12 
Genus 24. Sisymbrium. 
S. officinale. Hedge Mustard. Fig. 111. 
Leaves lyrate, hairy. Pods short, pressed against the stalk. Com¬ 
mon on waste ground and hedge-banks. 2 ft. Ann. June-Aug. 
Yellow. (A) E.B. 1.735. E.B. 2.939. U. Sr Am. 34. Bab. 24. 
Lind. 29. 
S. Iris. London Rocket. Fig. 112. 
Leaves pinnatifid. Pods long, erect. Walls near London. 1-2 ft. 
Ann. JulyandAug. Yellow. (4) E. B. 1. 1631. E. B. 2. 940. 
LI. fy Am. 35. Bab. 25. Lind. 29. 
S. Sophia. Flix-weed. Fig. 113. 
Leaves bipinnate, with linear lobes. Waste places. 2 ft. Ann. 
July and Aug. Pale yellow. (|) E.B. 1. 963. E. B. 2. 941. 
II. Sr Am. 35. Bab. 25. Lind. 29. 
S. Thalianum. Thale-Cress. Fig. 114. 
Leaves oblong, toothed; lower ones in a tuft. Common on walls. 
2-8 in. Ann. April and May. White. (4) E.B. 1.901. E.B. 
2. 942. H. Sr Am. 35. Bab. 25. Lind. 24. 
Genus 25. Erysimum. 
E. CHEIRANTHOIDES. Treacle-Mustard. JVorm-seed. Fig. 115. 
Leaves lanceolate. Waste places and fields. Acrid. 1-2 ft. Bienn. 
May-Nov. Yellow. (4) E. B. 1 . 942. E. B. 2. 943. H. fy Am. 36. 
Bab. 26. Lind. 30, 
E. Alliaria. Hedge-Garlic. Fig. 116. 
Leaves heart-shaped, with foot-stalks. Hedge-banks and waste 
places; very common. Plant smells like garlic. 2-3 ft. Bienn. 
May. White. (4) E. B. 1 . 796. E. B. 2. 944. H. fy Am. 35. 
Bab. 26. Lind. 29. 
E. orientale. Hare's-ear Mustard. Fig. 117. 
Leaves oblong heart-shaped, stein-clasping. Glaucous. Fields. 
1-2 ft. Ann. June. Yellowish white. (4) E. B. 1. 1804. E. B. 
2. 945. H. Sr Am. 36. Bab. 26. Lind. 30. 
Genus 26. Cheiranthus. 
C. Ciieiri. Wall-Jlower , Fig. 118. 
Stem shrubby, branches angular. Leaves lanceolate. Pods linear. 
Walls. 1-1-2- ft. Bienn. usually. April. Orange-yellow. (4) 
E. B. 1 . 934. E. B. 2. 946. H. Am. 24. Bab. 21. Lind. 22. 
Genus 27. Mattiiiola. 
M. incana. Hoary Stock. Fig. 119. 
Stem shrubby. Leaves lanceolate, entire, hoary. Sea-cliffs in the 
south of England. 1-2 ft. Bienn. May-july. Purple. (4) 
E. B. 1 . 1935. E. B. 2. 94 7. H. Am. 24. Bab. 21. Lind. 22. 
M. siNtiATA. Great Sea-Stoc/c. Fig. 120. 
Stem herbaceous, spreading. Leaves downy, waved. Sandy sea¬ 
shores. 2 ft. Bienn. May-Aug. Purple. (4) E. B. 1. 462. 
E.B. 2.948. H. Am. 24. Bab. 21. Lind. 22. 
