28 CRUCIFER2E. (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. glailCcl, Pursh. (PALE CORTDALIS.) Stem i,priyht ; 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. FUMlRIA, L. FUMITORY. 



Corolla 1-spurred at the base. Style deciduous. Fruit iudehiscent, 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. OFFICINALIS, L. (COMMON FUMITORY.) Sepals ovate-lanceolate, 

 acute, sharply tcothed, 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. CRUCIFJERjE. (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 pouch), 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 c(Q. In these cases the cotyledons are 

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

 are conduplicate, thus cjjj). 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. SILIQUOSJE. Pod long, a silique, opening by valves. 



TRIBE I. ARABIDE.3E. Pod elongated (except In Nasturtium) Seeds flattened. Co- 

 tyledons accumbent, plane. 



