DELPHINIUM 



DENDROBIUM 



467 



Stem erect, simple or 

 u- or slightly pubescent, 

 Mil. rritid, and somewhat 

 IHi- i.i-t;ils sometimes pale 



24. cheilinthum, I 

 branched, 2-3 ft.: Iv 

 5-parted, the lobes ] 

 toothed: fls. dark bin 

 yellow, the lower <>i 

 rather long, straight or .soimnhat curved: follicles 3, 

 either glabrous or pubescent ; seeds 3-cornered, 3- 

 winged, not scaly. June, July. Siberia. B.R. 6:473. 

 Gt. 13:253. P.M. 16:258 (asU. magnificum). 



DDD. Seeds scaly. 



25. JormdBum, Boiss. & Hult. Fig. 688. Stem strong, 

 2-3 ft., hairy below, rather glabrous above : lower Ivs. 

 5-7-parted, long-petioled ; upper ones 3-5-parted, short- 

 petioled or sessile, all alternate : racemes many-fld. : 

 Hs. blue, with indigo margins; spur long, violet, biiid at 

 the tip: follicles 3, pubescent ; seeds scaly. June, July. 

 Asia Minor perhaps, but its origin is disputed. F.S. 

 12:1185. Vick's Mag. 2305. R.H. 1859, p. 528. -The most 

 permanent form for naturalizing. 



2G. Maaokistnum, Kegel. Erect, 3 ft. high, pubescent 

 or glabrous, branched above : Ivs. pubescent on both 

 sides, base often truncate or renifomi, 3-5-parted, the 

 parts serrate; petioles dilated at the base : peduncles 

 yellow-hairy, with the bracts often inserted above the 

 base: fls. in loose panicles, sepals blue, K as long as the 

 spurs; petals dark violet : follicles often glabrous, % in. 

 long; seeds small, distinctly scaly. 

 July. Siberia. Gt. 344. 



27. hjbridum, Steph. Stem 3-4 

 ft., pubescent above : 

 what bulbous : Ivs. 5-many- 

 parted ; lobes linear ; petioles di- 

 lated and sheathing at the base : 

 racemes dense : fls. blue, lower limbs 

 white-bearded ; spur straight, 

 longer than the sepals : follicles 3, 

 hairy; seeds ovate, with transverse 

 scales. June-Aug. Mountains of 

 Asia. R.H. 1893, p. 258 ; same cut 

 in S.H. 2:282.— There are many 

 double and semi-double vars. of 

 this type. 



Var. Bdrlowi, Past. Very large, 

 semi-double fls., deep bliie, with 

 brownish center. A supposed hy- 

 brid with B. grandiflorum. B. R. 

 23:1944. Int. 1892. 



D. c(srulcsce7is,Freyn. A fine Asiatic 

 spoi-ios, with single and double forms. 

 P il. lG:'r.s.-7;. Wheflerii is listed in 

 tile tr.ide, but is of unknown origin. 

 K. C. Davis. 



DEMAZfiSIA {Dcsmazeria). 

 Grit tnitKiC. Annuals or peren- 

 iiiiUs, with narrow, involute leaf- 

 blades : spikelets peculiarly dis- 

 tichous on two sides of a 3-sided 

 rachis, many-fld., sessile, i 

 of the lower spikelets pedicellate. 

 Four species known. Mediterra- (X J^S.) 



nean and S. African. 



sicula, Dum. {Brizopilrum Sicuhtm, Link.). Spike 

 Grass. Fig. 689. A smooth, erect annual, 8 in. to 1 ft. 

 high: Ivs. few: panicle spike-like, 2-3 in. long ; spike- 

 lets ovate to linear, 8-20-fld. Mediterranean.— Fre- 

 quently used for edging. 



DEMERAEA ALMOND. Consult Terminalia. 



DENDKOBIUM {tree and life: they are epiphytes). 

 Orch (ddceo!, tribe Epidindrece. A genus containing many 

 species of great horticultural merit. Flowers racemose, 

 fasciculate or solitary : perianth usually spreading; 

 labellum nrti.-ul.it.- ,.i- .oiiuate with the base of the 

 column; ccilnniii sli..it, s.iiiiterete; base produced con- 

 spicuously; iioUiiiia 4: stilus cane-like, in some species 

 deciduous, so that ilurinu^ tlie ri-sting season the plants 

 appear like a grouj. of ilmd stirks. The species (more 

 than 300) are distril.iUr.l tlirmi-ii the tropical countries 

 of the eastern liiiiiis|ili, ri-, Australia, Japan, China, 

 India and the Philippine Islands furnishing a large 



639. Demazeria Sicula. 



number. They are particularly abundant in parts of 

 India. No species are known in Africa. The term 

 pseudobulbs has been used throughout this article for 

 the sake of uniformity, but these members are very 

 variable in the genus, ranging from very large (several 

 feet long) to very small and thin. The flowers are of 

 many sizes, forms and colors. Some of the species re- 

 semble Epidendrums, Cattleyas, and other genera. 

