FLORA OF TROPICAL AFRICA. 



Class I. DICOTYLEDONS. 



First rudimentary leaves of the embryo opposite. Calyx and corolla 

 simllv tetramerous or pentamerous. Leaves irregularly net-veined. Vas- 

 war bundles of the stem confluent around the pith, increasing indefinitely 

 9 additions to the outside. 



this7l CharaCterS given in the follow ing list of the Natural Orders which are included in 

 prono^T' " e Sub J ect to man y exceptions, but few of which are indicated here. It is 

 1 sea to give an Analytical Key to the Orders on the completion of the work. 



SUBCLASS I. POLYPETAL^. 



etals distinct, rarely wanting or connate at the base. 



^°v^\ I \ Ranales- ~' S ^ w ^' f indefinite {except Menispermacea:), hypogynous {ex- 

 h/oto Jm Car P eIs d^tinct, free or immersed singly in the torus, rarely connate 



^ Albumen usually copious. Embryo relatively small {except Meuispermaceffi). 

 "PlwsitTi™™ 1,4 ^- Herbs wit h radical or alternate leaves, or shrubby climbers with 

 Anllus VeS ' Sti P ules °- Se Pals deciduous. Petals in Clematis and Thahctrum. 



St 'pul(?0 LU s UC , E ' E - Shrubs with alternate, simple, exstipulate, often scabrid leaves. 



,!I - Anova 6 P ersist ent. Seeds arillate. ' . 



^Na trimp Shrubs or trees, with alternate, entire, exstipulate leaves. Calyx and 



N. Mfk,. " 8 * Car P eIs indefinite. Albumen ruminate. 

 n «ipolatP n n MACE *' Climbing or twining shrubs, rarelv herbs. Leaves alternate, 

 connate ly P all »inerved. Flowers small, dioecious. Stamens 6 (3-9), free or 



V, g' 

 2 or 3 seri^ 8 f D Q ACE *- Shrub with fasciculate leaves. Sepals, petals, and stamens each in 



VI - Nyupu Cach - A "thers dehiscing by valves. Carpel 1. 

 nite - Carli f * CK *- ^ting herbs. Leaves orbicular or elliptical. Stamens mdeli- 

 ■"Teis free or consolidated. 



Q « 



'2t*». mial Pari etales.— Stamens definite or indefinite, hypogynous. Ovary syn- 

 d,4tf PimenL , pa J' letal P'acentation, \-celled or spuriously divided by cellular placentary 



*»"■ Ovules rarely solitary. 

 Vt *^ k ^ ACK *' Herbs, with radical and alternate leaves. Sepals 2-3, deciduous 



VlI I. C R rm? mens ind efinite or definite and diadelphous. Seeds albuminous 

 ^»»»oSK !*" Herbs, with alternate exstipulate leaves. Sepals 4. Petals 4. Sta- 



Vol t letradvna mous. Albumen 0. 



