6 KEY TO THE OBDBBS 



Key to the Orders of the Formosan Flowering (Plants. 



I. Dicotyledons. 



1. Polypetalous. 



Series I. Thalamifloral. Ranunculce to Tiliacea). 



II. Discifloral, Linese to Coriariese. 



III. Calycifloral. Legumiuosse to Cornacese. 



2. Gamopetalous. Caprifoliacese to Plantagineye. 



3. Apetalons. Nyctagiuese to Ceratophyllese. 

 II. Gyimiosperms. Coniferee to Cycadaceao. 



III. Monocotyledons. 



1. Microspermous. Hydrocharideae to Orchide&e. 



2. Epigynous. Scitamiueae to Dioscoreacese. 



3. Corouarious. II o x b u r g li i a c e se to C o in in e 1 i n a c e . 



4. Calyciuous. Flagellarieae to Palintc. 



5. NudiHoral. Paiidauese to Lemnacea). 



6. Apocarpous. Alisinaceas to Najadacese. 



7. Glumaceous. Eriocauleaa to Gramiuere. 



Class I. Dicotyledons Polypetalons. 



Series I. Thalamifloral. Flowers usually bisexual and regular ; calyx 

 inferior, of distinct or connate sepals ; corolla of distinct petals, sometimes 

 united at the very base, (for examples, Ternstro3iniacea3, Malvacesc) ; 

 stamens hypogyuous, rarely inserted on a liypogynous disk or torus. Excep- 

 tions : Flowers unisexual in Menispermaceae ; irregular in Viola, Impatiens, 

 Potyyala, and some others ; petals none in Clematis and some others. 



Ovary apocarpous, of 2 or more free carpels, rarely carpel solitary. 

 Flowers bisexual. 



Sepals 5 or feAver, petals 1- seriate. 



Sepals deciduous. Banuuculacefe. 



(Ranunculus). 



Sepals and petals 2-3-seriate, or sepals 1-seriate and petals 

 2- or more-seriate. 



