DRYOPTERIS 



mdllis, Kuntze. Lvs. 1-2 ft. long, S-12 in. wide, bipin- 

 natiad, the pinnaj cut into bluut lobes; lower piuniB dis- 

 tant from the others aud somewhat shorter ; surfaces 

 Hnely villose. Trop. regions of both hemisplieres. 

 Probably several species are confused under this name. 



PUUppinfiiisis, Baker. Lvs. 2-3 ft. long, 12-18 in. wide, 

 bipinnatifld, smooth, with a naked raehis; lower pinnaa 

 scarcely smaller: sori midway from midrib to margin, 

 with firm, smooth indusla. Philippines. 



L. M. Underwood. 



DUCHfiSNEA. See Fragaria. 



DUCK-WEED, Lemna. 



DUCKWHEAT. Some years a«o, as 

 a man in New England shot a wild du^ 

 crop found strange seeds. These seeds 

 and the flour from the grain was found 

 pancakes. He increased his st."k t.. 

 busliels. The grain was offri, .1 1:, -.■..'.- 

 wheat. It seems not to h;n( I 1 i i 



the : 





tlogU 



Itt 



Tartarian buckwbuai. J' ■./.:/. i/hiul l\i!,i,uinii. 

 an Asian grain, which has been known in this country 

 for some time. It is earlier than buckwheat, but is very 

 similar to it. See JBuckivheat and Fagopyrnm. 



DDDAIM MELON. .S. < Cucumis. ^' ^' ^' 



DUFOUR, JOHN JAMES. A Swiss vigneron, who was 

 at tlu' lit-:ul of ;i ('..l.,iiy to grow the wine grape in Ken- 

 tucky. :nid til,- :iiitli,,i- .,1 "Vine Dresser's Guide," pub- 

 lislieil in ( iiM iii!i:i:i ::i \-:i\. The Kentucky experiment 

 failed, :uhl : ,. . j .i settled in southern Indiana, 



onthel.:ii,l river; and this settlement is 



nowthrrii .. ilireDufour died in 1827. This 



l)Hli!t I I i-lit out the merits of the 



A I' , aud thereby did much to es- 



tai , , iilture. For detailed account 



ol i[H i'l; ' 11- Ml I i; r associates, and the results of 

 their Hoik. Me iiaiky, Evolution of our Native Fruits, 



DUGUfiTIA (prob.ably made from a personal name). 

 Anoiificew. A dozen South American trees differing 

 from Auona in technical characters, particularly in the 

 imbricated petals, which are wi(le-s|. reading in flower 

 (in AiK.ua the petals arc valvate). D. longiJ61ia, Baill. 

 (AniDvi lomiifuli,! . Aubl.), is a small tnc: lvs. oblong- 

 acuMiiuate, uuicr"uate anil smooth : lis. axillary and 

 stalked, the 2 s,.rirs ,,f p.-tals murl, .ali!;,- : inti.roM'pnce 



uuthe 



t, but 



DULICHHTM (old Latin name). Cyperdcece. One 

 perennial species (D. SpathAcenm, Pers.), in eastern 

 N Amer Grass-like with terete leafy culms '> 3 ft, 

 till gro vs u ponds ind swale Has been offere 1 by 

 oUecto a a 1 og plant 



DUKANTA (ifter Castor D rante phvs c an and 

 bota till ) I / About 10 spe es of 



DYPSIS 509 



AA. stems with a few pricklt's or spines. 

 ElUsla, Jacq, This is at least horticulturally distinct 

 from the above by reason of the lighter color of its fls,, 

 but it has been lately referred to B. Plumieri. B.M. 

 1759 shows the lower half of each lobe white, and a few 

 short spines on the stem. It adds, "two kinds [of 

 Durauta], one with thorns and one constantly without, , 

 are * ■'' * cultivated. The lvs. of the smooth are larger 

 and more coarsely serrated, and- the branches more 

 rounded than in the prickly Duranta." \y_ jj_ 



aria ; also species 



DUTCHMAN'S BREECHES. Dicentra CucuUaria. 



