426 



CRUCiFERAE (MUSTARD FAMILY) 



* * Stem-leaves with a sagittate partly clasping base, rather crowded. 



5. L. CAM^ESTRE (L.) R. Br. Minutely soft do >'//>/; leaves 

 arrow-shaped, somewhat toothed ; pods ovate, winged, rough, 

 the style longer than the narrow notch. 



Fields, roadsides, etc., becoming common. (Nat. 

 746. L. campestre. from Eu.) FIG. 746. 



6. L. DuAuA L. Perennial, obscurely hoary ; 

 leaves oval or oblong, the upper with broad clasp- 

 ing auricles ; flowers corymbose ; pods heart- 

 shaped, winnless, thickish, entire, tipped" with a conspicuous 



style. Waste places and cultivated grounds; not common. Part of fruiting 



Part of fruiting 

 raceme x %. 



747. L. Draha. 



(Nat. from Eu.) FIG. 747. 



raceme x 2 / 3 . 



Old 



8. COR6NOPUS Ludwig. WART CRESS. SWINE CRESS 



Pod flattened contrary to the narrow partition ; the two 

 cells indehiscent, strongly wrinkled or tuberculate, 1-seeded. 

 Cotyledons narrow and incuinbently folded transversely. 

 Diffuse or prostrate fetid annuals or biennials, with minute 

 whitish flowers. Stamens often only 2. (Name from Kopuvij, 

 crow, and Trotfs, foot, from the deeply cleft leaves.) SENE- 

 IUERA Poir. 



I. C. nfnvMus (L.) Sin. Leaves 1-2-pinnately parted; 

 pod* notched at the apex, rough-wrinkled. (Senebiera I 



Waste places, chiefly near ports. (Adv. from the 

 World and now widely distributed as a cosmo- 

 politan weed.) FIG. 748. 



2. C. FROctfMBENS Gilibert. Leaves less di- 

 vided, with narrower lobes; pods not notched 

 at the apex, tubercled. ( C. Coronopus Karst. ; 

 Senebiera Coronopus Poir.) Ballast, infrequent, 



748. C. didymus. much rarer than the preceding species. (Adv. 749. 0. 

 Leaf and pod x 2%. from Eu.) FlG. 749. Pod x 2%. 



9. SUBULARIA L. AWLWORT 



Pod ovoid or globular, with a broad partition ; the turgid valves 1 -nerved. 

 Seeds several. Cotyledons long and narrow, incuinbently folded transversely, 

 i.e., the cleft extending to the radicular side of the curvature. Style none. 

 A dwarf stemless perennial, aquatic ; the tufted leaves awl-shaped (whence the 

 name). Scape naked, few-flowered, 2-8 cm. high. Flowers minute, white. 



1. S. aquatica L. The only species. Margins of lakes and slow streams, 

 Nfd. to B.C., southw. to centr. N. E., Wyo., and Cal. ; local. Aug., Sept. 

 (Eu., Siber.) 



10. CAPSELLA Medic. SHEPHERD'S PURSE 



Pod obcordate-triangular, flattened contrary to the narrow partition ; the 

 valves boat-shaped, wingless. Seeds numerous. Cotyledons incumbent. 

 Annuals; petals small, white. (Name a diminutive of capsa, a box.) 



1. C. Bi'Rsv-rASToius (L.) Medic. Stem-leaves arrow-shaped, sessile. 

 ( /iiirxa Britton.) Common weed; Apr. -Sept. (Nat. from Ku.) Kxtrcmely 

 variable in foliage and outline of pod. Upon these characters Almquist has 

 proposed sixty-three forms or elementary species. 



II. CAMELINA Crantz. FALSE FLAX 



Pod obovoid or pear shaped, pointed, margined; partition broad; valves 

 1 -nerved. Si eds numerous, oblong. Cotyledons incumbent. Style slender. 

 Flowers small, yellow. (Name from x ^" 1 ^ dieai'f, and \ivov, flax.} 



