X 



Key to the Faimilies Based Mainly I'i'iin Fluwebs. 



g" (,'alyx consisting of five sepals; stamens 



h Eiglit but four imperfect; fiowers in autumn. 



Hamamelis, in Hamelidaceae (p. i6b). 

 h.- Numerous; pistil solitary and 

 i .Single-ceiled ; tiaiil a drupe. 



Prunus, in Rosaceae (p. AM)}. 

 V Five-celled : leaves deciduous ; fruit 



j Indehiscent. a dry nut-like drupe altaclird lo a seed-leaf wliieli serves 



as a parachute Tiliacea; ( p. 4-i.S I . 



3- Dehiscent. .Ti-valved caps\ili.' ; leaxcs iipisisleut. 



Gordonia, in Theaceae (p. 449). 

 g^ Calyx 4— .^clobed : st.amens as niau\' as the jinlals and 



Alternate witli the petals whiVh ar.' wiilnly sprradiug. 



Euonymovis, in Celastraceae (p. 440). 

 Opposite the petals wliicli ai'e hood-liki' and eii\-.do]ie theni. 



Rhamnus, in Rhamnacese (p. 448). 

 f- Irregular 



g Lea\'es ])iuii;itely cnnipound or liiionipnund ; fiiiil a legume. 



Leguniinosse (p. 441 I. 

 S" Leaves paliiialely compound; capsule with large nut-like seeds; some flowers 



unisexual by abortion Hippocastanacete I p. 447). 



e'- Flow'eis pulygaiuous ; fruit a 

 f Samara 



g Winged all aiouud Ptelea, in Rutacese (p. 444). 



g- \\'itl] long (ilili<jue wing and bmaie in pairs. 



Aceracese t p. 44*> I , 

 f- Capsule containing a S(ditary scd : leaxcs pinnat''. 



Xaiithoxyluni, in Rntacese (p. 443). 

 f L»rupe in terminal op>en tbyrses 



Sapindus, in Sapindacese (p. 447). 

 e' Unisexual 



f ^Mostly di(.e<ious and occasionali.N' perfect; fruit a 



g Samai'a ; lea\'i'S pinnate.... Ailanthns, in Siniarubacese i [1. 444). 

 g- Small dryish druijes in teianinal thyrsc^ nv axillai-y paiiii-les. 



Anacardiaceae ( p. 444 ) . 

 g' Larger berry-like drupes in small axillar.\ clusters or solitary. 



Ilicaceai I [t. 44.% I . 

 f- iionmcious, in dense globose heads; le;i\es alterinite. simple and palmately 



veined ; fruit an akene Platanacese t p. 4.';7 ) . 



d' Ovary inferior ; fruit 

 e Drupaceous ; leaves 



Twice pinnate; styles and cells of ovary 4-.''i. 



Araliacese Ijc 4.oO). 



Simph'; styles .solitary Cornacese (p. 4.''illl. 



e' A pome. .Pyrus, Sorbiis, Crataegns and Anielanchier, in Rosaceae (p. 438). 

 c' United petals 



d Ovai-y superior; flowers perfect; fruit a 

 e Capsule with 



f Five cells and five valves. 



Rhododendron, Kalniia and Oxydendruni, in Ericaceae (11. 45L). 

 f- Two cells se|Uici<lally dehiscent; lloweis bhi.c 



Paulowfnia, in Scrophulariaceae ( [i. 4."i7). 

 e' Berry subtended by accrescent calyx. 



Diosperus, in Ebenacese I p.. 4.".'!). 

 e' Fleshy drupes in 



f^ Axillary fascii Ics Bunielia, in Sapotaceae (11. l.">L' ) . 



f- Loose terminal |i,niiclrs Chionaiithus, in Oleacese (p.. 4."il. 



e* Dryish drupe; lr;i\rs siniph' and 



f Alteiaiale; llowcrs in iinwded a.\ill,ary idustri's. 



Syinplocaceae (p. 4.''i.'il. 



{■ Opjiosite; drupe 4-wiirged Styraceae (p. 4.14). 



e'^ I'od-like lapsulr; llowers bihdii.afi> in musphiiiMrs termin.al |ianicles. 



Catalpa, in Bignoniaceae It). 4."0). 

 d' Ovary infei'i(.r; (1(.weis jici'lcct: co)nll:i 



e C^ainpanulate; stamens 1(1; anth.a- ,rll,s op,«uing by a hu-minal iiore ; fruit a berry. 



Vacciniiim, in Ericaceae (p. 4.0L' I 

 e- Uotale; fion-ers in compound corinibs : triiil a blue drupr with llattenod pit. 



,.„,,, ,r a . , ,^il>"rn"ni, in Caprifoliaceae (p. 4."il ) . 



e' Uubular-funnelform ; flowers m globus,, hrads ; leaves npposite or in whorls of 3 



Cephalanthus, in Rubiaceae (p. 4ri(i). 



