322 orchid-grower's manual. 



There are many of tbe Australasian species which, succeed admirably 

 in a cool house ; but some few even from that continent enjoy the treat- 

 ment of the East Indian house during the season of growth, and we 

 have found D. Inr/ibbum, D. sv/perbiens, B. Goldiei, D. Phalaenopsis, and a 

 few others do best in a stove where Crotons were grown and where no 

 shading was used. When the growth is completed, they should be 

 gradually inured to a cooler temperature, and supplied with a reduced 

 quantity of water. In the case of B. speciosnm and B. speciosum Hillii 

 the plants should be removed to the open air for a few weeks towards the 

 end of summer, which will thoroughly ripen their just-matured stems. 

 They should, however, be returned to the cool house before any danger 

 from the fall of the external temperature is to be apprehended, and be 

 placed in a gentle heat at the commencement of winter to start them 

 into flower if they are required to bloom at that season ; but if not 

 wanted until the spring they are to be kept cool and dry all the winter. 



They are propagated in different ways. Some of them form plants 

 on the old stems, which should be cut off and potted. Some are propa- 

 gated by cutting the old stems from the plants after they have done 

 blooming, and laying them on the moist warm surface of a hotbed, or 

 propagating pit, to induce them to break at the joints. Others, again, 

 are increased by dividing the plants according to the directions given in 

 the chapter devoted to remarks on Propagation. 



D, ADUNCUM, Wallick. — A rather straggling growing evergreen species, 

 producing its flower spikes from the old slender drooping stems, the short 

 three- to five-flowered racemes being protruded through the scarious sheaths 

 just above the joints ; the small blossoms are white tinted with pink, and appear 

 at difEerent times in the year, lasting some two or three weeks in perfection ; 

 the leaves are linear-lanceolate acute ; it succeeds best grown in a pot with peat 

 and good drainage. This species is not so showy as manj' of the Dendrohiums, 

 but it is well worth growing where there is room for it. — India. 



'¥lG,.—Bot. Reg., 1846, t. 15 ; Bot. Mag., t. 6784. 



D. AGGREGATUM, Boxb. — A pretty dwarf evergreen species, growing about 

 4 inches high, with clustered one-leaved oblong-ovate furrowed pseudobulbs, 

 the inflorescence consisting of a short loose raceme being produced from the 

 axil of a small scale on the side of the pseudobulb ; the flowers are deep' 

 golden-yellow with an orange-yellow stain at the base of the pubescent lip ; 

 D. aqgregaiimi majus is a large-flowered variety. They flower in March and 

 April, lasting two weeks in bloom, and will do either on a block or in a pot 

 with peat. It is a desirable species. — India. 



WlG.—JBot. Beg.,t. 1095 ; Bot. Mag., t. 3643 ; Paxton, Mag. Bot., vi. p. 145 with tab. ; 

 Annates de Gand., 1849, t. 263 ; Hooh. First Cent. Orch. Pl.,'t. 8. 



