xlvi INTRODUCTION. 



Sub-class II.— ENDOGEN^, or MONOCOTYLEDONOUS 



PLANTS. 



Leaves with 'parallel veins. Stern with no distinction of wood, bark, and 

 pith. Flotvers with a ternary division. Cotyledon I ; or, if 2, alternate. 



Tribe I.— PETALOIDE^. 



Calyx and corolla both developed, in 3 or 6 divisions ; or, if absent, then the 

 sexual apparatus naked. 



* Tripetaloide.?:. 



Calyx herbaceous. Corolla petaloid. 



Ovarium superior. 



Placentae covering the whole lining of the carpella - 230. ButomEji;. 



Placentae occupying the inner suture of the carpella. 



Carpella several, distinct ... 229. ALissiACEii:. 



Carpella concrete. 



Capsule 3-celled, 3-valved - - - 232. Commeline>e. 



Capsule 1-celIed, with parietal placentae. (Flowers ^ £,03 Xykide^ 

 capitate) - - - ^ - • - 



Ovarium inferior. 



Embryo exalbuminous. (Water plants.) . - 231. Hydrocharide.E. 



Embryo albuminous. 



Stamens C .... 234. Bromeliace^. 



Stamen 1. 



Anther 2-celled, terminal - - - 241. Scitamine^e. 



Anther l-celled, lateral ... 242. Marantace^. 



**Hexapetaloide^. 



Calyx and corolla nearly equal in size, and uniform in colour ; both fully 

 developed and petaloid ; {the 7iumber of divisions usually 3 or 6). 



Ovarium inferior. 



Stamens and style concrete - - - - 240. Orchide^. 



Stamens and style distinct. 



Stamens 3, opposite the sepals. 



Anthers turned outwards, bursting lengthwise - 239. IridEjE. 

 Anthers turned inwards, bursting transversely - 236. BuRMANNiEiE. 

 Stamens 5-G, or more ; or if 3, opposite the petals. 

 Flowers hermaphrodite. 



Veins of the leaves diverging from the midrib Xoa-a Musace^ 



towards the margin - - S" ' 



Veins of the leaves parallel with the midrib. 

 Perianthium deeply parted, the sepals e<iuitant 

 with respect to the i)etals. 

 Seeds rostellate, with a hard black coat. ) <,..r ij,.,.^^.,„„ ^■. 



„, : > Zoo. ilYPOXIDE.li. 



Flowers regular " " i 



Seeds with a membranous, or soft spongy 1 „„„ a ,,.„„, , ,_., ,. 



,,, , . ', "' > zoo. AMAkYLI.IDEjK. 



coat, flowers more or less irregular J 

 Perianthium tubular, the sepals not etiuitant 237- ILtmodorace^E. 

 Flowers unisexual. Perianthium short, spreading 250. Dioscore.«. 

 Ovarium superior. 



Anthers turned outwards .... 245. MelantiiacEjE. 



Anthers turned inwards. 



Perianthium irregular, involute after flowering - 246. PoNTEDEREiE. 



Perianthium regular. 



Fruit drupaceous, or fibrous. Albumen cartila- "^ 



giiious, or fleshy. Plmbryo included, remote from j2o2. Palm^. 

 the hilum. Leaves divided - - J 



Fruit capsTilar, or succulent. Embryo next the 

 hiluni. Leaves undivided. 



