Flora of Devon and Cormvall, by I.W.N. Keys. 71 
Serratula Linn. Saw-wort. 
S. tinctoria (L.) — E.B. 38. — Groves and thickets. — D- ! Fre- 
quent. Manadon wood, near Plymouth ; Tavistock. Near Teign- 
mouth : Jord. in Phytol. 1848, p. 828. Torquay; Ilsham : Park. 
in Rav. Berry-head : Trim. MS. Stoke wood, near Exeter: Far/, in 
Rav. St. Marychurch ; Tlsington ; Holne chase ; Ashburton ; Bovey 
Heathfield ; Chudleigh, &c. : Fl. Dev. Ilfracombe ; Clovelly ; Lyn- 
mouth : Rav. Also collected in the last-mentioned place by Mr. 
T. Clark: Phytol. 1852, p. 743. Near Southcott, N.D. : Maiv ib. 
1853, p. 793.— C. St. Kevern : Balkiv. Hedges [about Falmouth], 
plentiful Polytech. 1856. Goonhilly downs : J.B.T. 
Centaurea Linn. Knapweed. 
C. nigra (L.)— Heads globose, sometimes radiant — E".^. 278. — 
Meadows and pastures. — D- • Common, both forms. Abundant 
about Plymouth ; the radiant variety in quarries near Saltram. 
With white flowers near the Kingsbridge railway station : Parf. 
Teignmouth (radiant form) : Jord. in Phytol. 1843, p. 828. Tor- 
quay (•' almost always rayed"): Trim. MS. — C- Common. Black 
Knapweed. 
p. C. decipiens (Thuill.) C. nigrescens (Bab.) — D- Hele 
strand, near Ilfracombe : N. D. H. Common about Exeter : IVar. 
in Rav. Goodrington woods : Park. ib. — C- Near Budock bottoms ; 
Pennance, &c., " not uncommon :" Polytech. IS60. 
Dr. Trimen says this var. does not occur about Torquay. 
C. Cyanm {L.)—E.B. 277 —Corn-fields.— D- Common. About 
Plymouth, but not plentiful. Lympstone ; Exminster: Parf. 
Chudleigh : J. B.T. Ap.—Q. Near St. John's !. Near Liskeard : 
Balkw. " Found by Mr. Howard Fox near Glendurgan, rare :" 
Polytech. 1856. Corn Bluebottle. 
