36 6. CRUCIFEK^E. 



laterally, usually deeply furrowed on each side, dissepiment very 

 narrow. Seeds large. Lower 1. rounded below or narrowed into 

 a footstalk. Fl. large. $. Hortii (Byrne), radical 1. rounded 

 at the base, pouch smaller ellipsoid Muddy sea-shores. A. V. 

 English Scurvy -grass. E. S. I. 



18. AKMOEA'CIA Gaertn. M. $ S. 



[A. rustica'na (G. M. & S.) j rootstock long and thick, radical 

 1. oblong eremite-serrate on loog stalks, stem-1. long lanceolate 

 incise-serrate or entire subsessile, pet. (white) twice as long as 

 cal., pouch ovoid 4-seeded. stigma peltate. Cock. Armoracia 

 L. E. B. 2323. R. ii. 17. St. 23 feet high. Rootstock 

 cylindrical. Waste ground, not native. P. V. Horse-radish.^ 



E. S. L 



1. A. amphib'ia (Peterm.) ; roots fibrous, 1. oblong narrowed 

 at both ends serrate or piunatifid, pet. (yellow) twice as long as 

 the cal., pouch ovoid, "stigma capitate." Nasturtium R. Br. 

 E. B. 1840. Radicula lancifolia (Mcench). St. 2 3 feet high. 

 Submersed 1. deeply pinnatifid. Ped. usually deflexed. 

 [DC. divided N. amphibium into a. indimsum having: all the 1. nearly 

 entire or serrate, and 3. variifolium having some of the 1. serrate, some 

 pinnatifid, others multifid with capillary segments.] Watery places. 

 P. VI. VIII. E. S. ?I. 



Tribe Y. Camelinece. 



19. CAMELI'NA Crantz. Gold-of-pleasure. 



[C. sativa (Crantz) ; pouches obovate inflated. E. B. 1254. 

 a ; pouches flaccid truncate. ; pouches rounded at the end 

 brittle. In fields of flax and corn, introduced^ but not 

 naturalized.] 



Suborder III. Angmtisept<e. Tribe VI. Thlaspidea. 



20. THLAS'PI Linn.. Penny Cress. 



1. T. arven'se (L.) ; fruitbearing raceme elongate, pouc h orbi- 

 cular with a broad dorsal wing, seeds concentrically rugose and 

 striate 5 6 in each cell, stem-1. oblong sagittate toothed. 

 E. B. 1659. R. ii. 5. Pouch very large (|-f in.), stigma sub- 

 sessile. St. often a foot high. Fields and roadsides. A. V. 

 VII. Penny Cress. E. 8. F. 



