horn] 



&fje EreaSurg at 3Satang. 



598 



by the jointed ring which surmounts the 

 ovary— whence the name, from ormos, a 

 necklace. [M. T. M.] 



HORNBEAM. Carpinus Betulus. —, 

 HOP. Ostrya vulgaris. 



HORNBMANNIA pinnata is a slender 

 prostrate creeping Nepalese herb, with 

 ovate pinnately divided leaves and small 

 flowers, forming a genus of Scrophulariacece 

 nearly allied to Sibthorpia, and differing 

 chiefly in the corolla, which is more dis- 

 tinctly contracted at the base into a short 

 tube. The name Hornemannia had been 

 previously applied to a species of Tlii- 

 baudia, and to Mazus 7iigosus. 



HORN OF PLENTY. Fedia Cornucopia*. 



HORN PLANT. Ecklonia buccinalis. 



HORNSCHUCHIA. A Brazilian genus 

 of doubtful affinity, placed by Von Martius 

 in the ebony family. H. bryotrophe, 

 so called from the moss growing on its 

 leaves, is said to be a scrambling shrub, 

 with three to five-nerved oblong unequal- 

 sided leaves, and small wliite flowers in 

 racemes arising from the lower naked 

 shoots, each flower with a cup-shaped 

 nearly entire calyx, six petals, six stamens, 

 and a three-celled ovary which developes 

 into a fruit of three cylindrical carpels 

 each about an inch long, [A. A. B.] 



HORNUS. Anything tbe produce of the 

 same year ; thus Rami liorni are branches 

 not a year old. 



HORNWORT. Ceratophyllum. Horn- 

 worts isLindley'sname for the Ceratophyl- 

 lacece. 



HORNY. Hard and close in texture, 

 but not brittle, as the albumen of many 

 plants. 



HOROLOGITJM FLORJE. A time-paper 

 of flowers ; a table explaining the time at 

 which the same flowers expand in different 

 latitudes. 



HORSEBANE. (Enanthe Phellandrmm. 



HORSECHIRE. Teucrium Chamcedrys. 



HORSE-FLOWER. Me.ampyrum sylva- 

 ticmn. 



HORSEHEAL, or HORSHELE. Inula 



Eelenium. 



HORSEHOOF. Tussilago Farfara. 



HORSEKNOB. Centaurea nigra. 



HORSE-MUSHROOM. A term com- 

 monly applied to the larger kinds of mush- 

 room, as Agaricus arvensis, to the exclu- 

 sion of the true pink-gilled A. campestris. 

 Though the latter is doubtless the more 

 delicate and makes the finest ketchup, the 

 horse-mushroom need not be excluded on 

 account of its supposed unwholesomeness. 

 It is largely consumed in London and all 

 our greater towns, and wlien eaten in mode- 

 ration is an excellent article of food. The 

 species is distinguished from A. campestris 

 by its paler gills and generally double ring, 



but especially by its turntng yellow when 

 bruised. A variety of this species, com- 

 monly known as the Hedge Mushroom, 

 with a yellower scaly pileus, is an object of 

 suspicion, as is also one which occurs in 

 woods and has a bell-shaped pileus which 

 instantly becomes of a deep yellow when 

 touched. A closely allied species or variety 

 is known by the name of Springers. It is 

 observable that in Italy this species is 

 considered far safer than the common 

 mushroom. In France, also, it is highly 

 esteemed, and is known under the name of 

 Boule de Neige. [M. J. B.] 



HORSEPIPE. Equiseium. 



HORSERADISH. Cochlearia Armo- 



racia. 



HO RSERADISH-TREE. Moringa ptery- 

 gosperma. 



HORSETAIL. Equisetum. — , SHRUBBY. 

 Ephedra. — TREE. Casuarinaequisetifolia. 



HORSE WEED. Erigeron canadense ; 

 also Collinsonia. 



HORSEWOOD, JAMAICA. Calliandra 

 comosa. 



HORSFIELDIA. A genus of umbellifers 

 having the fruit flat and covered with 

 wool, each half of it with three ribs on the 

 back. The genus was founded in lionour 

 of Dr. Horsfleld, well known for his re- 

 searches in tbe natural' history of Java. 

 The only species is a Javanese prickly 

 shrub, having some of the leaves heart- 

 shaped and five-lobed, the upper three- 

 lobed and densely hairy. The genus is of 

 interest to the botanist, as in some mea- 

 sure connecting umbellifers and ivyworts, 

 having the fruit of the former and the 

 general habit of the latter. [G. D.] 



HORTENSIA. (Fr.) Hydrangea Horten- 

 sia. 



HORTENSIS. Of or belonging to a 

 garden. 



HORTIA. A Brazilian shrub forming a 

 genus of Rutacece. The flowers are ar- 

 ranged in a corymbose manner on thick 

 stalks ; they have a cup-shaped calyx ; five 

 lance-shaped petals much longer than the 

 sepals, hairy at the base on their inner 

 surface, and with their points turned in- 

 wards like a hook; five stamens inserted 

 on a disk with the petals, the filaments 

 glandular and flattened ; and a tbick style 

 surmounting a five-lobed ovary. The fruit 

 is a capsule with one or two-seeded compart- 

 ments. H. brasiliana is said to possess 

 febrifugal properties. [M. T. MJ 



HORTONIA. A genus of SchizandraceoB, 

 consisting of smooth shrubs with entire 

 leaves, axillary cymose inflorescence, and 

 pale yellow flowers. The sepals and petals 

 number about thirty, in many rows ; the 

 stamens seven to ten, their filaments hav- 

 ing two glands at their base. There are 

 from fifteen to twenty ovaries, and the 

 stigma is sessile. The fruit consists of 

 dry closely-agglomerated drupes. There 



