1898 



VANDA 



vex surface when finished. A plentiful supply of water 

 is essential at all seasons with copious syringing over 

 the foliage in bright weather. The compost should 

 never be allowed to remain dry for a long time. 



V. tricolor and species like it grow very well among 

 foliage plants in the warmhouse, where their large 

 ae>ial roots, which are freely emitted from the sides of 

 the stems, may ramble among the foliage and thereby 

 retain moisture a long time after syringing. A few 

 species, such as V. Amesiana, V. ccerulea and V. 

 Kimballiana, with one or two other alpine species, re- 

 quire about ten degrees cooler temperature, but other- 

 wise similar treatment to other species of the genus. 



Stock is increased by removing a foot or more of the 

 leading growth with a sharp knife, allowing several 

 roots to remain attached to each growth and .basketing 

 them in the usual manner. These new pieces should be 

 frequently syringed overhead until they become es- 

 tablished or they are likely to shrivel. The old stems 

 will nearly always send out several new growths. 



The principal insect enemies to Vandas are several 

 species of scale, which breed fast in a dry atmosphere. 

 They can be kept in check by syringing with strong 

 tobacco water and by sponging the plants with a 20 

 per cent solution of alcohol. jj f M t GREY. 



A. Labellum spurred. 



B. Lvs. flat, or channeled and keeled, 



toothed or lobed at the apex. 

 C. Racemes loose: labellum with 



lateral lobes. 

 D. Fls. 1-1% in. across. 

 E. Color blue ................ 1. 



EE. Color yellow .............. 2. 



3. 



EEE. Color white or pale yellow, 

 but streaked and shaded 

 with brown .............. 4. 



5. 



DD. Fls. 2 in. or more across 

 (sometimes less in Nos. 8 

 and 11). 

 E. Color blue ................. 6. 



EE. Color white ............... 7. 



EEE. Color white or yellowish, 

 but spotted with purple 

 or brown. 



F. Middle lobe of the label- 

 lum dilated, rent form. 8. 

 9. 



FF. Middle lobe slightly di- 

 lated, truncate or emar- 

 ginate. 



G. Apex emarginate or 

 %-lobed .............. 10. 



11. 

 GG. Apex truncate and ob- 



scurely mucronate...l2. 

 FFF. Middle lobe shorter than 



the sepals, flabelliform.rs. 

 cc. Raceme dense, cylindrical: la- 



bellum without lateral lobes . .U 

 BB. Lvs. semi -terete and deeply 



channeled, pointed ............. 15. 



, r . . 16. 



BBB. Lvs. terete ....................... 17> 



AA. Labellum not spurred ............. JJ.' 



20. 



1. Cffirulescens, Griff. Stem 1-2 ft. high: 

 long, deeply channeled, truncate and 2-lobed 



caerulescens 

 parviflora 



spathulata 



lamellata 

 Boxalli 



caerulea 

 Denisoniana 



Bensoni 

 insignia 



tricolor 

 Boxburghii 



limbata 

 Parishii 

 densiflora 



Amesiana 



Kimballiana 

 teres 



Sanderiana 



Ivs 5-7 in 

 at the apex:' 



VANDA 



racemes many, slender and'pendulous,each bearing about 

 12 fls. : fls. 1 in. across; sepals and petals obovate, sub- 

 acute, undulate or twisted, pale lilac-blue; labellum 

 shorter than the sepals, middle lobe cuneate-obovate, 

 with a delicate 2-lobed tip, violet with fleshy dark blue 

 ridges, side lobes small, dark blue. Spring. Burma. 

 B.M. 5834. F.M. 1877:256. G.C. 1870:529. -Color varies 

 from blue to nearly white. Var. B6xalli, Reichb. f. 

 Fls. pale violet or nearly white: disc of the labellum 

 deep violet with white lines on the sides. B.M. 6328. 



2. parviHdra, Lindl. Stem 4-6 in. high: Ivs. strap- 

 shaped, 4-8 in. long, unequally obtusely 2-lobed: ra- 

 cemes erect, many-fld.: fls. small, yellow; sepals and 

 petals obovate- spatulate; labellum shorter than the se- 

 pals, middle lobe obovate, dilated, truncate and 2-lobed 

 at the apex, yellow below, white above, spotted and 

 dashed with purple and having thick fleshy ridges. 

 Himalayas. B.M. 5138 (as Aerides Wightianum). 



