204 POPULAR FLORA. 



KEY TO THE FAMILIES OR ORDERS OF CLASS H. 



[• Spadiceous Division. Flowers collected on a spadix (184), i. e. sessile and crowded in a spike 

 or head on a thickened axis, and with or without a spathe or enwrapping bract (185). 



Trees or shrubs, with simple stems ; the flowers having calyx and corolla, Palm Family, 205 



Herbs, the small and crowded flowers either naked or with a small perianth. 



Spadix surrounded by a large spathe: flowers generally naked: fruit a berry, ) 

 Spadix without a spathe: perianth of 6 pieces, J ArumI'. 205 



Spadix without any proper spathe: perianth none: fruit an akene, Cat-tail F, 206 



Spadix (as it might be called) raised above a small spathe, covered with blue and 



tabular, 6-lobed flowers. Belongs to the next division, Pickeeel-vveed F. 208 



II. Petaloideous Division. Flowers not on a spadix and not enclosed by glumes orchafiy or scale- 



like bracts (as in Grasses and Sedges), but having a calyx and corolla, or a 6-Ieaved or 6-lobed 

 (rarely 4-leaved) perianth colored like a corolla. 



Perianth free from the ovary, that is, inserted underneath the ovary, and 

 Of 3 green or greenish sepals and 3 distinct and colored petals. 



Pistils many, in a ring or a head, making akenes, Water-Plantain F. 206 



Pistil 1 : styles or sessile stigmas 3. Leaves whorled, veiny, Trillium F. 206 



Pistil and slender style 1 : leaves alternate, parallel-veined, Spiderwort F. 207 



Of mostly 6 petal-like leaves in two ranks, three outside and three inside, or else 6- 

 (rarely i-) lobed, all colored alike. 

 Stamens only 3, or 6 and the three on one side of the flower much shorter than 



the rest, Pickebei^weed F. 208 



Stamens 6, or as many as the divisions of the perianth, all alike. 

 Anthers turned outwards, i. e. on the outer side of the filament. 



Leaves in whorls : flowers perfect: long stigmas 3, Indian Cucumber-root, 207 

 Leaves alternate, and with side tendrils, netted-veined between the ribs: 



flowers dicecious: styles or sessile stigmas 3, Greenbrier F. 208 



Leaves alternate, without tendrils : flowers perfect or polygamous : styles 



3 or 3-cleft, Colchicum F. 209 



Anthers turned inwards, i. e. on the inner side of the filament: style 1: 



stigmas 1 or 3, Lily F. 209 



Perianth adherent to the ovary below, and therefore apparently borne on it 



Stamens 6: anthers turned inwards. Flowers regular or nearly so, Amaryllis F. 213 



Stamens 3: anthers turned outwards. Flowers often irregular, Iris F. 214 



Stamens only one or two and united with or borne on the style. Flowers irregular, of 



singular shapes. Orchis F. 216 



III. Gluniaceous Division. Flowers not on a spadix, and without any corolla-like perianth, but 



with glumes, i. e. thin scales, such as the chaff or husk of Grain and Grasses. Stems rush-like 



or straw-like. 

 Glumes 6 in a whorl to each flower, like a calyx. Rush F. 216 



Glume oar, to eact Sewer, the. flower in its axil. Flowers coUeoted into heads or spikes. Sedge F. 216 

 Glumes 2 or 4 to each flower, in two sets, Gk4S F. 216 



