230 PRACTICAL BOTANY. 



67^. Flowers on a spadix G73 



Flowers not on a spadix 674 



673. Spadix (subglobose) enveloped in a shell-form 

 spathe. Perianth deeply 4-parted ; segments hood-form or 

 wedge-shaped, with the apex bent inward, truncate, fleshy, 

 becoming spongy. Style 4-cornered. Stamens 4. Berries 

 globose. Leaves cordate, oval, acute. 



Symplocarpus fcBtidus, Xutt. 

 Spadix not in a spathe. Perianth 4- to G-sepalled. 

 Stamens 4-6. Stigma sessile. Fruit a green utricle. Flow- 

 ers yellow, at the summit of the scape, which thickens up- 

 ward into the yellow spadix. Leaves lanceolate. 



Orontium aquaticum, L. 



674. Perianth 4-parted, rotate (white). Stamens 4. 

 Ovary globular. Stigma simple. Berry. Flowers in ter- 

 minal racemes. Stem with 2 (sometimes 3) cordate leaves. 



Majanthemum bifolium, D.C. 

 {kSmilaciiia bifolia, Ker.) 



Calyx of 4 sepals (petals wanting). Stamens 2. 

 Silicles compressed. Cauline leaves incised, those of the 

 branches linear. (115) Lepidium ruderale, L. 



675. Flowers subtended by 2 or 3 bracts 676 



Flowers not subtended by 2 or 3 bracts 677 



676. Leaves prickly-pointed, awl-shaped, fleshy. Divi- 

 sions of the perianth at length horizontally winged. Flowers 

 solitary in the axils, with 2 leaf-like bracts. Embryo spiral. 



Salsola Kali, L. 

 Leaves not prickly, nor fleshy. Lobes of tlie peri- 

 anth not winged. Filaments united into a tube, bearing 5 

 1-celled anthers and 5 strap-shaped appendages. Stem not 

 leafy above. Flowers in cottony spikelets, crowded into an 

 interrupted spike. Embryo annular. 



Froelichia Floridiana, Moq. 



677. Styles or stigmas 4, 3, 2, or solitary and bifid.. .678 

 Style 1 ; stiirma capitate. Perianth bell-shaped, 



deeply 5-cleft (white, tinged with red); lobes oblong. Sta- 

 anens 5. Flowers solitary, axillary. Leaves fleshy. 



Glaux maritima, L. 



