218 ANALYSIS OF THE NATURAL ORDERS. 



m Stamen 1, styles 2. Leaves opposite CALLITRI JHACE^E. lie 



m Stamens 2, styles 2. Leaves alternate, dissected. .PODOSTEMIACE>E. ll'i 

 m Sta. 12-24, style 1. Lvs. verticillate, dissected.. CERATOPHYLLACE.E. 118 



n Fruit a double samara (2-winged) ORDER 7i 



n Fruit a single samara (1-winged), or a drupe. Stamens 2 ORDER 101 



n Fruit not winged, o 3-seeded. Stamens 4 EUPHORBIACE.E. 113 



o 1-seeded. Stamens 4 or 8 ELEAGNACE^. 112 



o 1-seeded. Stamens 3. Parasites.. LORANTHACE^B. 109 



p Anthers opening by valves. Calyx colored LAURACE.E. 108 



p Anthers opening by slits. q Calyx colored. Stam. 8 THYMELACE^E. Ill 



q Calyx greenish ; racemed ORDER 37 



q Cal. green ; spiked. S. Fla. .COMBRETACE.E. (50) 



r Ovary and seed only 1, in the juicy drupe. Trees ORDER 65 



r Ovaries 24, seed 1. Fruit a drupe or nut. Shrubs. . .SANTAXACE^E. 110 



* Stamens numerous ORDER 47 



Stamens as many as the calyx lobes 1. URTICACE^;. 114 



t Leaves pinnate. Pistils 5, scarcely united ORDER 31 



t Leaves simple, linear, evergreen. Shrubs heath-like. .EMPETRACE^:. 119 

 t Leaves simple, expanded. Fls. 3-parted. Fruit dry.. EUPHORBIACE.E. 113 



t Leaves simple, expanded. Fls. 4- or 5-parted. Fruit fleshy ORDER 40 



c Nut drupaceous, naked. Leaves pinnate JUGLANDACE^B. 121 



v Nut or nuts in a cup or involucre. Leaves simple CUPULIFERJE. 122 



X Fruit fleshy, aggregated (sorosis). Juice (or sap) milky ... 2. URTICACEJE. 11.4 

 e Fruit dry. Plants with a watery juice or sap . . (y) 



y Aments globular, racemed. Nutlets 2-celled, woolly ORDER 65 



y Aments globular, solitary. Nutlets 1-celled, 1-aeeded PLATANACE^E. 120 



y Aments cylindrical or oblong, .(z) 



z Ovary 2-celled, 2-ovuled, 1-seeded. Fruit often winged.. BETULACE^E. 123 



z Ovary 1-celled, 1-seeded. Fruit often fleshy MYRICACEJS. 124 



* Ovary many-ovuled, many-seeded. Seeds comous SALICACE.E. 126 



D. COHORT 4. THE CONOIDS. 



* Leaven pinnate. Stem simple, palm-like. Sterile flowers in cones CYCADACE^E. 12ft 



* Leaves simple. Stem branching. Fertile flowers in cones CONIFERS. 121 



* Leaves simpie. Stem branching. Fertile flowers solitary TAXACE^E. 12? 



E. COHORT 5. THE SPADICEOUS MONOCOTYLEDONES. 



Trees or shrubs with palmi-cleft leaves all from one terminal bud, I j ALMAOBA j jo 



and a branching "spadix" from a spathe.. '" 



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



2 Plants frond-like, minute, floating loose on the water LEMNACE^E. 131 



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



3 Spadix evident, in a spathe or on a scape ARACEJB. 130 



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



4 Flowers with no perianth, densely spicatc or capitate TYPHACE^E. 139 



4 Flowers with a perianth or not. Plants submersed NAIADACEJE, 188 



