ANALYSIS OF THE NATURAL OEDERS. 



197 



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



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

 p Ainents cylindrical or oblong, (s). 



s Ovary 1-celled, 1-seeded. Fruit often fleshy. MYRICACE.E. 121 



s Ovary 2,ceiled, 2-ovuled, 1-seeded. Fruit ofteu winged. BETCLACEJS. 120 

 s Ovary many-ovuled, many-seeded. Seeds comous. SALICACE^E. 122 



D COHORT 4. CONOIDE^E. 



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

 jointless. CONIFERJS. 127 



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

 joiatless. TAXACE.E. 128 



Leaves pinnate. Fertile flowera solitary. Stems simple, palm-like. CYCADACE^G. 128 



E COHORT 5. SPADICIFLORJE. 



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



a branching " spadix" from a spathe. PALMACE^S. 130 



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

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



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



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



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



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



4 Flowers with a perianth or not. Plants submersed. NAIADACEJS. 134 



F COHORT C. FLORIDE^E. 



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

 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. HYDEOCHARIDACE^E 138 



a Flowers dioecious, 6-androus. Shrubby climbers. DIOSCOBEACE^. 144 



a Flowers perfect, gynandrous (stamen on the pistil). ORCHIDACE^E. 133 



monandrous with half an anther. MABANTACK^E- 139 



3 6-androus. Stamens distinct, (b) 



b Perianth woolly or mealy outside. Ovary half-free. ILEMODOKACE.E. 542 



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



Stamens 3, anthers extrorse. IEIDACE/E. 143 



Stamens 6. AUARYLLIDAGE^. 140 



c Carpels many, distinct, acheniate in fruit. ALISUACE^E. 135 



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



d Leaves verticillate in 1 or 2 whorls. Stigmas 3. TKILLIACE.E. 147 



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



Stigmas united into 1. COMMELYNACE^E. 152 



e Leares net-veined, dilated. Flowers perfect, 4-parted. KOXBURGHIACE^:. 146 

 Flowers dioecious, 6-parted. SMILACE^E. 145 



<j 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^E. 148 

 g Flowers colored, irregular or else triandrous. PONTEDERIACE^:. 150 

 g Flowers greenish, glume-like or scarious. JUNCACE^E. 15i 



