Dicotyls or Exogenous Plants. 51 



4. Genus BI-CU-CUL'-LA. (/J/W'w /;-«).— Petals 4, slightly cohering, 

 forming a heart-shaped or 2-spurred corolla; filaments slightly united 

 in two sets; leaves compound-dissected. 



Bi-cu-cul'-la cu-cul-la'-ri-a (Iv.) Millsp. {Dicentra citctiUaria DC.)/ji. q, 



Dutchman's Breeches. Bulb granulate; corolla with 2 divergent spurs fv'^^''^^ '^ 

 longer than the pedicel ; raceme simple. 



Bi-cu-cul'-la can-a-den'-sis (Goldie) Millsp. {Dicentra canadensis , ^ 



DC.) Squirrel-corn. — Subterranean stems with scattered grain-like' '/ ,' - J I 

 tubers; corolla nearly heart-shaped, the spurs very short and rounded; 

 raceme simple. 



Bi-cu-cul'-la ex-im'-i-a (Ker.) Millsp. {Dicentra exiniia DC) Ear- 

 Drop. — Subterranean shoots scaly; raceme compound, clustered ; flowers 

 oblong, spurs very short. 



o. Genus CAP-NOI'-DES. {Coryc{alis). — Q.oxo\\a. 1-spurrcd at the 

 base, deciduous, style persistent; flowers in racemes; plants pale or 

 glaucous ; leaves compound. 



Cap-noi'-des sem-per-vi'-rens (L.) Borck. (Corydalis glauca Ph.) 

 Pale Corydalis. — Stems strict; flowers purplish or rose color with yel- 

 low tips ; racemes panicled. 



Cap-noi'des flav'-u-lum (Raf) Kuntze. {Corydalis flavulaVi^.] Yel- / 

 low Corydalis. — Low, ascending ; outer petals wing-crested on the back; 

 corolla pale yellow, 8-4 lines long ; spur very short. 



Cap-noi'-des au'-re-um (Willd.) Kuntze. [Corydalis aitrea Willd.) 

 Golden Corydalis. — Corolla golden yellow, Yz in. long, the .slightly de- 

 curved spur about one-half as long, shorter than the pedicel ; outer 

 petals merely carinate on the back, not crested. 



XXXII. Order CRU-CIF'-ER-/E. MUSTARD FAMILY.— Herbs with 



cruciform flowers, sepals 4, petals 4; stamens 6 (rarely only 2 or 4), 

 4 long and 2 short ; fruit a silique or silicle. 



Flowers white, purple, etc., but not yellow (a). 



Flowers yellow, yellowish or greenish-yellow (b;. 

 a. Pod obcordate-triangular, many-seeded :d:. 



a. Pod roundish, flattened, notched at the top, 1 seed in each cell Lepidium. \ 



a. Not as above c;. 



b. Pod elongated, terete, close-pressed to the stem ; leaves runci- 



nate Sisymbrium. 2 



