14 ANALYTICAL KEY 



Leaves without stellate hairs ; embryo curved or 

 coiled. 

 Stipules scarious Illecebraceab, 37(> 



Stipules none. 

 Leaves opposite. 

 Plant fleshy Salicornia, 369 



Not fleshy. 

 Flowers in heads or spikes, these often 



panicled ; anthers 1-celled Amaranthaceae, 371 

 Flowers sessile in forks of branching 



inflorescence Illecebraceab, 376 



Leaves alternate. 

 Flowers and bracts scarious Amaranthaceae, 371 



Flowers small, chiefly greenish ; no scarious 



bracts Chenopodiaceae, 364 



/, Shrubs or trees. 



Leaves small, linear or scale-like; low heath-like shrubs 



Empetraceae, 551 

 Leaves oblong to orbicular ; never heath-like. 

 Leaves opposite. 

 Fruit 3-celled, not winged Rhamnaceae, 560 



Fruit 2-cened, a double samara Aceraceae, 557 



Fruit 1-celled, a single samara Oleaceae, 650 



Leaves alternate. 

 Ovary 3-celled Rhamnaceae, 560 



Ovary 1-2-celled. 

 Styles and stigmas 2 Urticaceae, 344 



Style and stigma 1. 

 Anthers opening lengthwise Thymelaeaceae, 589 



Anthers opening by uplifted lids Lauraceae, 413 



d. Ovary inferior or so closely and permanently invested by the 

 calyx as to appear so. 

 Parasites on the branches of trees Loranthaceae, 351 



Aquatic herbs Haloragidaceae, 602 



Terrestrial. 

 Herbs with calyx colored like a corolla. 

 Leaves opposite, simple Nyctaginaceae, 375 



Leaves alternate, pinnate Sanguisorba, 494 



Leaves alternate, simple Comandra, 350 



Shrubs or trees. 

 Leaves scurfy Elaeagnaceae, 590 



Leaves not scurfy, opposite Nestronia, 350 



Leaves not scurfy, alternate. 

 Style 1, stigmatic down one side; flowers solitary, in 



pairs, or in umbel-like clusters Nyssa, 625 



Style 1, short; stigma terminal; flowers racemose Pyrularia, 350 

 Styles 2 Hamamelidaceae, 452 



b. Ovary or its cells containmg many ovules I. 

 I. Calyx none ; ovary and fruit naked. 



Aquatic herb Podostemaceae, 441 



Tree or shrub Hamamelh^aceae, 452 



I. Calyx present m. 

 flW. Ovary superior. 



