ANALYSIS OF THE NATURAL ORDERS. 197 



p Amenta globular, racemed. Nutlets 2-celled, woolly. OBD. 62 



p Amenta globular, solitary. Nutlets 1-celled, 1 seeded. PLATANACE^E. 117 

 p Aments cylindrical or oblong, (s). 



8 Ovary 1-celled, 1-seeded. Fruit often fleshy. MTBICACE^. 121 



g Ovary S.ceiled, 2-ovuled, 1-seeded. Fruit often winged. BETCLACE^E. 120 

 8 Ovary mtiny-ovuled, many-seeded. Seeds comous. SALICACEJE. 122 



D COHORT 4. COXOIDE^E. 



^ Leaves simple. Fertile flowers in cones. Stems branching, woody, 



jointless. CONIFERS. 127 



1 Leaves simple. Fertile flowers solitary. Stems branching, woody, 



jointless. TAXACEJE. 128 



^ Leaves pinnate. Fertile flowers solitary . Stems simple, palm-like. CYCADACE^E. 128 



E COHORT 5. SPADICIFLOR/E. 



^ Trees or shrubs with palmi-cleft leaves all from one terminal bud, and 



a branching " spadix" from a spathe. PALMACEJE. 130 



T Herbs with simple, rarely ternate leaves. Spadix simple. (2) 

 2 Plants frond-like, minute, floating loose on the water. LEMNACBA. 132 



2 Plants with stem and leaves, rooting and fixed. (3) 



3 Spadix evident, in a spathe or on a scape. AEACE^. 131 



3 Spadix obscure or spike-like. Stems leafy. (4) 



4 Flowers with no perianth, densely spicate or capitate. TYPHYCEJB. 133 



4 Flowers with a perianth or not. Plants submersed. NAIADACEJ:. 134 



F COHORT 6. FLORIDE^E. 



1 Flowers (not on a spadix) in a small, dense, involucrate head, (k) 

 Tf Flowers (not on a spadix) solitary, racemed, spicate, etc. (3) 



3 Perianth tube adherent to the ovary wholly or partly, (a) 

 3 Perianth free from the ovary. (4) 



4 Petals and sepals differently colored (except in Medeola, 147). (c) 

 4 Petals and sepals similarly colored, (e) 



a Flowers dioecious or polygamous. Low, aquatic herbs. HYDBOCHARIDACK 136 



a Flowers dioecious, 6-androus. Shrubby climbers. DIOSCOKEACE.B. 144 



a Flowers perfect, gynandrous (stamen on the pistil). OBCHTDACE^. 138 



monandrous with half an anther. MABA>TACEJE- 139 



3 6-androus. Stamens distinct, (b) 



b Perianth woolly or mealy outside. Ovary half-free. HJESIODOBACE.E. 342 



b Perianth glabrous outside. Stamens 3, anthers introrse. BURMANNIACE.S. 137 



Stamens 3, anthers extrorse. IBIDACE.E. 143 



Stamens 6. AMABYLLIDAGE^B. 140 



c Carpels many, distinct, acheniate in fruit. ALISMACEJB. 135 



c Carpels 3, united, with the stigmas distinct or not. (d) 



d Leaves verticillate in 1 or 2 whorls. Stigmas 3. TBIIXIACEJ:. 147 



d Leaves alternate. Stigmas 3. Scurfy epiphytes. BBOMEUACE^E. 141 



Stigmas united into 1. COMMELYNACEJS. 152 



e Leaves net-veined, dilated. Flowers perfect, 4-parted. ROXBUBGHIACE^:. 146 

 Flowers dioecious, 6-parted . SMILACEJS. 145 



e Leaves parallel-veined, (f) 



f Styles, and often the stigmas also united into 1. (g) 



g Flowers colored, regular. Stamens 6 (4 in 1 species). LILIACE^. 148 

 g Flowers colored, irregular or else triandrous. PONTBDERIACE^E. 150 

 g Flowers greenish, glume-like or scarious. JCNCACEJE. 151 



