10 



ACACIA, FALSE 



ACANTHOMINTHA 



ACACIA, FALSE. See JRobinia Pseudacacla. 

 ACACIA, ROSE. See Robinia hispida. 



AC2ENA (from akaina, thorn). Rosacece. Dwarf, 

 hardy perennial sub-shrubs with inconspicuous green 

 flowers, cultivated in rockeries for their showy crimson 

 spines, which are borne on the calyx ; 1-12 in. As ground- 

 work for dwarf, spring-flowering bulbs, as trilliums, they 

 are unsurpassed. Useful in protecting native orchids and 

 bog plants. Prop, by cuttings, creeping rootlets, divi- 

 sions and seeds. Monogr. by T. Citerne, in Revue des 

 Sciences Naturelles de 1'Ouest, 1871, Nos. 1, 2, 3. 



microphylla, Hook. f. Lvs. evergreen, pale, pinnate, 

 serrate : spines attractive all summer and autumn. N. 

 Zeal. Grows well in either wet or dry soils. 



ovalifdlia, Ruiz & Pav. Lvs. a little larger than the 

 latter; leaflets oblong, subcuneate. Chile. Gn. 52, p. 46. 



A. argentea, Ruiz & Pav. Lvs. silvery. Chilean Andes. A. 

 adscendens, Vahl. Austral. A. cuneata, Hook. & Arn., is a good 

 species according to some, but may = A. sericea. Magellan. A. 

 millefolia, Nicholson. Fruit not in globular heads. Hab. ? 

 A. myriophylla, Lindl. Fern-like. Chile. Gn. 37, p. 177. A. 

 Novce-Zealdndice, T. Kirk. Good species according to some, but 

 may = A. microphylla. A. ovlna, A. Cunn. Austral. A. pin- 

 natifida, Ruiz & Pav. Chile. A. pulchella, Nicholson. Lvs. 

 bronzy. A. Sanguisorbce, Vahl. N. Zeal. A. sarmentdsa, Car- 

 mich.=A. Sanguisorbse. A. sericea, Jacq. f. Mex. A. splen- 

 dens, Hook. & Arn. Chile. j fi KELLER 



ACAI/JTHA (a name given by Hippocrates to a net- 

 tle). Euphorbiacece. Tender foliage plants much used 

 for greenhouse ornament, and especially for bedding- 

 out. For the latter purpose it is desirable to have strong, 

 well hardened plants in 5-in. pots, which should be set 

 out the last week in May, and grown in a rich soil with- 

 out check. Prop, by cuttings, chiefly in three ways: 

 (1) in fall from outdoor bedded plants ; (2) from plants 

 lifted in fall, cut back, and kept for spring stock ; 

 (3) from stock plants in pots reserved from the 

 previous season. The well ripened wood of these 

 last is a great advantage, and gives cuttings that may 



11. Acalypha Wilkesiana, var. Macafeana (X %). 



be taken with a heel. A mature stem will furnish sev- 

 eral beside the top one. This is the best method for gen- 

 eral purposes. Cuttings are taken below joints, and re- 

 quire mild bottom heat. For greenhouse ornament in fall 

 and winter, excellent specimens may be secured from 

 cuttings made in summer from such stock plants. 



Cult, by ROBERT SHORE. 



Wilkesiana, Mull. Arg. (A. tricolor, Hort. ex Seem.). 

 Lvs. ovate-acuminate, bronzy green, variously mottled 

 with red: fls. inconspicuous. S. Sea Islands. Var. Mac- 

 afeana, Hort. Fig. 11. Lvs. red, marked with crimson 

 and bronze. Perhaps the commonest variety. R.H. 

 1882:288. Var. marginata, Hort. Lvs. with a crimson 

 margin. F.M. 1875: 156. Gn. 7, p. 521. Var. musaica, 

 Hort. Lvs green, with orange and red markings. Var. 

 obovata, Hort. Lvs. obovate, green, edged white when 

 young, changing to bronzy green with rosy pink margins. 

 Var. triumphans, Hort. (A. triumphans, Lind. & Rod.). 

 Lvs. large, spotted with crimson, green, and brown. 

 I. H. 35:55 (1888). 



Godseffiana, Mast. Lvs. ovate or ovate-lanceolate, 

 green, with creamy margin : fls. unknown. G.C. III. 

