58 MUSTARD FAMILY. 



A. cirrhdsa, Raf . Wild in low, shady grounds, and cult., climbing 

 over bushes to a height of 8°-12° by means of the slender, young leaf- 

 stalks ; leaves delicate and decompound ; flowers flesh-colored in summer. 



3. CORYD ALIS. (Greek name for the crested lark.) Our species are 

 leafy-stemmed, ® wild in rocky places ; flowers spring and summer. 



* Stem strict ; flowers purplish or rose-color, with yellow tips. 



C. glauca, Pursh. Pale Corydalis. Common, 6'-2° high, very 

 glaucous ; spur short, rounded ; pods erect, slender, elongated. 



# * Stem ascending ; flowers yellow. 



*- Outer petals wing-crested on the back; corolla pale yellow, 3"-4" long. 



C. flavula, DC. Yellowish C. Pedicels slender, with conspicuous 

 bracts ; pods hanging or spreading ; seeds sharp-edged, irregularly 

 wrinkled ; petal-crest toothed. Prom Penn. S. & "W. 



C. micrantha, Gray. Pedicels short ; bracts small ; petal-crest entire ; 

 pods ascending; seeds blunt-edged, smooth, and shining. N. C, Mo., 

 Minn., and S. 



*~ ■*- Outer petals merely keeled on the back, not crested; corolla golden 

 yellow, i' long. 



C. aurea, Willd. Golden C. Low and spreading ; petals with a 

 spur \" long ; spreading or hanging pods, and smooth, blunt-edged seeds. 

 From Vermont, W. and S. 



A western var. {ocaidentalis) has longer flowers, with spur as long as body. 



4. FUMARIA, FUMITORY. (Latin: fumus, smoke.) ® Low, 

 leafy-stemmed, with finely cut compound leaves. 



F. officinalis, Linn. Common F. A delicate, small weed, with a close 

 spike of small, pinkish, crimson-tipped flowers, in summer. Occasional 

 in old gardens, waste places, and dung-heaps. 



X. CRUCIFER^, MUSTARD FAMILY. 



Herbs, with, watery juice, of a pungent taste (e.g. Horse- 

 radish, Mustard, Water Cress, etc.) ; cruciferous flowers (of 4 

 sepals, 4 petals, with their upper part generally spreading above 

 the calyx in the form of a cross) ; tetradynamous stamens 

 (i.e. 6, 2 of them shorter than the other 4 ; rarely 4 or 2) ; a 

 single 2-celled pistil with 2 parietal placentae, forming in 

 fruit a silique, or when short a silicle. (See Lessons, Figs. 

 235, 236, for the flower, Figs. 401-103 for the fruit, and Figs. 

 425-428 for the seed.) The embryo fills the whole seed, and 

 has the radicle bent against the cotyledons. Flowers in ra- 

 cemes, which are at first short, like simple corymbs, but 

 lengthen in fruiting ; no bracts below the pedicels. The blos- 

 soms are all nearly alike throughout the family ; so that the 

 genera are mainly known by the fruit and seed, which are, 

 therefore, indispensable and may usually be had before all 

 the flowers have passed. 



