48C 



DIMOKPHOTHECA 



teetb, pilose, the uppermost smaller and narrower: pe- 

 duncles terminal, nodding in fr. : fls. wbite above, pur- 

 ple or discolored beneath. Var. liguldsa, Voss (Calen- 

 dula Pdnr/ei, Hort.|, is a double form — the heads full of 

 rays— with heads white on upper side and yellow or 

 violet beneath. 



Seven species have been pictured under various 

 names in the Botanical Magazine — all perennials, and 

 worth importation. 



J), auraiitlaca, DC. Lvs. slender, entire: fls. yellow. B.M. 

 408.— i>. Bdrberioi, Haw. Perennial: fls. purple above, paler be- 

 neath; disk all purple, with corollas of 2forms. B.M. 5:o7.— 

 D. chrysanthemifolia, DC. Lvs. cut like a Chrysanthemiira: 

 fls. yellow, rovorsr. rc.Wi-ih, H,.-\r. -ms-D. cunedta. DV. Lvs. 

 strongly <ut tls s,,ii l.-t ,,r:iii:;.-, 1! M l:',i:i.— D. Ecklonis, DC. 



Differ 



strongly Vfi 

 />. nitdicuii 



pUsh. 



l.M. laSL 



II ii^ ^li[iiM.> -t,tii itiiil branches, and is per- 

 iiirMi-in:,' Hi ;ill TU wliite, violet-blue. and 

 II til.' I.,irk: thr .li.k ;izure-bhie. B.M. 7535.- 

 ,r, ,,,,i,„„i,Mia. Uaiv. & ,Sond. Fls. white, 

 g ;it the l';ise, and orange-brown on the back, 

 B.M. r,-2r,i.-D. Tragus. DC. Lvs. narrower 

 is, linf.'tr: fls. white, veined purple, the rays 

 base, reverse orange purplish, the disk pur- 

 W. M. 



DIOCLEA (after Diodes Carytius, said to be second 

 only to Hippocrates amongr the ancients for his knowl- 

 edgeof plants). Legumhiosw, About 16 species of tender 

 shrubby twiners, mostly tropical American, with delicate 

 trifoliolate leaves and blue, violet, scarlet or white fls., 

 sometimes nearly an inch long, and borne in clusters 

 which have been roughly compared to Wistaria. Calyx 

 bell-shaped, 4-(*iit, '2 lobes shorter and narrower, stan- 

 dard wider than long: ovarv nearly sessile; pod wide, 

 the upper sulnre tliii-kciied or 2-winged. The following 

 species is cult, in S. Ctilif., where it has a moderate 

 growth, shining foliage, and clusters of 10 or more hirge 

 fls. of a splendid scarlet. 



glycinoldes, DC, from Rio de la Plata basin, is prob- 

 ably the only species grown in European gardens and 

 in California. Fls. 1 in. long, bright scarlet, in racemes, 

 somewhat like Wistaria: will stand some cold. Propa- 

 gated by seeds, cuttings, or suckers, freely produced 

 on grown up plants. (Syn. Camplosema rtibicundum, 

 Hook. & Am.) F. Pbanceschi and W. M. 



DION. SeeBino,,. 



plies. If kept in the sun the leaves take on a reddish tinge, but 

 when grown in the shade they are always green. Flowers will 

 develop about the middle of June, but they should he nipped oflf 

 as they m<%ke their appearance, for they are apt to weaken the 

 plant. 



"The Dionsea has been grown successfully in a dwelling 

 house by a very different method. The plants were in a wide, 

 shallow dish, without any drainage, and simply placed, not too 



muscipula (XX). 



firmly, in loose live sphagn 

 Water w:\s given ever>- otli^-i 



DI0N21A (an unusual name for Venus). Drosericece. 

 Venus' Fly-trap. This insectivorous plant is one of 

 the wonders of the vegetable kingdom. See Fig. 713. 

