492 SYNGENESIA : POLYGAMIA FRSTRANEA. 



POLYGAMIA FRUSTRANEA. 



CENTAUREA. Gen. pi 984. 

 Recept. fetofum. Pappus fimplex. Cor. radii, in 

 fundibuliformes, longiores, irregulares, 

 Cyani. caiycinis fquamis ferrato-ciliatis. 

 nigra i. CENTAUREA calycibus ciliatis ; fquamiila ova- 

 ta, ciliis capillaribus ereflis, foliis lyrato-angu- 

 latis, floribus fiofculofis. Sp.pl. 1288. [Ger. em. 

 727./. I. Pet. herb. t. 22. f. 8^9. Parkin/on. 

 herb. 468.) 

 Common Black Knapweed. Anglis, 

 The Horfe-Knot. Scotis aujiralibus. 

 In meadows and pflftures not unfrequent, both in 



the highlands and lowlands. <? . VIII. 

 The ftalk is two or three {^qx. high, firm, branched 

 and angular: the leaves are rough and hard, 

 the lower ones pinnat'W half way down to the 

 rib, or elfe fparingly indented ; the upper ones 

 oval-lanceolate and entire. Sometimes it varies, 

 with all the leaves entire : the flowers are pur- 

 ple : the florets all tubular and hermaphrodite, 

 no neuter ones in the rim : the calyx is black, 

 and well exprcfs*d in the fpecific difl^erence. 



.^„„, . CENTAUREA calycibus ferratis, foliis lineari- 

 bus integerrimis, infimis dentatis. 8p. pi. 1289. 

 (Ger. em. 732./. 2. Pet. herb. t. 22. /. 4. Moris, 

 hjft.f.']. t. 25. /. 4. Blackwell t. 270.) 



Blue- 



