338 Yellow to Orange Flowers 



the Night-blooming Cereus, and the Night-blooming Cactus. 

 The yellow petals of the Evening Primrose shine so lumi- 

 nously in the dusk that they easily attract the crepuscular 

 moths, which fertilize the plants by carrying the abundant 

 sticky pollen from one flower to another. The number 

 four is conspicuous in this flower, which has four petals, a 

 four-parted calyx, eight stamens, a four-celled ovary, and 

 a four-cleft stigma. When the corolla fades, after its sin- 

 gle night of revelry, it soon shrivels and drops off, and then 

 the oblong capsule containing the seeds quickly matures 



HEART-LEAVED ALEXANDERS 



Zizia cordata. Parsley Family 



Stems: erect, branched. Leaves: upper stem-leaves compound, short- 

 petioled, ternate, the segments ovate, crenate-dentate ; basal leaves long- 

 petioled, sometimes undivided. Flowers: in umbels, eight-to-twelve 

 rayed. Fruit: globose-ovoid. 



The bright shining green leaves of this Parsnip and its 

 brilliant golden umbels of minute flowers combine to render 

 it one of the many handsome plants that deck the damp 

 alpine meadows. It has stout hollow stalks and very glossy 

 foliage, the leaves being ternate, or arranged in threes, with 

 broad, wavy-margined, sharply toothed leaflets. It has a 

 most disagreeable odour. 



NARROW-LEAVED PARSLEY 



Lomatium triternatum. Parsley Family 



Stems: from a deep-seated elongated fusiform root. Leaves: biter- 

 nate or triternate, the leaflets narrow, linear. Flowers: in an unequal 

 umbel of five to eighteen rays with slender bracts. 



The yellow flowers of this tall Parsley have no involucre. 

 The stems are purplish at the base and the leaves are deeply 

 cut into narrow leaflets. The fruit is narrowly oblong with 