 It closes its trap with remarkable quickness. The plant 

 grows wild only in the sandy savannas of North Carolina. 

 It is a perennial lierb.tbe lvs. all radical and in a rosette, 

 the spatulate portion being regarded as petiole, and the 

 trap as the bliide: t\s. good sized, white, in a bracted 

 corymb, borne on a leafless scape. It is allied to the 

 sundews, other famous insectivorous plants which are 

 also cultivated, but has about 15 stamens, a columnar 

 style, and seeds at the base of the pod. Many famous 

 naturalists have studied and written about this plant, 

 and it has a large special literature. At times it is sold 

 widely throughout the north, often at high prices, but 

 the plants are soon "worked to death." It is difficult to 

 keep it more than a year in the north, but it ought to be 

 furnished in large quantities at low rates, so that all the 

 school children may see it. It is mostly grown in con- 

 servatories associated with botanical institutions. 



"It is sf|,I()ni fh;it Ihiswondfrful little plant is seen in a good 



St''*'' "t" 'iili i\ ,ii ;,,;i ,11.. !, iiu-iii ,,r r rifter removal from its 



ti' ' ' ' " ■ '■■ L-r.,-iihouse is usually at- 



t' I ■ ■ iii^'to uusmtable condi- 



'1"'^ Ill . ' . !,■ -ir unfriendly soil. It 



<l<li-iii. ill ., , . , , ,y humid atmospliere. 



When till. ,.■,■ ■ ,:• I, , ,. , ,,. : .|,,,,-|,l;,,il,,l u;il „ 



siderablt.' ni ' •• • • • '.-,.: ,.■■, : ■■ , •',, ,; i.. : ' , I. il! 



pots, then smaller piei'es, and the upper layer is yiute tine. 

 Some chopped fibrous peat is placed above this, when the plants 

 are bmlt in, \vith live sphagnum moss used to fill the spaces 

 between the clumps, .\rranged in this way. it is hardly possible 

 to give them too much water, and they revel in abundant sup- 



muscipula, Kilis. li; 

 785. F.S. -6:260. Mu. 

 species. 



DIdON (Gi 



[described above. B.M. 

 Lie genus has only one 

 W. M. 



and egg; each scale covers two 

 ovul.- titi.l till- sci-ils are in pairs). Cycaddcece. Hand- 

 soiiir t"li:i::i phiiit^ suitable for warm or temperate palm 

 houses. 'I'lits i.ii.,. powerful order is nownearly extinct, 

 and til.' fiw nijuiiiiing species are of the greatest scien- 

 tific interest and also decorative value. J), edule has a 

 flat, rigid frond which is more easily kept free from 

 scale insects than C'yeas revoluta, the commonest species 

 of the order in cultivation. A specimen at Kew had a 

 trunk 3-A ft. high and 8-10 in. thick, the crown spread- 

 ing 8-10 ft. and containing 50 fronds, each 4-5 ft. long 

 and 6-9 in. wide. Both sexes make cones frequently, 

 the male cone being 9-12 in. long and the female 7-12 in. 

 The seeds, which are about the size of Spanish chest- 

 nuts, are eaten by the Mexicans. Many Cycads yield 

 arrowroot. This genus is said to be the closest to the 

 fossil forms of any living representative of the order. 

 The genus has the cones and twin seeds of Zamia and 

 i;ii.'i|ihal;irtus, with the flat, woolly scales of Cycas,but 

 uitliimt the marginal seeds and loose inflorescence of 

 till- latti r. Prop, by seeds. Culture same as Cycas. 



§dule, Lindl. Lvs. pilose when young, finally gla- 

 brous, 3-5 ft. long, pinnatitid, rigid, narrowly lanceolate 

 segments, about 100 on each side, linear-lanceolate, sharp- 

 pointed, widest at the base, rachis flat above, convex 

 beneath: male cones cylindrical, female cones ovoid. 

 Mex. B. M. 6184. Gn. 55, p. 365. Gt. 48. p. 157. Var. 