DUTCHMAN'S PIPE is AristolocJtia. 



DUVAUA. A synonym of Sehinus. 



D'i'CKIA (after Prince Salm-Dyck, German botanist, 

 aud author of a great work on succulent plants). 

 Broineliih-ea-. About '>7 spei-ies of succulent plants 



from S--111I1 Aniiri-a. - -aL.iI r-i-.-nililini,- century 



plant-. 1 :'- ■ I " - il. , aiMl lluwering 



regnia- , ' . . , . :,i,,i ihr |vs. form 



rarely culii-.alc.l in l'l..n.la au.i ( '..Uluiliia, aud iuafew 

 northern collections. The fullowiug have showy yellow 

 fls. Latest monograph in Latin by C. Jlez in DC. 

 Monogr. Phan. vol. 9 (189C1. 



A. r..:''-'-- .--' ..'- ..,.,,,■', '-,-,'-.' '.. ! ;,■ panieUd. 



altis.-i;:ii, 1. . 1. - ■ margin: floral 



bran- : I ii-au the fls. Braz, 



Bakc-i- - I- III --! Ill- 'I, III. ,- i.ii />. encholirioides, 



i-li--,i lis uir liiaments. Beyond 



I, 11,1- If.-.- /', „/^,-,-s!»m, while in 



t;i-..wii t..u.-tlii-r about a twelfth 



lie i.lituM- in Liudley's plant, but 



Mez. which IS ili-iiii-ui-l,.- 

 the tube they an- tr.-,- m 1I, 

 Baker's plant. tle-\- an- t,M-' 

 of an inch. The .-Jpals an- . 

 acute in Mez's. 



AA. Inflorescence not branched, a raceme or spike. 



B. Fls. with scarcely any pedicel; filaments forming 



a tube. 



rarifldra, Schult. Lvs. with small spines on the mar- 

 gin, shorter than in D. altissima : sepals not emargi- 

 nate at the apex : upper sheaths of the scape shorter 

 than the internodes. Braz. B.M. 3449, B,R, 21:1782, 



c, Fls. loosely disposed, erect. 



gemellaria, Morr, This is the plant which Baker calls 

 1>. siilphiirea, not Koch's plant. 



cc. Fls. more densely disposed, spreading. 



sulphiirea, C. Koch, not Baker. Lvs. with small spines 

 at the margin: sheaths of the scape longer than the in- 

 ternodes, the higher ones entire: bracts lanceolate, the 

 lowest conspicuously longer than the pedicelled fls. : 

 blades of the petals wide and longer than the stamens. 

 Brazil. -w. M. 



DYER'S -WEED. Bcseda Luteolu. 



DtPSIS (obscure name). Pa I iinln,,.. trilie Arecete. 



Perliai-- liiill' ;i -i-- 'I'll ■ i-iTi, - .( M.-HJii-.i-rar l-alms that 

 have I-' . :-- --.:,-•,- I :i- i. - Ml. They 



areall - ' -''■■ . , h •, : . - . i 1 - ■ - 111-. Lvs. 



ones confluent: sheath short: spadices long, loosely fid. : 

 fruit small, oblong or ovoid, straight or curved, oblique 

 at the base. 



No species of Dypsis are common in cultivation, as 

 they possess but "little beauty. They are among the 

 easiest and quickest to germinate. All of them require 

 a stove temperature. J). Madagascarifusis, Nicholson, 

 is also known as Areca Mndagnscarii^nsis, Mart. D. 

 pinnatifrons. Mart. (.4. gracilis, Thou.), is one of sev- 

 eral plants that have been known as Areca gracilis. It 

 is a pretty palm, now grown in large quantities by some 

 dealers. Jared G. Smith and G. W. Olives, 