 28:242. Gng. 6:278. F.E. 10:554. A. F. 13:1286. 



hispida, Burm. f. (A. Sdnderi, N. E. Brown). Fig. 

 12. Cult, chiefly for its long red, amarantus-like spikes 

 of flowers : Ivs. green. E. Ind. Burm. Fl. Ind., p. 303, 

 t. 61, f. 1. A. F. 13:1285. A. G. 19: 453, 827. F.E. 10:554. 

 G.C. III. 23: 248. Gt. 47: 276. Gn. 54:1180. Gng. 6: 279. 

 The leading novelty of 1899. Called by various names, 

 as Chenille Plant, Philippine Medusa, and others. 



A. colorata, Spreng.=A. integrifolia. A. Commersoniana, 

 Baill.=A. integrifolia. A. macrophylla, Hort., not HBK.=A. 

 Wilkesiana, var. macrophylla. A. marginata, Hort., not 

 Spreng.=A. Wilkesiana, var. marginata. A. obovata, Hort., not 

 Benth.=A. Wilkesiana, var. obovata. A. integrifblia, Willd. 

 4-7 ft. : Ivs. thick, glabrous, oblong, green above, colored below. 

 Madagascar. Other trade names are A. Hamiltoniana (Int. 

 1893), A. Miltoniana, and A. torta. -^y ]yj 



ACAMFE (named from the brittle nature of the flow- 

 ers). Orchiddcece. Greenhouse epiphyte. 



A. longifblia, Lindl. (Vanda longifolia, Lindl.). E. Ind. A 

 species of little decorative value, said to be sold by its synonym. 



ACANTHEPHlPPIUM (meaning unknown). Often 

 spelled Acanthophippium. Orchidacece. Terrestrial 

 stove orchids. Fls. rather large, racemose, few ; sepals 

 combined to form a broad pitcher. They do best in a 

 compost of loam and leaf -mold. Being natives of the 

 hottest, moist, densely shaded jungles, they require much 

 heat and moisture during the growing period. Good 

 drainage is essential. Prop, by dividing the pseudobulbs 

 as soon as growth begins. Cult, by E. O. ORPET. 



Javanicum, Blume. Fls. yellow and red, with dis- 

 tinct longitudinal stripes. Java. B. M. 4492. 



A. bicolor, Lindl. Fls. purple and yellow. A. Curtisii,Reichb. 

 f . Fls. many colored. Distinguished by the five keels between 

 the side laciniae. Malay Arch. G.C. II. 25 :169. A. Sylhetense, 

 Lindl. Fls. white, much spotted. Himalayas. 



ACANTH&DIUM. See Slepharis. 



ACANTHOLIMON (akanthos, spine, and limon, sea 

 lavender). Syn.,Armeriastmm. Plumbaginacece. Hardy 

 evergreen perennials ; dwarf, tufted, with sharp-pointed, 

 rigid leaves; less common than Statice and Armeria. An 

 oriental genus of slow-growing and sun-loving plants for 

 rockeries. Prop, by seeds (which germinate slowly) sown 

 carefully on a warm but somewhat shaded border, and 

 transplanted when plants are large enough to handle ; by 

 cuttings made in late summer and wintered in a frame ; 

 by very carefully made divisions. Boissier describes 74 

 species in the Flora Orientalis. See A. Bunge, Die Gat- 

 tung Acantholimon, St. Petersburg, 1872. 



glumaceum, Boiss. Height 6 in. : Ivs. green : fls. 

 small, rose, on one-sided, spicate racemes, 6-9 in each 

 short, dense spikelet. July-Sept. Armenia. F. 8.7:677. 

 Gn. 31: 592. R. H. 1891, p. 489. 



venustum, Boiss. (Armer id strum diantlii folium, O. 

 Kuntze). About 8 in. : Ivs. grey-green, very stiff : fls. 

 larger than the last, rose, 12-20 in each long, loose spike- 

 let. July-Sept. Asia Minor. R.H. 1866: 450. Gn. 13:117. 



B. M. 7506. Gn. 53, p. 405. T T> T ^ 



J. B. KELLER and W. M. 



ACANTHOMINTHA. Labiates. THORNY MINT. Ten* 

 der annual, with the habit of Lamium. Its chief inter- 

 est is botanical, the nearest relative of the genus being 

 the Brazilian genus Glechon. Only two species known. 

 Prop, by seeds in spring under glass. 



