Arenga 



(72) 



Arissema 



saxatilis, 8", Je., wh. 

 rotuudifplia, 6", Jy., wh. 

 verna, 3", My., wh. (*>f>f. 



Other Species : 

 ciliata, 6", Jy., wh. 

 Huteri, U", Je., wh. 

 laricifolia, 6", Je., wh. 



ARENGA. 



A genus of Palms (ord. Palmse). The juice 

 of saccharifera yields sugar, and its trunk sago. 

 It needs plenty of heat, with a frequent use of the 

 syringe, as thrips are troublesome; 40'. It is 

 propagated by seeds, and two-thirds loam and 

 one-third cow manure suit it. 



ARETHUSA. 



Pretty and uncommon terrestrial Orchids (ord. 

 Orchidacese). They are nearly hardy, but require 

 a, mulching of leaves in winter. Well-rotted 

 manure and sphagnum, with a little peat, suit. 



Principal Species : 



bulbosa, 8", My., ro. pur., fragrant. 



Other Species : 



iliaris (see Bartholiua). plicata (sec Pogonia). 



ARGANIA. 



A greenhouse evergreen tree (ord. Sapotacerc), 

 doing well in ordinary garden soil, and propagated 

 (1) by layers, (2) by cuttings taken in autumn or 

 spring, and covered with a bell-glass in a warm 

 greenhouse. 



Only Species : 



Sideroxylon (the Iron Wood), 15' to 20', Jy., yel. 

 (syn. Sideroxylon spinosum). 



ARGEMONE. (PRICKLY POPPY.) 



Showy plants (prd. Papaveracens) covered with 

 prickles, and having flowers which bear a resem- 

 blance to those of the horned Poppy (Glaucium). 

 Few but annual species are in cultivation in this 

 country ; these are sown where they are to bloom, 

 in ordinary soil, in early spring. They like sun. 



Principal Species : 



mexicaiia, 2', Je., yel. 

 albiflora, 1', Jy., wh. 

 ochroleuca, 2', Aug., yel. 



grandiflora, 2', Jy., wh., 



hlf-hdy. per. 

 hispida, '2', Aug., wh. 



ARGYREIA. 



Greenhouse or stove climbers or shrubs (ord. 

 Convolvulacese), of vigorous habit and free- 

 blooming tendencies. Bracteata and speciosa are 

 used in India for the making of poultices, and 

 malabarica has purgative properties. Propagated 

 by cuttings under a hand-glass in bottom heat. 

 Soil, light and rich, such as a mixture of equal 

 parts of peat, loam, and sand. 



Principal Species : 

 cuneata, 4' to 5 , Jy., pur. 

 cyinosa, 10', pk. 



speciosa, 10', Jy., ro. 

 splendens, 1', Xov., red. 



Other Species :- 

 acuta, Jy., wh. 

 capitata, Jy., pur. 



nmlabarica, Je., cream, 

 poiuacea, pk. 



ARGYROXIPHIUM. 



A greenhouse herbaceous perennial (ord. Com- 

 positse). Sandwicense has purple flowers, and is 

 clothed with silvery hairs ; 3' (syn. Argyrophyton 

 Douglasii). It is propagated by seeds, sown when 

 ripe in gentle heat, and equal parts of loam and 

 leaf soil, with sand, suit it. 



Aretia (sec Androsace). 

 Argolasia, (see Linaria). 

 Ari/yrochaeta (.tee Partlicnium). 

 Aryyroplnjton (see Argyroxiypliium). 



ARISSEMA. 



Tuberous rooted stove, greenhouse, and hardy 

 plants (ord. Aroidea;), often with curiously tailed 

 Mowers. Propagated by division of the rootstock. 



AKISTOLOCJIIA TKICAVDATA (see p. 74). 



