■i-26 Sali(.'ace.-e. 



c Capsules slahiMins ; leaves 



d (.Hiliiiis-laiieeolale. aeute at apex S. balsai:;if era. 



d" Jjinear-laiieeiilale : branclilets loni; ami pendeiil S. Babyloniea. 



d^ Laneenlale tn olWaiieeolate : hraiielih/is nut pendent. 

 e (;lal.r(.ns 



I'.riiiiit nr letldisli yidlow" : h'a\i'^ i;lanei)us In.nu'atli S. vitellina. 



Liulit brown ; leaves silkv pnliesceiit S. alba. 



e' Brewnish pubesi-eut S. Missouriensis. 



c" (^'apsiiles liair>"; style slant; lc>a\es ,i\ aie-laneeolate' \i< iddnn^-, aenie 



(Jlalii-.ius ami ?;laneons beneath; beanehlets nsnally glabrous; pedicel nf ,i\arv shoider 



tlian tile seale S. discolor. 



I'nbeseeiit biaa'alli; bianeldets pnbeseent ; iiedieid of o\ar.\" leimef iliaii seale. 



S. Bebbiana. 

 Fui- -s/M e/e.s- Sir j>i>. 7-/-.''.)' ((/([/ Ihc fulh.nrliitj : 



Balsam ^^'ILLl>\v. s<i]i.r Jmhu mi frra Ban-. A sjieeies of bofeal ilistiabnthtn laniiin.a: 



from aliont tlM> laiilune of Mt. Waslnm;bui iioid liwai'il ami nsnally sbrnldiy. bnt in the 



vieinily of Ft. Keiil, ^Ir.. has been fonnd lo allain the lieiubt of Uo ft. with tiaiulc 12-14 in. 



in diam.arei-. It is ehafaetei ized :ts l■ollo\^■s : 



Lrarrs rdliptie te> o\a1e. ij-4 in. loim-. fi-mmli^l in- sidieordaie al base. usuall.\" aeaile or 

 obtnse at a|)e.\, liiiely .uiamlula I'-sei'va te. thin at first. linall.\" i-i,L;id, ,L:labrons. daid\ .lireiai abo\'e. 

 palei'. ^l.aneons and laoininent l,\" reiieulated bem'.ath; sliiailes usually none; petioles slendef 

 1., in. oi- less in leiiLith. /'/ojrei-.s- ■ .anieuts expanding with the lea\'es on leafy-bi'aeted 

 bvanidilets. the stamlnali* dense; stamens 2. with fie(> tilamenfs ; pistillate father loose; scales 

 rose-^'ohnfd, \-illons. iiersisieiit ; si.\-h' \-er,\- shori. J'riiit eayisnles naia-eiw-i.n'oid, lon^-stalked. 



WifiTi': \\'ii.i,(iw. Siili.r nihil /,. A hir;;e Fairopi-an I ree willow sparingly es,'a|ied in 

 this eiMinir.x ,and ililTia-s from lie' N. ril'llnni nniinl.\" in ha\din:' more asli.\ ■^V[]y ami silky 

 inthesciait lea\"<'s. wlddi ci\"es a whitish elTeet \n lis fotiai^e. .and mori' briiwnish branehh-'ts. 

 ^^ar. iiirnl'ii Koeh.. also oeeasionall.\" found, has inoie ^labrr)us dtill Iduisli ui-eeii lea\es and 

 oli\e branehlets. 



Bici'.n Wlii.iiM-. s,ili.r lUlihhiiniii Sars. IN. rnxhnln llieh.i. A l.arse shrnb m' small bushy 

 tree. oeensioiiall.\- !!."■ f I . in lieiiiht. with a Irnnk d or .S in. in diametiu-. ranuiii^ from IViinsyi- 

 \atiia to the .Vfi'iie reiiions. and fi'om llu' St. Lawrenee Ui\-er to Alaska, and in botanienl 

 cliaraeters is dose lo N. r/i.veo/or ( ,vre j>ii. .''.'-,''.; I bnt dilters in lia\i!r~ lea\es nnsall\" toinen- 

 tose (It imbes.riit bene.ath; pedieel of lie' o\ar,\ longer than tin' seale and branehlets pubes- 

 cent. 



THE POPLARS AND COTTONWOODS. Gi-xus POPl'Ll'S L. 



Trees of usuall.x" l;ir,::e size, r.ajiid m'owih. \\irli seal.\ ;ind nsuall.\" resin-e(.iated lunls and 

 bailc pale ;it hrst but ftirrowed ^^dlen old and rich in tannin. 'r]\e sticky resin of these buds 

 is i;atlMa-ed by hone.\- bees for sealiuL;- (a'e\-iees in their lii^a-s. the tnateiaal which bce-kei^pers 

 call " prop(dis." -Vhont twcnt.^-hve species are ree-o;;nized of which ajiproximalely half are 

 natives of Xiudh America ran.siirs from the Atlantie' to the I'acific and from the Arctic Circle 

 to the Iroiiii's. 



The Botdars are the oldest known dicotyledoiions |danrs, bciiru represented anuuri,' the 

 fossils of the caetineous formations. 



[.i'(ir,s lane.-o\.ate lo oibanlai' or deltoid, involule in the bnd. nsnall.\ with Ions; st;\lks 

 mofi' or less hiiei;ill.\" eom|iressed eausiim' their eas.\- ti^italion li\- [he winds; siijutles small 

 and c;idncons; Inaineldets lerele or anL'led; winter bnds |iointe(i. nunc or h'ss ri'siii-i-oa ted 

 and eo\eicd with seveial thin i iiilo ie.a iimI scales. riniri ,\\ e\|iandiiiL; with or bid'ore the leaves 

 in stalked droii]iiii,L: ;iimails whidi ehnmaic while tnalnrim:. with ihin oho\ate stipitale 

 fimbi-i;iled cadiicons scab's, more erowaled (Ui llie sl;iminale ;imeiits; jiistilkaic amiaps with 

 liroad cnii-shaiied. usn.all.\- obliune. sli|iiiate ami pia-sistem disk; slaniens d-do. with short free 

 lilaiiii'iils; aulliers piir]disli; o\;ir.\ sessib^ with shoia si\le .and emire diiiit.ale or broadlv 

 U-ddohed sit.miia. I'niil matni'in?; ofi.ai before ihe full .urowth id' the leaves, in nsmally 

 droo|.iliu iaciaues .and with siile^lobosc to ,.\-,nd-oldoim eaiisnies subtended by the |iersistent 

 disk and deliis.'.uit by '-'-4 recairved vahes; si'cds simill. brown and ]no\ided with abundant 

 eollon\ hairs. 



The name is (he timient I,:itin name of llie I'uphir. 



Ki;v d'i> d'lii: si'i:cii:s. 



a Voids coated Willi a slicl<\- resin; lea\es 



b r.roadl.\- delt.od. acnie or acuminale al apex 



\'er.\- w-ide-cordale lo I niiicale ,al base ; buds kar-e P. deltoidcs. 



\""r.\ W ide-iaille,ale to tiunc:lle .al lace; Inids e,mi|i;lrali\ el.\ small. 



p. dilii + ata. 



b' i;iaanbicd,aiiee(d.alc. ei'cen both sides. lon;;-|Hiin I ed p. acuminata. 



b' (dvated.aneeolale, yreeu bolli sides, sliorl-peliolalc P. angnstif olia. 



