^ ANALYTICAL ARTIFICIAL KEY. 



Fruit capsular, l-celled or more, seveml-ovuled. 

 Flowei-s naked, crowded in an invol«cratesi)ik(': pungent herb with 



entire leaves. rn-EHACK^, 89. 



Shrub with yellow axiilarv (lowers : capsule 4-5-celled: leaves 



alternate, lobed. " Steuculiaoe^, 21. 



Low herbs with opposite leaves. 



Capsule 3-5-eelled : succulent. FlcoiDE^, 44. 



Ca|»sule 1 -celled ; placentie central. 



Style and stigma one : stamens alternate with the sepals. 



Glaux in Primulace^e, 57. 

 Styles or stigmas 3 or more : stamens opposite the .sei)als. Caryophyllace.e, 14, 



Herbs without green foliage. Allotropa in EuicACE.t:, 54. 



4. Ovary and fruit inferior. 

 Fruit many -seeded. 

 Capsule 6-celled : flowei-s perfect, with 3-lobed valvatc calyx: per- 

 ennial herbs : leaves entire, alternate. Aristolociuace.t., J>7. 

 Capsule 4-celled : stamens 4 : marsh herbs with entire opposite leaves. 



Ludwigia in Onagrace^, 39. 

 Capsule 1 -celled with 3 parietal placentse : perennial herb ; leaves 



piimatifid. Datiscace^, 42. 



Capsule (iialf-inferior) 1 -celled with 2 parietal placentae : leaves 



cordate. Saxifragace^, 34. 



Fruit baccate : dioecious leadess parasites. 1iAFFLE.siacM';.e, 98. 



Fruit mostly 1 -seeded. 



Flowers perfect : fruit nut-like : perennial herbs with alternate entire 



leaves. Santalace^, 99. 



Dioicious parasites on trees, with opposite leaves and jointed stems : 



berry with glutinous pulp. LoRANTHACEiE, 100. 



Aquatic herbs, wuth opposite or verticillate leaves. HaloragejE, 38. 



B. Flowers unisexual, at least the staminate in anients. Trees or shrubs, with alternate 



Moncecious : male flowers in aments ; female solitary or few : ovary inferior. 



Leaves piunate, without stipules : fertile flowers and fruit naked. JtiGLANDACEiE, 94. 

 Leaves simple, with caducous stipules. 



Anthers 2-celled : nut in a cup-like or spiny involucre. Cupulifer^, 95. 



Anther-cells separate : nut in a foliaceous or tubular involucre. Corylace^e, 96. 

 Moncecious or dioecious, flowers all in aments : ovary superior. 

 Fruit a 1 -seeded nutlet. 



Bracts thickened and rigid in fiuit : imt winged or angled. Betulace^, 91. 



Bracts scaly : fruit wax-coated or drupe-like. MYRiCACEiE, 92. 



Fruit a many-seeded capsule : dicecious : bracts herbaceous : seeds 



comose. Salicace^, 93. 



SiTBCL.ASS IL GYMNOSPERM.E. Ovules naked upon a scale or bract or within a 

 more or less open perianth. Monoecious or dioecious trees or shrubs. 



Male flowers in aments : female subsolitary, the ovule within a doiible 



coriaceous integument with small terminal orifice : nearly 



naked dioecious shrubs. Gnetace^, 101, 



Flowers dia-cious, solitary, axillary : ovule becoming a bony seed 



within a flesliy envelope or cup. Taxace^e, 102. 



Female flowers in aments becoming dry cones or berry-like : ovules 



naked at the base of a .scale. Conifers, 103. 



Class IL MONOCOTYLEDONOUS or ENDOGENOUS PLANTS. Woody fibres 

 of the stem scattered irregularly. Usually with the parts of the flower in threes and 

 leaves parallel-veined. Cotyledon simple. Mostly herbaceous. 



A. Ovary inferior : perianth conspicuous, colored : perennials. 

 Aquatic : leaves opposite or whorl ed, 1 -nerved : flowers dioecious, 



regular, axillaiy, solitary. Hydi:ocharidace.e, 104. 



TeiTestrial : flowers ]ierfect. 



Flowers irregular : stamens and style coherent ; anthers 1 or 2 : 



leaves alternate, sheathing. Oi!CHinACE;F), 105. 



Flowers regular : stamens 3, perigyuous : leaves equitant. Iridace.e, 106. 



Flowers regular : stamens 6, perigynous : leaves not equitant. Amauyi,i,i'i)ACE.e, 107. 



