amyridacece, found 

 chiefly in the tropics of the western hemi- 

 sphere, only two or three out of the twenty 

 species described occurring in the eastern. 



