

 ANALYTICAL ARTIFICIAL KEY. x { 



B. Ovary superior or nearly so : perianth regular or 710110. 



Carpels united into a compound ovary : perianth corolla-like rarely 



partly herbaceous : seed albuminous. 

 Flowers not upon a spadix. 



Terrestrial ; stems i'rom a bulb, conn or rhizome : anthers 2-celled. LILIACE*, 108. 

 Woody climber, with tendrils : anthers 1-celled. SMILACE*, 109. 



Submerged aquatic, with linear grass-like leaves. PoNTBDEBlACEX, 110. 



Flowers crowded upon a spadix : fruit fleshy and coalescent, 2-celled. AIIACEJS, 111. 

 Carpels distinct (or separable) or solitary : aquatic or marsh herbs. 

 Perianth none : seeds albuminous : fruit utricuiar or nut-like. 



Flowers monoecious in heads or on a crowded spadix : leaves linear. TYPHACEJE, 112. 

 Small floating disk-like plants. LEMNACE^E, 113. 



Perianth herbaceous, petaloid, or none : albumen none. 



Carpels few : perianth none or in fertile flowers herbaceous and 



valvate. NAIAPACE.E, 114. 



Carpels numerous in a whorl or head : 3 sepals herbaceous, 3 



petaloid. AUSMACE*:, 115. 



Perianth of 6 similar glumaceous segments : capsule 3-valved. Rushes 



or sedge-like. JuNCACE*, 116. 



Perianth coriaceous in two dissimilar series : fruit a berry or drape : 



palms. PALM^E, 117. 



Flowers in the axils of scales or glumes, spicate, without evident perianth. 



Stems solid ; sheaths closed ; scales single ; anthers basifixed. CYPEKACE.S, 118. 



Culms hollow, terete ; sheaths split ; glumes in pail's ; anthers versatile. GRAMINE.E, 119. 



SERIES II. CRYPTOGAMOUS PLANTS. Flowers without stamens or pistils, ami 

 not producing seeds with an embryo. 



CLASS III. ACROGENOUS PLANTS. Plants growing from the apex, and mostly 



with distinct leaves. 



SUBCLASS I. VASCULAR ACROGENS. Plants with both woody and vascular tissue. 



A. Spores only of one kind. 



Cylindric jointed leafless plants with toothed sheaths : fructification 



in a terminal spike. EQUISETACE^E, 120. 



Fronds fern-like, erect in vernation : sporangia globose, coriaceous, 



in a spike or panicle. OPHIOGLOSSACE.S, 121. 



Fronds cm-mate in vernation : fructification on their under surface FILICES, 122. 



B. Spores of two kinds. 



Fructification within the base of the leaves or in their axils. SELAGTXELLE/E, 123. 



Spores contained within peduncled capsules borne by the rhizomes. MARSILIACKJE, 124. 

 Floating fronds small, pinnately branched : spores at the base. SALVINIACE*, 125. 



SUBCLASS II. CELLULAR ACROGENS. Plants with cellular tissue only. 



Capsule usually opening by a lid, containing spores without spiral fibres. 



Branches not regularly fascicled: areolation simple: spores of one kind. Musci, 126. 

 Branches regularly fascicled : areolation of colorless cells and green 



linear ducts : spores of 2 kinds. SPHAGNA'CE^:, 127. 



