Chobijn. IMIACK.K. ;;7 1 



■ Pistil of a single carjx'l on a small rujiulatf disk ; ovary jjlolmlar. with » psir of ai«r«ii<iiDf( 

 ovuU's; sUlc .siipraLasal. jlavollate , slignia sulH-apitato. Friiii j;]..!-!.*.. jit-a i.h«|«N|, ihiu. 

 ilnipaceuus, a narrow layer of |iiil|i lMaw(;cn lli« snioutli (>|iii'ur|i nn<l ■ part liintMit like 

 endocarp ; seed glolmiar, witli a tliiik cruslaccous u-ma. ranipyl..ir..|K,oji ; finbrvo aliutwt 

 annular in a vtrv thin stratum of llesliy all>umen; cotyledonii oval, ratiier H«»hr,'luui;itucli- 

 nally eonvolulf-inf-ilded. Simple-leaved slirul). 



TiMitK III. AMYKIDK.K. Slirul.s or tn-es, l»aIsatiiic-resiiioiu<, with liiTtnnptinMlita 

 or polygainoiis tlowers, and a solitary carpel with a teriiiinal wssjle hti^-nia. OvuIcm 

 a pair, collateral. Eml)ry<) straight, with very thick cotyledons; no albumen. 



7. AMYRIS. Calyx 4-toothed, jiersistent. I'etiils 4, imbricated in tbo bml. at b-ny^h widely 

 s|)roading. Stamens 8, those opposite the |)etals sliorter. Stigma iuiu>ib< nr i>ulw<'««ile, 

 depressed-capitate. Drupe globular, with thin tlesli and chartaeoous puUmen, l■M•4•<ll^d. 



TitiHK IV^ ArUANTIE.K. Trees or shrubs, aromatic (fragrant with v«jlatil«' tiil), 

 with hormaidiroditc flowers. Stamens often 3 or 1 times as many as j«-talH or 

 somewliat iiidctinitely numerous, then disposed to be irregularly iMdyadelphoun. 

 Pistil of few or several cells or carpels completely combine<l, ImjIIi a.s to ovary and 

 style (the latter deci<luous) ; ovules not rarely several in each ct-ll. Fruit baccatw 

 and corticate ; seeds destitute of albumen. Leaves 1-several-folioIate. Wholly 

 of the Old World. The familiar genus is 



8. CITRUS. Flowers 4-8 (mostly .5)-merou8. Calyx cupular. I'etaU narr.wly ..bb.Mg. 

 thickish, imbricated in the bud, deciduous. Stamens '20 t<i CO, iti.M-rteil amund a strong 

 annular or cupular disk. Ovary several celled and several ovules in ea<h cell. Kmlirru 

 straight, with short radicle and fleshy CDtyledous; in cultivation not rarcdy two or ni"Tv 

 embryos develuped in each seed. 



1. THAMNOSMA, Torr. & Frcin. ((-)a;/io?, a bush, ,Vr//,), scent or had 

 smell.) — Rue-scented low-shrubby or nearly herbaceous pustulat«'-dott»'<I phuitii, 

 with small simple sessile alternate leaves, and .somewhat racemiform inflorescenre 

 at ends of rigid branches. Petals yellowish or purplish-tinged. — Fn-m. Hep. 

 31.'] ; Torr. Pacif. H. Hep. iv. 7.'3, t. 3 ; Benth. & Hook. Gen. i. 28H ; Ilrew. & 

 W.tt>. Hot. Calif, i. 'JT. Riitosma, Gray, PI. Lindh. pt. 2, l.')8. 



T. montana, Toru. & Fke.m. 1. c Slimbby, l)roomlike: rigid branches pn^tul.ite. largely 

 leariess: leaves very small, linear or broader, few<>r deciduous : petjils lialf incli long. m<w(ly 

 erect, purple : filaments and .-^tyle filiform, the latter exserted : ovary and capule didyniotui. 

 almost iiifollicular at maturity, raised on a slender l>ut iKcasionally short stiiie; w<'ds few or 

 by al)ortion solitary, somewhat cochleate-reniform, the coat nearly snnMiih ; cotyli'dnnn 

 linear. — Desert-region of Arizona and adjacent borders of Ttah and California; first roll. 

 by Fremont. 



T. Texana, Tokh. Herbaceous from a woody !i:i.>*e : stems slender, oroct or fffireading. a 

 foot or less iiigh, leafy: leaves filiform linear, half indi long: |H'tals 2 linen long, ovato- 

 oblong, spreading, jiale greenish-yellow or whitish or jmrplish outside; st\le not cx.*<Tt«>d ; 

 8ti|)e of dee|dy obcordate fruit very short or hardly any ; seeds s<'veral, ghibuhir reniform, 

 muriculate-papillose ; cotyledons oblong. — Bot. Mex. Hound. 42; Brew. St. Wat* 1 c. ; 

 Coulter. .Man. Kocky Mt. Keg. 4.'). /iutosma Tfrnnn, Gray, 1. c, Con III. ii 144, t. 15.'.. &. 

 PI. Thnrb. 29S, .304.— Rocky hills, Tex.as to S. Colonulo and Arizona ; first ell by /<<r/nii. 

 Jin: (.\dj. .Mex., (ire;rj, &c.) 



2. CHOfSYA. II HK. (J. /). Chois;/, Genoveso InUanist.) — llninching 

 shnihs of Mexico and ;i<ii;ic.iit .\rizon:i. glandidar-puncfate and aromatic, mhiu'- 

 what pubescent, with cliielly oj)posite palmately 3-'.t-foliola«»' l<>ave« and M'K»ilo 

 leaflets, :ind rather showy white or <ream-<'oltired Howers somewhat umlndlately 

 cymo.se at the summit of leafy branches. — Nov. (ien. & S|m'c. vi. 1. t. /ilS 

 (gyuoecium iucorrect) ; DC I'rotlr. i. 72 i (where char. •* ca]M.ula i-rostrata'* 



