AN ENCYCLOPEDIA OF HORTICULTURE. 



11 



Acer continued. 

 A. Semenovi (Semenov's).* A slender and graceful species, with 



leaves closely resembling those of A. Ginnala, but smaller. 



Turkestan, 1879. 

 A. sempervlrena (evergreen^ Synonymous with A. hetero- 



phyllum. 



A. splcatum (spiked). Synonymous with A. wwmtanwm. 

 A. strlatum (striated). Synonymous with A. penntylvanieum. 

 A. tartaricum (Tartarian).* JL white, on crowded, erect, com- 



pound racemes. May. L more or less cordate, acuminated, 



serrated, with obsolete lobes, h, 20ft. 1759. This species is 



one of the first to expand its leaves hi spring. 

 A. tomentosnm (tomentose). Synonymoos with A. 

 A. tripartitum (three-parted). Synonymous with A. 



^Van Volxemli (Van Volxem's). ft. not known in England. 

 palmately three to five-lobed, Tery large, lightgreen above, 

 silvery and quite glabrous beneath. Caucasus, 1877. Distinct 



silvery and quite glabrous beneath. 



A, villosnm (hairy). JL fragrant, on lateral racemes. ApriL 

 Bads, fruit, and young leaves, silky, villous. L cordate, five-lobed, 

 Tillous beneath as well as the petioles ; lobes orate acute. A. 50ft 

 Himalaya, at high elevations. Not hardy. 

 A. vlrglniannm (Virginian). Synonymous with A. dtuyearjntm. 



ACERACEJE. An order of very ornamental hardy 

 trees, of which the Sycamore and Maple are well-known 

 representatives. 



ACEBAS (from a, without, and leerat, a horn ; the lip 

 having no spur). OBD. Orchideae. An interesting genus 

 of terrestrial orchids. Calyx of three ovate, equal, con- 

 verging sepals ; petals two, narrow, oblong ; lip spurless, 

 much longer than the calyx, narrow, oblong, with four linear 

 lobes. The most interesting species is the native one. 

 Indigenous to dry, chalky pastures in the south-east of 

 England, and it will only thrive in similar soils when grown 

 in gardens. Propagated by careful divisions of tubers 

 only. 



FIG. 10. FLOWER OF ACBRAS A>THROPOPHORA. 



A. anthropophora (man-bearing). Green Man Orchis. /. green- 

 ish, on a lotg spike ; lip longer than the ovary ; lip and petals 

 often margined with rtd. June. J. lanceolate. A. 1ft. See 

 Fig. 10. 



ACER.ATITJM (from a, not, and Iceras, a horn; the 

 stamens being destitute of the terminal bristles so con- 

 spicuous in its near ally, Elasoearpv*). OBD. THiaceas. An 

 interesting stove evergreen tree, very closely allied to Tata. 

 It thrives well in a mixture of loam and peat, and is in- 

 creased by ripe cuttings, which root readily if placed in 

 sand, under a hand glass, in heat. 



A. opposltifolium (opposite-leaved).* fl. white on terminal 

 three-flowered peduncles. June, L opposite,elhptic-oblong, 

 furnished with a few mucronated teeth, A. 20ft Amboyna, 

 1818. 



ACEBOSE, ACEROSTJS. Needle-pointed, fine, and 

 elender, with a sharp point. 



ACETABIOTJS. An adjective applied to plants used 

 in salads. 



ACEUS. A termination expressing a resemblance to 

 the thing whose name it terminates foUaceut, leaf-like, 

 of the texture of a leaf or folium, 

 ACHANIA. See Malvaviscns. 



ACHENE. A hard, dry, one-seeded, superior seed- 

 vessel. 



ACHERONTIA ATROPOS. See Sphinx Atropos. 

 ACHILLEA i named after Achilles, who is said to have 

 first discovered the medicinal qualities of this plant). In- 

 cluding Ptarmwra. MilfoiL OBD. Composite. A large 

 genus (.about fifty species), containing numerous hardy, 

 border and alpine plants. Flower-heads small, corymbose ; 



Achillea continued. 



involucral scales oblong, often with a shrivelled appear- 

 ance ; receptacle with membranous scales, resembling 

 chaff ; ray florets few, sometimes rather large and showy ; 

 pappus none. Leaves ternate, simple or compound. All 

 the species are easily cultivated in ordinary garden soil 

 A. Evpatorium and other large-growing kinds are well 

 suited for borders or groups, whilst the alpine section 

 should be planted on the rockery. A great number of 

 species, although excellent for naturalising in rough 

 shrubberies, are totally unfitted for garden culture. Propa- 

 gated, during spring, by root divisions, cuttings, and seeds. 



A. fflgypttaca (Egyptian!* jC-fead, rich bright yellow, in closely 

 packed terminal corymbs, which are from 2in. to 4in. across. 

 Summer. L pinnate ; leaflets obtusely lanceolate, serrate, silvery 

 white, 6in. to Sin. long. A. l*ft to 2*ft Levant, 1640. Handsome 

 perennial, thriving btrt in aWm position. 



borne singly on 



y on stalks about 6in. or Bin. high, ummer. {.narrow, 

 * dense ^ very rosette, the margins prettily crimped. 

 Greece. A pretty alpine, of compact habit 



America, 1803. 



J14M* white. August I. in a rosette, 



Austria, 1596. A pretty alpine. 



(golden-flowered).* jL-keadt golden yellow, borne singly 

 18m. high. Summer and autumn. L larger than hi A. 

 ta, with which species it is sometimes confused. Levant, 



agerattfolia, with which species it is 

 1739. Habit tufted. Requires a 



position. 



Fio. 1L ACHILLEA CnvEiE, showing Habit and detached 

 Flower-head. 



A, Clavennw (Clavenna's).* JL-head* white, hi neat and compact 

 heads. Spring and summer. I. bi-pinnatifid : segments linear, 

 obtuse, slightly denticulated at the apex. A. lOin. Austria, 1656. 

 A very neat and pretty species, having dwarf tufted habit and a 

 hoary appearance. See Fig. 11. 



A. decolorans (staining). JLJuadt whitish yellow. July, tun- 

 divided. A. 1ft Native country unknown. 1798. 



Fio. 12. ACHitLEA Ei'PATORH'M, showing Habit and detached 

 Flower-head. 



A. rmpatorium (fern-leavedX* fl-Keed, brilliant yellow, in dens* 

 convST compound corymbs, which are often 5m. across, Ustang 

 two months in full beauty. June to September. L numerous, 

 linear, pinnate, lobed and serrated, hairy, rough. A, 4ft .toSft 

 Caucasus, 1801 This noble plant should be f row "***f'? ""^ 

 the border, and kept neatly staked. STX. A. filymdul*. See 

 Fig. 19- 



A. fllipendnla (Dropwort-leaved). Synonymou* with A. Eupe- 



