CRUCIFERAK (MUSTARD FAMILY) 



429 



natiM with short lobes ; flowers small ; frmting pedicels 8-16 mm. lonn soread- 

 ing ; pods linear-terete, erect. - About Atlantic ports, and rarely inland? (Adv. 



2. D. TENUIF6LTA (L.) DC. Similar but perennial and more caulescent- 

 leaves pmnatifid, and lobes longer; flowers larger, 1 cm. long: pedicels in fruit 

 2-3 cm. long. — Similar localities. (Adv. from Ku.) 



17. CONRINGIA [Heist.] Link. Hake's-ear Mustard 



Pods long, linear, 4-angled, somewhat rigid. Seeds oblong, one row in each 

 cell. Cotyledons incumbent. —Glabrous annuals with sessile elliptic entire stem- 

 clasping leaves. (Named for Prof. Hermann Conring of Helmstadt, lOCXj-iOGl ) 



1. C. orientAlis (L.) Dumort. Tall, slightly succulent : flowers pale yellow 

 (O. perfoUata Link.) — Waste places and newly seeded ground, becoming' more 

 common. (Adv. from Eu.) * 



18. ALLIArIA Adans. Garlic Mustard 



Pods long, linear, angled ; valves keeled, 3-nerved ; stigma simple, sessile or 

 nearly so. Oval sepals caducous. Pubescence simple or none. — Ours biennial 

 with deltoid-ovate cordate dentate petiolate leaves and small white fl(jwers. 

 (Name from Allium^ onion or garlic, referring to the odor.) 



1. A. officinXlis Andrz. Tall; pods 2.5-5 cm. long, spreading, borne on 

 short thick pedicels. (A. Alliaria Britton.) —Roadsides and near habitations, 

 eastw., local. (Introd. from Eu.) 



1. S. officinale. 



2. S. aftifi/fimum. 



3. <S. Iriu. 



4. S. canescens. 



S. incitmm. 



S. Sop/iia. 



S. T/i alia num. 



19. SISYMBRIUM [Tourn.J L. Hedge Mustard 



Pod terete, flattish or 4-6-sided, the valves 1-3-nerved. Seeds oblong, margin- 

 less, in 1 or 2 rows in each cell. Cotyledons incumbent. Calyx open.— Flowers 

 small, white or yellow. Pubescence spreading. (Latinized from an ancient Greek 

 name for some plant of this family.) Ours are mostly annuals or biennials. 



Leafy-stemmed; leaves pinnate or pinnntifid. 

 Stiofma 2-lobed ; pubescence, when pruoC.it, of simple hairs. 



Pods avvl-sbaped, 1-1.5 cm. long 



Pods linear-cylindrie, longer. 



Pods firm, 6-10 cm. Ions: 



Pods delicate, 3-4 mm. lon^ 



Stigma simple ; pubescence forked or stellate, or reduced to minute granules ; 

 pods delicate. 



Seeds 2-ranked in each cell 



Seeds 1-ranked in each cell. 

 Leaves pinnatifid or bipinnatifid ; pods 6-15 mm. long . . . .5. 



Leaves tripinnate ; pods about 2 cm. long 6. 



Leaves chiefly basal, entire or barely toothea T. 



1. S. officinXle (L.) Scop. Leaves 

 runcinate ; flowers small, yellow ; pods thick- 

 icalled, at maturity firm in texture, pubes- 

 cent or tometitulose, close-pressed to the 

 few-liranched stem, scarcely stalked. — 

 Waste ground. Me. and Ont., local ; also 

 Cal.. etc. (Adv. from Eu.) Fig. 75S). 



Var. LEiocAi?rtiM DC. Fods essentially ^^ 

 glabrons. — A common and unsightly weed. 

 (Nat. from Eu.) 



2. S. ALTISSIMDM L. (Tl MBLE MlS- 



TARD.) Tall ; leaves deeply pinnatifid irith 

 narroio segments ; flowers pale yelUnv ; pods 

 rigid, very long, divergent, hardJij thicker 

 than the short thickish pedirrls. — Waste 



places, roadsides, etc., a recent immigrant, locally abundant 



as a pernicious weed. (Nat. from Eu.) Fig. 760. 



Iti^itimum. 

 Leaf and part of ft-iilV 

 ing raoMse x »/,. 



