ANALYTICAL KEY. 47 



, . . f Climbing plant with alternate net-veined leaves. Taitits Gen. (p. 521. ) 



\ Bulbous herbs Amaetxlis Fam. (p. 518.) 



r Floating or submerged plants 85 



155 < Terrestrial plants, or, if aquatic, erect from the bottom of the water 



L and projecting above it 156 



rLeaves in a single whorl of 4 or 5, with netted veins. Perianth, 



-,-c.\ segments, and stamens, 8 or 10 Paeis Gen. (p. 522.) 



I Leaves radical or alternate, linear or cylindrical, with parallel 



l_ veins 157 



f Perianth of 6 or 4 segments. Stamens as many or half as many 158 

 I Flowers gkimaceous, consisting of alternate chaffy scales, enclos- 



157 «! ing the stamens and pistil in the same or distinct scales . . 161 

 Stamens and pistils in dense heads or spikes, without distinct 



perianths 162 



' One style with 2 or 3 Unear stigmas 159 



158 -< One ovary with 3 distinct styles or stigmas 160 



Three distinct ovaries Schetjchzeeia Gem. (p. 497.) 



'Flowers minute, unisexual, in a globular head. 



-.egj Eeiocatiiox Gen. (p. 542.) 



I Flowers complete, distinct, or clustered, or panicled. 

 L Ersn Fam. (p. 535.) 



, gQ r Three short styles Tofieldia Gen. (Jd. 534.) 



1 Three sessile stigmas Teiglochin Gen. (p. 498.) 



TFIowers with a single scale under each set of stamens and pistil. 



, g, J , Sheath of the leaves closed round the stem . Sed&e Fam. (p. 543.) 

 I Flowers enclosed in two or more scales. Sheath of the leaves 

 [_ spht open on the side opposite the blade . Grass Farni. (p. 570.) 

 r Fruit a berry. Leaves usually broad . . . Aetjm Fam. (p. 486.) 



162 "I Fruit a dry nut. Leaves Unear and sedge-like. 



BuLEUSH Fam. (p. 484.) 



II. CEYPTOGAMS. {No stame-iis or pistil.) 



Plants witli distinct roots and stems or rootstocks, with leaves or 



green branches 2 



Plants variously shaped, without distinct roots, stems, and leaves, 

 seldom green unless aquatic . CEiLriAE Cetpto&ams (p. 614.) 



r Fructification in terminal spikes " . 3 



,-, J Fructification radical or in the axils of small leaves 4 



" j Fructification on the back of the leaves or leaf-hke branches. 

 L Feen Fam. (p. 621.) 



f Stems leafless, jointed, simple, or with whorled branches. 

 I Eqtjisetitii Gen. (p. 618.) 



3«| Stems beaiing nvmaerous small leaves . CiUBiross Gen. (p. 615.) 

 Stem bearing a simple or branched leaf below the spike. 



Feen Fam. (p. 621.) 



Capsules sessile Clitbiioss Fam. (p. 615.) 



Capsules stalked 5 



gf Capsules globular or urn-shaped, opening with a hd. Mosses (p. 614 ) 

 Capsules opening m valves Hepatic^: (p. 614.) 



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