36 Flora of Devon and Cornxvall, by I. W. N. Keys. 
Barbarea R. Br. Rocket. 
B. vulgaris (R. Br.)~E.B. 443.— In damp places. Not uncom- 
mon about Plymouth ; Plymstock!. D. — Between Cmmplehorn 
and Lancellos. Between Millbrook and Crafthole ; between Hel- 
ford ferry and Helston : IV.D. S C.Fl. H. S. Heyb. : (col. Miss W.) 
C. Yellow Rocket. 
f B. intermedia (Bor.) '* Plentiful in a field at Common wood," 
near Plymouth (May, 1865): Briggs in Journ. Bot. iii. 349. D. 
I B.i^rmcox — E.B. il29. B.paiula Fries. — Hedges and 
waste places. A South of England plant. Frequent about Ply- 
mouth. Dawlish ; Newton ; Torquay : Rav. Honiton ; Bovey Tracey ; 
King's Teignton: N.B.G. D — Cawsand!. Between Polcarras and 
Parrcombe : W. D. d C. Ft. C. Early Winter-Cress. 
Arabis Linn. Rock-Cress. 
A. hirsuta 'Bv) — E.B. 587. — Old walls and stony banks. 
Mountwise, Devonport (1846) ; Turnchapel!, Plymstock; between 
Pennycomequick and Stoke (1849). Near Plymstock and Oreston ; 
near Yealm bridge : Briggs. Anstice cove, Torquay : T£es in Phytol. 
1851, p. 240. Ilsington; Lincombe : Fl. Sid. Totnes : Han. in 
Nat. a. 225. D. — Near Hayle : H. 8. Herb. North coast of Corn- 
wall : PasG. in Bot. Gaz. ii. 38. C. Hairy Rock-Cress. 
It may be worth mentioning that this plant — certainly now not common 
in the neighbourhood of Plymouth — was, in the time of Dr. Jacob {vide 
W. D. &C. FL), "plentiful about Turnchapel and walls at the bottom of 
Catherine-street, Devonport, and the Laboratory, Mountwise." 
A. petrcea (Lsnn.) — E.B. 469. — Wigvor down, near Meavy: Fl. 
Dev. D. Aljnne Rock- Cress. 
Mr. H. C. Watson admits this plant into his Devonshire list {Cyb. Brit. 
Sup. i.), but stigmatised thus (o), implying that the authority for the 
locality requires corroboration. Its alpine habit (vide Br. Fl. 5th ed. p. 26, 
and Bab. Man. 5th ed. p. 24) almost forbids the belief that it has ever been 
met with here. 
