DEWBERRY 



475 



(var. roribaccus, Bailey), which is a stronger plant, 

 with wedge-ovate, jagged leaflets, long flower stalks, 

 targe flowers and leaf-like sepals. Pigs. 697, 698. (2) 



697. Lucretia Dewberry (X H) 



The Bartel type {B. irwisiis, Bailey), with stout, stiff 

 stems, straight, reflexed prickles, large leaflets with 

 simple teeth, and having the unopened buds surmounted 

 by a tip formed by the sepals which clasp around it. 

 {:t) The southern Dewberry (B.lrivialis, Michx.). This 

 has round, shrubby, trailing stems, bearing strongly re- 

 curved or reflexed prickles, glandular-tipped hairs and 

 bristles. The leaves are evergreen, leathery and 

 smooth, with numerous stout, recurved or reflexed 

 prickles on the veins and petioles as well as on the 

 flower-stems. It is represented in cultivation by the 

 Manatee and a few others. (4) The western Dewberry 

 (S. vitifoHiis, Cham. & Schlecht.). This has round, 

 woody stems, usually weak and trailing but sometimes 

 upriarht, the fruiting branches numerous, armed with 

 slender prickles, often rendering the smaller parts 

 densely setose. It includes the Skagit Chief and others. 

 Still another species, better known as the cut-leaved 

 blackberry, has been long in cultivation, chiefly for or- 

 nament. Its stems are armed with strong, recurved 

 prickles and its leaves are much parted and divided. 



The culture of the Dewberry is much the same as 

 that of the blackberry, except in the matter of training, 

 though it is thought to thrive better on light and 

 sandy soils than the blackberry. No summer pruning 

 of the canes is needed, although the old canes may be 

 removed as soon as done fruiting. Various meth- 

 ods of training are employed, the object of all be- 

 ing to keep the bearing canes off the ground, so that 

 they will not interfere with cultivation and the fruit will 

 be kept clean. For this purpose the single stake and 

 the wire trellis methods are best known. Tyinsr the 

 canes to stakes (Pig. 699) is perhaps the best method. 

 The fruiting canes are tied to the stake or trellis in 

 snring, being shortened to from 3 to 5 feet in length. 

 The voung canes are allowed to grow upon the ground 

 at will, or at most are turned in the direction of the row 

 if they interfere with cultivation. They remain in this 

 position during winter, where they can be very non- 

 veniently protected, and take their place upon the trellis 

 or stakes the following summer. 



The Dewberries have proved successful and profitable 

 with some and a failure with others. Different varieties 

 sliould be planted together to insure proper fecundation 

 of the blossoms. Their chief value lies in their season 

 of ripening, which is in advance of the blackberries. 

 Lucretia and Bartel are the most important varieties. 



For histo.y and botany, see Bailey, Evolution of Our 



Native Fruits; for culture, see Card's Bush-Fruits, and 

 Cornell Bulletins 34 and 117. Consult Blackberry, Lo- 

 ganberry and Bubus. fred W. Card. 



DIACEIUM {IJirniiiih and point; the stems are sur- 

 rounded by sheaths). Orchidueeie, tribe Mphh'ndrece. 

 Four tropical Amer. epiphytes, closely allied to Epi- 

 dendrum, with which they have been included. Differs 

 from that genus in the fact that the column and lip are 

 not united. Pis. showy, in loose racemes : Ivs. few. 

 sheathing : pseudobulbs slender. Culture of Epiden- 

 drum and Cattleya. 



bicomiitum, Benth. (Epidindrum bicorniitum, Hoo'ii..). 

 Pseudobulbs 1-2 ft. long, hollow, bearing dry sheaths: 

 Ivs. short and leathery : raceme slender, 3-12-fld. : the 

 fls. white, with small crimson spots on the 3-lobed lip, 

 fragrant. B.JI. 3332. C.C. III. 16:,337. J.H. III. 33:29. 

 — A handsome orchid, requiring high temperature. 



7). bidentatum., Hemsl. {Epidcndrum bid^iUatum, Liudl.), 

 of Mexico, has been listed in trade catalogues, but it is practi- 

 cally unknown to cult., and is probably not now in the Amer. 

 t™'*'- L. H. B. 



DIAMOND FLOWER. See lonopsidium. 



DIANfiLLA (diminutive of Diana). Lilidcecf. Tender 

 perennial tibrous-rooted plants, with hard, linear, sheath- 

 ing, gi-ass-Iike Ivs., often 2-3 ft. long, large, loose 

 panicles of blue fls. on delicate, pendent pedicels, and 

 great numbers of pretty blue berries, which remain at- 

 tractive for several weeks, and are the chief charm of 

 the plant. There are about a dozen species of world- 

 wide distribution. They perhaps succeed best in the 

 open border of a cool greenhouse. Prop, by divisions, 

 or by seeds sown in spring in mild heat. A few plants 

 have lately been imported, but the species are not ad- 

 vertised. Latest monograph by J. G. Baker, In Journ. 

 Linn. Soc. 14:574 (1875). 



A. Stems entirety wanting. 

 B. Anthers 1 line long. 

 Tasm&nica, Hook. Height 4-5 ft.: Ivs. numerous, in 

 a rosette, broadly ensiform, 2^ ft. long, %-l in. wide, 

 margined with small reddish brown 

 spines, that cut the hand if the leaves are 

 carelessly grasped : panicle very lax, sur- 

 passing the Ivs. 1-2 ft., with as many as 

 60 fls.: fls. pale blue, nodding, 1^-34 in. 

 across, segments finally refexed. Tas- 

 mania and Australia. B.M. 5551. 



Lucretia Dewberry. 

 Natural size. 



Tramine Dewberry 

 to stakes. 



BB. Anthers i/a lines long, 



0, reins of the outer perianth-segments rather distant. 



Isevis, K. Br. Lvs. !-!>< ft. long, 6-9 lines wide, less 

 leathery and paler than in D. eariilea and at first slightly 

 glaucous: panicle deltoid, the branches more compound 

 than in D. revoluta: outer segments of the peri.anth with 

 5 distant veins, inner ones densely 3-veined in the 

 middle third. Eastern temperate parts of Australia. 

 B.R. 9:751. L.B.C. 12:1136. 



