136 BEASSICACEAE. 



pedicels ascending. Sepals narrow, erect. Petals with spreading dilated 

 veiny blades. Anthers sagittate. Ovary short. Style short, but longer than 

 the ovary. Pod short, turgid, the beak fiat, shorter than the body. 



1. E. Eruca (L.) Britton. Plants 2-7 dm, tall, the stem usually branched, 

 sparingly pubescent: leaf-blades various, those of the lower leaves shallowly 

 toothed or pinnatifid, those of the upper leaves usually pinnatifid, the segments 

 toothed: pedicels stout, 2-4 mm. long: sepals linear-lanceolate, 13-15 mm. 

 long, glabrous: petals dirty -yellow, spatulate, 1.5-2 cm. long, veiny: pods 

 erect, slender-fusiform, 2-3 cm. long, the beak much shorter than the body. 

 [E. sativa Mill.] — S. Occasional, in fields. Nat. of Eu. — Spr. and sum. 



17. RAPHANUS [Tourn.] L. Annual or mostly biennial herbs. Leaf- 

 blades lyrate-pinnatifid, or those of the upper ones merely toothed. Sepals 4, 

 narrow. Petals 4, yellow, pink, or white, the blades cuneate or obovate. 

 Stamens 6: anthers narrow. Style columnar: stigma depressed or globular. 

 Pod elongate^ beaked. Seeds subglobose. 



1. R. sativus L. Plants 3-11 dm. tall, usually with scattered hairs: leaves 

 finely pubescent; blades spatulate to obovate in outline, pinnatifid or pinnately 

 parted, the terminal lobe very large and irregularly toothed: flowers rather 

 short-pedieelled : sepals oblong to linear, 6-7 mm. long^ bearded at the apex: 

 petals pink or white, spatulate, 11-14 mm. long: pods turgid, the body mostly 

 2.5-3.5 em. long, beaked. — Frequent, in fields and on roadsides. Nat. of Eu. 

 — Spr. — Radish. 



18. AIjYSSUM [Tourn.] L. Annual or perennial, sometimes partially 

 woody, plants. Leaf-blades entire or toothed. Eaeemes elongating. Sepals 

 4^ rather broad, slightly unequal. Petals 4, yellow, spatulate to oblong, some- 

 what longer than the sepals. Stamens 6: filaments narrow: anthers short, 

 often globose or ovoid. Style short, columnar: stigma scarcely dilated. Pod 

 short, often as wide as long. Seeds 2 or 4, wingless. 



1. A. alyssoides L. Annual, 1-3 dm. tall, hoary: the stem often branched at 

 the base: leaf -blades spatulate to linear-spatulate: sepals oblong or ovate- 

 oblong, 2-2.5 mm. long: petals pale-yellow, spatulate, 3-3.5 mm. long: pods 

 suborbicular, 3-4 mm. in diameter, sharp-margined. — S. Eare, in fields. 

 Introduced with clover seed. Nat. of Eu. — Sum. — Yellow- alyssum. 



19. KONIGA Adans. Annual or perennial, often diffuse herbs, or shrubby 

 plants. Leaf -blades entire. Sepals 4, herbaceous. Petals 4, white, with broad 

 blades. Stamens 6: anthers ovoid. Style slender: stigma depressed. Pod 

 ovate to subglobose. Seed solitary. 



1. K. maritima (L.) E. Br. Stems usually diffuse, minutely pubescent: 

 leaves 1-5 cm. long; Islades of the cauline ones oblanceolate to linear or linear- 

 lanceolate: flowers fragrant: sepals becoming 1.5-2 mm. long: petals 3-4 mm. 

 long, the suborbicular blades longer than the claws: pods 2-3 mm. long, short- 

 beaked. — M. Eather frequent, in waste places. Nat. of Eu. — Spr.-fall. — 



SWEET-ALTSSUM. 



20. DRABA [Dill.] L. Annual or perennial, often small herbs. Leaf- 

 blades entire or toothed. Sepals 4, rather broad. Petals 4, white or yellow, 

 or rarely pink or purple, or wanting. Stamens 6: anthers ovoid. Style 

 columnar or very short: stigma depressed. Pod oval to linear, sometimes 

 twisted. Seeds several. — Spr. 



