CHE REFERENCE LIBRARY - ZetaTalk

264 THE NURSERY-MANUALcactus an(l echinocc’reus, a different method is preferable. Theheucl of thcb plant is cut away with a perfectly smooth transverserut. ;2 stock is ~.llost~n that. has about the same diameter as thecion, and it is gi\*tln a smooth transverse cut. The two flat surfacesare then pressed firmly together and held in place by tyingthtm \vit!l a cotto: or c,tiliir soft cord. It is essential thatclean instrurnt~n~ts ltci used to prevent inoculation with diseasegerms.A m~rntwr of tllcl l~prigllt-growing species of cereus have beenllscti S1lwt’SSfllll~’ ff,l’ !&PCkS, mi therm WC-ms to be no limit to theI~UI~~~WI~ of sl)c~cic~s tllat rllt~y 1~ ertlployed. \Vhen it is desired toLa\*e the cioll a foot or n1c)rt’ higl1, good stocks may be obtainedfrom plants of’ thtb oltl genus ( ‘ereus, as L~~~rla,il’poc~~~~~~~.s stellatus,,~,t/dVt't't'f'tttS .~','r*]Jf'"fh Iis, L ~itl other sptv+s of similar habit. Thesesiock~ are p~&rai&~ fw use in grafting A por0cact~u.s j/ng&iformisand species of q~ipli~~llum ant1 rliipsalis, which normally grow in apendent tlirct~tion. M”hen only slmrt stocks are desired the abovemay 1~~ us~vl, i111({ :llso C’. ~OI’~~~OSUS, C. Borlplandii, ~S~‘IIJ,)~~CPT(“L(Sw!yc!iculu,s, S. nIrrc.l)orrrtltlicr, ;~nd 8. grandijorus. These latterplants iirc’ ~~t’;ll~-stt”ltllllecl wlwr~ :rllowecl t,o grow tall ; hence, theycannot be ustb(l for lligll grafts unless supported by a stake ofsorn~ kincl. ;\ll t llc3tl species art’ reaclily grown from cuttings,which shoultl INI sctrlltb\vhat longer than the stock is to be. Whenthe cutting is tlloroqlil>* rooted it slioul(1 be potted and kept ingood grov’ing cbontlition until a new root system has formed. It willthen be rea.dj. to rtveivt~ the &)x1 after having been cut back to thedesired height. - C~~~~~~IISP~ and adapted j’roT)l C. H. Th.ompson,Bd. 2132, Urcr. 1% It& 11. S. Drpf. Agr.sCaesalpinia. I,q ti itt iriosw.Readily propagutcrl by seeds which should be soaked in warmwater for sornc~ hours l)efore sowing ; plant in a bed of sandy soiland shade liglltly : pot oti whe. n tl le plants show the first true leaf.Sometimes increased by cuttings, which may not root readily ;put them in sand unrlcr glass.Cajanus (Pigeon Ptla). Lfy1~rrl~irlosf.P.Grown rckatlily front seeds ; in the tropics treated as an annualfor its e(liblc seeds. As a glasshouse subject, it may be grown fromcuttings struck in hat.