3. spathulata, Spreng. Stem 2 ft. high: Ivs. 2-4 in. 

 long, obtusely 2-lobed: peduncle robust, 12-18 in. tall, 

 few-fld.: fls. 1% in. across, golden yellow; sepals and 

 petals oblong-spatulate, flat; labellum as long as the 

 sepals, clawed, side lobes very small, broadly obovate, 

 middle lobe sub-orbicular, obscurely 3 -fid. Ceylon, 

 India. 



4. lamellata, Lindl. Lvs. channeled, leathery, ob- 

 liquely and acutely bifid at the apex: fls. pale yellow, 

 stained with red; sepals and petals obovate, obtuse, 

 undulate, the lower sepal larger and somewhat incurved ; 

 middle lobe of the labellum obcuneate, retuse, auricu- 

 late, having a pair of red elevated plates and 2 red tu- 

 bercles just below the apex. Aug.-Nov. Philippines. 



5. B6xalli, Reichb. f. ( V. lamellata, var. Bdxalli, 

 Reichb. f. ). Stem tall, with long recurved Ivs.: raceme 

 longer than the Ivs., bearing 14-20 fls.: sepals white, 

 with the lower margins of the lateral pair sepia-brown; 

 petals white, with violet streaks which are also found 

 on the sepals, pandurate with large lamellae and square 

 auricles, mostly lilac. Nov., Dec. Philippines. G.C. 

 II. 15:87. Gn. 19:574. 



6. cserulea, Griff. Fig. 2636. Stem 1-2 ft. high : Ivs. 

 rigid, linear, 6-10 in. long, obliquely truncate and 

 toothed at the tip: raceme 1-2 ft. long: fls. 3-4 in. 

 across, pale blue; lateral sepal obovate; petals broadly 

 obovate, clawed; labellum less than one-third the length 

 of the sepals, dark blue, linear-oblong, side lobes small, 

 rounded, middle lobe with 2 thickened ridges. Late 

 autumn. India. F.S. 6:609. I.H. 7:246.' Gn. 21:254; 

 31, p. 566; 47, p. 145; 50, pp. 59 and 418; 52, p. 410. 

 R.B. 17:265. G.C. III. 3:41; 7:17; 11:272. Gng. 3:135. 

 G.F. 3:77. A.F. 6:685. F.R. 1:371. R.H. 1881:290 (var. 

 grandif/ora). This is considered to be one of the best 

 species in cultivation. The fls. are often tessellated. 



7. Denisoniana, Benson & Reichb. f. Stem short: 

 Ivs. linear, 6-10 in. long, recurved, deeply notched at 

 the apex: peduncles short, stout, bearing 4-6-fld. ra- 

 cemes: fls. white, 2 in. across; sepals and petals waved 

 and twisted, the lateral sepals broadly obovate, falcate; 

 petals clawed, spatulate; labellum longer than the se- 

 pals; side lobes large, subquadrate; middle lobe pan- 

 duriform, with 2 orbicular, diverging, terminal lobes. 

 Summer. Burma. B.M. 5811. I.H. 19:105. F. 1869, p. 

 250. G.C. II. 24:105. A.F. 6:607. 



8. B6nsoni, Batem. Stem about 1 ft. high, very leafy: 

 Ivs. linear, leathery, 6-8 in. long, obliquely toothed at 

 the apex: fls. 2 in. across, 10-15 in a raceme, 1-1% ft, 

 long; sepals and petals obovate, obtuse, clawed, whitft 

 outside, yellowish green with numerous brown dots in- 

 side; labellum violet, with white spur and side lobes, 

 middle lobe terminating in a reniform, bifid apex. Sum- 

 mer. Burma. B.M. 4612. F.S. 22:2329. G.C. 1867:180. 



9. insignis, Blume. Stem erect: Ivs. linear, 10 in. 

 long, apex with 2 or 3 teeth : raceme rather short, 6-10- 

 fld. : fls. 2-2% in. across; sepals and petals obovate, 

 fleshy, the petals narrower, ochraceous brown, with 

 darker brown blotches inside, almost white on the out- 

 side; labellum pandurate, the apical lobe being broadly 

 reniform, concave, white tinted with rose. Summer. 

 Malaya. B.M. 5759. Gn. 25:168. -Var. Schroederiana 

 has yellow fls. with a white labellum. Gn. 25:168. 