 Oakes Ames. 



The growing of most of the commercial Dendrobiums 

 can generally be understood and accomplished in observ- 

 ing three steps: (1) The season of rain, that produces 

 the abundance of growth. (2) The season of colder 

 temperature, to ripen the wood. (3) The dry season, pro- 

 ducing the flowers. 



In the selection of varieties, there are very few that 

 will not respond to the treatment suggested by this 

 scheme. D. Ihrijsiflomm, finibriatiim, .chrysotoiiim, 

 Farmerii, and all varieties of this group, respond most 

 generously to this treatment in the warm glasshouse. 

 There are no plants more beautiful in the orchid family. 



The soil required is equal parts of clean peat and 

 moss. Fix the plants very flrmly in pots or baskets. 

 While growing, an abundance of water must be given, 

 with syringing on all fine days. When the growth is 

 well made and developed, then comes the season of rest, 

 and water can be withheld gradually, until finally none 

 is given. Commercially speaking, Dendrobiums can be 

 flowered in any ordinary glasshouse, and with only 

 partial shade. Another method is to give more shade at 

 the growing season, and more air at the resting period. 



The propagation of these species is by division of 

 the growths, either in the resting season or the starting 

 of the growing season. Pruning is not to be practiced, 

 as, being of slow growth, they require the leaves for the 

 furnishing of the plant. Shading should be adopted. 

 With all Dendrobiums, care should be taken not to over- 

 pot. Grow in small pots or baskets, so as to confine the 

 roots. D. Dearei may he grown continuously, with- 

 out rest. 



The commoner conservatory Dendrobiums, as D. 

 Phalcenopsis , D. Aiiisworthii, etc., are propagated by 

 laying the stems flat on baskets, attaching them firmly 

 by means of wire. Pruning of these varieties was once 

 practiced extensively, but when there is plenty of 

 growth the stem and flowers can be cut at the same 

 time; this adds more beauty to the flower. Z>. nobile 

 and i). yf^ardiiinum are easy to grow, only care should 

 be taken not to be too severe on all classes of this sec- 

 tion, after the growth is made, until midwinter. They 

 bloom best when the late autumn sun partially ripens 

 the stems. See OrcJiids cqlin Ogston. 



1; albiflorum, 





10; albo sau.,'uiii m Is n i inin is, anosmum, 68; 

 Aphrodite, 61 i pii iim ii 11 i\ iiin, 10; attreujii, 



50; Balleanuin 1 1 il ii m i Inirbatuliim, 19; 

 Bensoniae, 67 1 i tin, 22, Boxallii, 



61; Brymeiiii Cahtnhis, 30; 



capilhpes, 41 ilumi, 54, C/lJ!/- 



«o<is,27, chr\ III I ( ooksonianum, 



43; crassinode oo, up i nticeum, 74, cru- 



entum,33, cruinenatum i iii il u mi 2, crystallmum, 

 65; Dalhousianum, 31. lii\ i mi Is Dearei, 3, densi- 

 florum, 8; Devoniannni i \ nilnnit 20* Draconis, 



37; erythroxantliiini 1 I 1 i ii i rum. in 10; 

 Findleyanuni ti I i Tree- 



mami, 69, fii ni., 2b, 



giganteura i.. In mum, 



9; heterocaii ui I Mill II i mi 27, in- 



fundibulum, 36, JniHsiLiiimi 'I, 7 ipnni. uiii 4(1, Jen- 

 kinsu, 15, lasioglossum, 52, leucolophotum, 4, Lmawi- 

 anum,44, lituiflorum,69; Loddigesu,56; longicornu,,34; 

 Lowii,39, luteolum,50, MacfaiHnei, 20, micioph-yllum, 

 18, 68, McCarthije,70, xKHi/i^) wf 10 im snh-itum, 30; 

 nobile. i3, nobilius, 4 . bi itniii . il ituin, 25; 



Palpebraj, 5, Paiishii 4 /'i / / i I li ihrnopsis, 



23; Pierardi, 7-!, primuliu iiii 7. j I J, II ai 56, rho- 

 dopterygium, 49, Rutkcii jl, s il,iiliii„ui s, Schroe- 

 derianum, 23, Schroederi, b, secundum, 1, su.^vissimum, 

 17; sulcatum, 11, superbiens, 21; superbum, 68, thyrsi- 

 florum, 7, tortile, 47, transparens, 71; V'eitchiantim, IS; 

 Wardianum, 59. 



