6 KEY TO THE OltDEilS 



Key to the Orders of the Fonnosan Flowering (Plants. 



I. Dicotyledons. 



1. Polypetalous. 



Series I. Thalamifloral. RanunculacesB to Tiliacera. 



II. Discifloral, Liueie to Coriariea?. 



III. Calycifloral. Leguminosse to Cornacese. 



2. Garaopetalous. Capri foliacese to Plantaginese. 



3. Apetalous. Nyctaginese to CeratophyllesB. 

 II. Gymnospemns, Coniferee to Cyeadacese. 



III. Monocotyledons. 



1. Microspermous. Hydrocharidese to Orchidese. 



'2. Epigynous. Scitaminese to Dioscoreacese. 



3. Coronarious. Koxburgliiace?G to CommelinacesB. 



4. Calycinous. Flagellarieic to Pa 1m se. 



5. Nudifloral. Paudanesa to Lemnacero. 



6. Apocarpous. Alls in ace BB to NajadacesB. 



7. Glumaceous. Eriocauleai to Gramiuejio. 



Class I. Dicotyledons Polypetalous. 



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, Ternstroemiacese, Malvaceae) ; 

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

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

 Polyyala, 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 fewer, petals 1- seriate. 



Sepals deciduous. Hanuuculacea3. 



(Ranunculus). 



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

 2- or more-seriate. 



