AND GENEKAL HORTICULTURE. 



181 



HAP 



hanging baskets need in no way differ from 

 that used in the general culture of plants. 



Haploca'rpa Leitchlini. A beautiful little 

 south African composite plant in the way of 

 Gazania. The plants are stemless, and form 

 rosettes of Dandelion-shaped leaves, seven to 

 nine inches long, glossy above, and thickly 

 covered with white closely-pressed silky 

 down, beneath. The flowers are two to three 

 inches across, of a rich golden yellow color, 

 backed with purplish brown. Seeds sown in 

 spring, bloom from mid-summer until frost. 



Hardenbe'rgia. Named after the Countess of 

 Hardenberg, ih Germany, sister to Baron 

 Hugel. Nat. Ord. Leguminosce. 



A small genus of green-house evergreen 

 climbers found in southern and western Aus- 

 tralia. They are closely allied to Kennedya, 

 and are desirable green-house plants from the 

 profusion of their flowers, which are mostly 

 purple, arranged in stalked racemes, and 

 nearly as large as those of the pea. The 

 plants are of easy culture and are readily in- 

 creased by cuttings ; introduced about 1800. 



Hardback. A common name for Spiraea tomen- 

 tosa. 



Hardy Annuals. This term applies to those 

 plants that perfect their growth and ripen 

 seed the same year they are sown in the open 

 ground. See Annuals. 



Hardy Herbaceous Plants. See Herbaceous 

 Plants. 



Hare-Bell. See Scilla nutans. 



Hare's-Ear. Bupleurum rotundifolium. 



Hare's-Foot. Ochroma Lagopus. 



Hare's-Foot Fern. Davallia Canariensis. 



Hare's-Tail Grass. Lagurus ovatus. 



Haricot. The French name for Kidney Beans. 



Harlequin Flower. African. The genus Spar- 

 axis. 



Harpa'lium. From Harpalyce, daughter of 

 Lycurgus. Nat. Ord. Composite. 



H. rigidus, the only species, is Helianthus rigi- 

 dus of Gray, a coarse-growing perennial, with 

 yellow flowers, common in the Western 

 States. 



Harpa'lyce. Named after Harpalyce, daughter 

 of Lycurgus. Nat. Ord. Leguminosce. 



A small genus of handsome, erect, pinnate- 

 leaved bushes from Mexico and Brazil. H. 

 Braziliana bears handsome, scarlet pea-shaped 

 flowers in a panicle toward the ends of the 

 shoots. The Mexican species are smooth, 

 and bear purple flowers. Propagated by 

 cuttings. 



Hart-Berries. Vaccinium Myrtillus. 



Hartford Fern. See Lygodium. 



Hart's-tongue Fern. See Scolopendrium. 



Harvest-bells. Oentiana Pneumonanthe. 



Hartwe'gia. Named after M. Hartweg, court 

 gardener to the Emperor of Austria, and once 

 a collector for the Royal Horticultural Soci- 

 ety. Nat. Ord. Orchidacece. 



A small genus of epiphytal Orchids, of but 

 little interest, except in large collections. H. 

 purpurea is a very pretty little plant, with 

 spotted foliage, and long, slender spikes of 

 purplish pink flowers. It is an almost con- 

 stant bloomer, growing freely on blocks or 

 cork in an ordinary green-house. It is a 



HEA 



native of Mexico, introduced in 1837, and is 

 increased by division of plants in the spring. 



Hastate. Shaped like the head of a halbert ; 

 enlarged at the base into two lobes directed 

 nearly horizontally, as in the leaf of Sheep's 

 Sorrel. 



Hautbois. Fragaria elatior. A species of Straw- 

 berry. 



Hawk-weed. See Hieracium. 



Hawo'rthia. Named in honor of A. H. Haworth, 

 a distinguished English botanist. Nat. Ord. 

 Liliacea}. 



A pretty and curious genus of succulents, 

 that offer many inducements to the admirers 

 of that class of plants. They are natives of 

 south Africa, and are commonly known as 

 Aloes, from which they were separated. The 

 plants are mostly small, but particularly 

 interesting on account of their upright flow- 

 ers, which are always gay, and the translu- 

 cent leaves of some of the species. They 

 were first introduced in 1727, require the 

 same treatment as the Aloe, and are readily 

 increased from suckers or from seed. 



Hawthorn, See Cratcegus. 



Haylo'ckia. Named after Mr. Haylock, gar- 

 dener to Dr. Herbert. Nat. Ord. Amaryllida- 

 cece. 



A small bulb from Buenos Ayres, allied to 

 Zephyranthes ; flowers straw-colored, solitary. 

 It is nearly hardy, the protection of a cold 

 frame only being needed in this climate. 

 Propagated by offsets. Introduced in 1829. 



Hazel Nut. See Corylus. 



Head. A close terminal collection of flowers, 



surrounded by an involucre, as in composite 



flowers. 

 Heal-all. Collinsonia Canadensia and Rhodiola 



rosea. 

 Heal-all, or All-heal. Prunella vulgaris, which 



see. 



Heart of the Earth. Prunella vulgaris. 

 Heart's-ease. See Viola tricolor. 

 Heath, or Heather. A general name for the 

 genera Erica and Calluna 



American False. Hudsonia ericoides. 



Irish. Ddbeoda (Menziesia) polifolia. 



Mediterranean. Erica Mediterranea. (E, 

 carnea.) 



Sea. FranJtenia Icevis. 



Tree. Erica arborea. 



Cypress. Lycopodium alpinum. 



Heather. Scotch. Erica cinerea and Calluna 

 vulgaris. 



Heating by Flues. This is now but little done, 

 except by beginners whose means are limited, 

 or where a temporary green-house is erected. 

 The objection to heating by flues is, that 

 unless carefully constructed, there is danger 

 from fire, or escape of gas injurious to the 

 plants ; still, many large green-house estab- 

 lishments are yet heated by flues, in which 

 plants are grown quite as well as by hot- water 

 heating. In constructing the furnace for flue 

 . heating, the size of the furnace doors should 

 be from ten to sixteen inches square, according 

 to the size of space to be heated ; the length 

 of the furnace bars from eighteen to forty 

 inches ; the furnace should be arched over, 

 the top of the inside of the arch from sixteen 



