28 CRUCIFERJB. (MUSTARD FAMILY.) 



Rocks by streams, Vermont to Wisconsin and Kentucky. April - July. Glau- 

 cous : flowers golden-yellow and showy, or paler and less handsome. Pods 

 1' long, uneven. 



2. C. glauca, Pursh. (PALE CORYDALIS.) Stem upright; racemes 

 panicled ; spur short and rounded ; pods erect, slender, elongated ; seeds with a 

 small entire crest. Rocky places; common. May -July. Corolla whitish, 

 shaded with yellow and reddish. 



4. FITMARIA, L. FUMITORY. 



Corolla 1 -spurred at the base. Style deciduous. Fruit indehiscent, small, 

 globular, 1 -seeded. Seeds crestless. Branched annuals, with finely dissected 

 compound leaves, and small flowers in dense racemes or spikes. (Name from 

 fumus, smoke.) 



1. F. OFFICINA.LIS, L. (COMMON FUMITORY.) Sepals ovate-lanceolate, 

 acute, sharply toothed, narrower and shorter than the corolla (which is flesh- 

 color tipped with crimson) ; fruit slightly notched. Waste places, about dwell- 

 ings. (Adv. from Eu.) 



ORDER 12. CRUCIFER./E. (MUSTARD FAMILY.) 



Herbs with a pungent watery juice and cruciform tetradynamous flowers : 

 fruit a silique or silicle. Sepals 4, deciduous. Petals 4, hypogynous, reg- 

 ular, placed opposite each other in pairs, their spreading limbs forming a 

 cross. Stamens 6, two of them inserted lower down and shorter. Pod 

 2-celled by a thin partition stretched between the 2 marginal placentae, 

 from which when ripe the valves separate, either much longer than broad 

 (a silique}, or short (a silicle or poucli), sometimes indehiscent and nut-like 

 (nucumentaceous}, or separating across into 1-seeded joints (lomentaceous). 

 Seeds campy lotropous, without albumen, filled by the large embryo, which 

 is curved or folded in various ways : i. e. the cotyledons accumbent, viz. 

 their margins on one side applied to the radicle, so that the cross-section of 

 the seed appears thus oQ ; or else incumbent, viz. the back of one cotyle- 

 don applied to the radicle, thus o(Q. In these cases the cotyledons are 

 plane ; but they may be folded upon themselves, as in Mustard, where they 

 are conduplicate, thus <^). In Leavenworthia alone the whole embryo is 

 straight. Leaves alternate, no stipules. Flowers in terminal racemes or 

 corymbs: pedicels not bracted. A large and very natural family, of 

 pungent or acrid, but not poisonous plants. (Characters taken from the 

 pods and seeds ; the flowers being nearly alike in all.) 



Synopsis. 



I. SILIQUOS2E. Pod long, a silique, opening by valves. 



TWBE I. ARABIDEJE. Pod elongated (except in Nasturtium) Seeds flattered. Co 

 tyledons accumbent, plane. 



