CENTAUREA CYANUS. 
Corn Brvur-BorrLE. 
CENTAUREA. Linn. Gen. Pi. SyNGENESIA POLYGAMIA FRUSTRANEA. 
Receptaculum. {etofum. 
Pappus fimplex. ^ Cor. radii infundibuli- 
formes, longiores, irregulares. 
Rati Syn. Gen. 9.. HERBH FLORE EX FLOSCULIS FISTULARIBUS COMPOSITO, 
SIVE CAPITAT&. 
CENTAUREA Cyanus calycibus ferratis, foliis linearibus integerrimis: infimis dentatis. Linn. Sy/. 
Vegetab. ed. 14. Murr. p. 785. Sp. Pl. ed. 3. p. 1289. F7. Suec. 5. 776. Lightfoot £7. 
Scot. v. 2. p. 499. Blue-bonnets. Scot. Auft. Hudf. FI. Angl. ed. 2. p. 375. 
CY ANUS foliis imis ellipticis, dentatis, fupremis linearibus, femiflofculis latiflimis. Ha//er Hi/f. n. 191. 
CENTAUREA Cyanus. Scop. Fl. Carn, 2. 5. 138. 
CYANUS fegetum. Bauh. Pin. 273. 
CYANUS vulgaris. Ger. Herb. p. 592. 
CYANUS minor vulgaris diverforum colorum. Park. Theat. p. 481. Rai. Syn. ed. 3. p. 198. Blue-bottles. 

RADIX annua, fubfufiformis, lignofa, fibrofa. 
= 
CAULIS ereGüs, bi-tripedalis, fubangulatus, tomento 
araneofo veftitus, fiftulofus, ramofus; Ram 
erecti, caule altiores. 
FOLIA caulina alterna, feffilia, linearia, 3 ad 5 nervia, 
acuta, pagina fuperior alba, tomentofa, infe- 
rior viridis, nudiufcula, infima radicalia in 
adolefcenti planta multo latiora, obtufiora, 
et fubintegra, iis proxima plus minulve den- 
tata, aut laciniata. 
FLORES laete cerulei, inodori; Pedunculi fimplices, 
fuperne incraffati. 
communis fubrotundus, imbricatus, {quamis 
lanceolatis, interioribus longioribus, integris, 
fuperne rufefcentibus, apice fibris fufcefcenti- 
bus ciliatis; exterioribus brevioribus, ferratis, 
ferraturis reflexis. 
COROLLA compofita, flofculofa, difformis, Coro//z/ 
hermaphrodite plurime in difco, fig. 2. femine 
pauciores, majores, laxe in radio, fig. 1. 
propr. hermaph. 1-petala, tubo filiformi, obli- 
quo, limbo ventricofo, oblongo, erecto, ter- 
minato laciniis 5-linearibus,  erectiuículis, 
femineis 1-petala, tubo tenui, fenfim ampli- 
ato, recurvo, limbo oblongo, inaequaliter 
divifo, fubplicato, laciniis lanceolatis. 
CALYX 
STAMINA JAermapbroditis: FILAMENTA 5, capillaria, 
breviffima; AnTHERA cylindracea, tubulata, 
corolla paulo longior. 
PISTILLUM hermaphroditis: GERMEN parvum; Srv- 
Lus filiformis, longitudine ftaminum ; Sric- 
MA obtufiffimum, acumine bifido prominens. 
Femineis: GERMEN minimum; STYLUS vix 
ullus; Stiema nullum. 
SEMINA  Zermapbroditis loltaria ; Pappus ietaceus, 
JS. 3 | 
Kos Or O11 C D 
^ 
OC OON CODO OX OO CO DDD. DYN! DD. DD DQ. Coo eoe CD oC Oo CDM CO D0 ' CO De DW Dt DQ Gt Qi Cx 
.$ ROOT annual, fomewhat fpindle-fhaped, woody, and 
fibrous. 
STALK upright, two or three feet high, fomewhat 
angular, covered with a kind of cobwebby 
down, hollow, branched; the Branches up- 
right, taller than the flalk. 
LEAVES of the flalk alternate, feffile, linear, from 
three to five-ribbed, pointed, the upper fide 
white, and cottony, the underfide green, with 
Ícarcely any cottony fubftance, the lowermoft 
radical leaves in the young plant much 
broader, blunter, and for the molt part entire, 
the next to them more or lefs toothed or 
jagged. : 
LOWERS of a bright blue colour and fcentlefs ; 
Flower-Stalks fimple, thickened above. 
ALYX common to all the florets, nearly round, imbri- 
cated, fcales lanceolate, the inner ones longeit, 
entire, reddifh above, fringed at top with little 
brownifh fibres; the outer ones fhorter,’ fer- 
rated, the teeth reflexed. 
COROLLA compound, flofculcfe, mifhapen; the 
hermaphrodite florets in the centre numerous, 
Jig. 2+ the female florets in the circumference 
fewer, larger, and loofe, jig. 1. each fingle 
hermaphrodite floret monopetalous, the tube 
filiform, oblique, the limb bellying, oblong, 
upright, terminating in five linear nearly up- 
right fegments, the female florets monopeta- 
lous, the tube flender, gradually enlarging 
and bent back, the limb oblong, unequally 
divided, fomewhat folded, the fegments lan- 
ceolate. 
STAMINA of the Zermapbrodite flowers: FILAMENTS 
five, capillary, very fhort; ANTHER« form- 
ing a cylindrical tube, a little longer than the 
corolla. 
PISTILLUM of the hermaphrodite flowers: GERMEN 
{mall; Srvrz filiform, the length of the fta- 
"mina; ST1GMA very blunt, with a prominent 
bifid point: Of the Female flowers: GERMEN 
very minute; STYLE Ícarcely any ; Sriema 
none. 
EDS from the Lermaphrodire florets, folitary ; Pap- 
pus or Down briflly, fg. 3. 
C 
S 
rz 
Few of the vegetable tribes are more hardy than the Corn Blue-Bottle; its feedling plants, which come up 
abundantly in Autumn, brave the fevereft frofts. 
The radical leaves are entire, thofe which follow ufually toothed, fometimes deeply jagged, hence foliis infe 
rioribus dentatis, would be more proper than z»fiz». 
We have reprefented a feedling plant, as it appears m the Spring; when the plant flowers, it lofes in common 
with many others its radical leaves, and with them part of its fpecific chara&ter. 
It grows abundantly in moft of our corn-fields, which it enlivens by the brilliancy of its flowers during the 
months of June and July: the hufbandman views it as a pernicious weed requiring his greateft care to eradicate, 
as it is not only very injurious to his corn, but blunts the fickles ufed in reaping it, whence its name of 2urz- 
Jfeckle found in fome old authors. 
Though a troublefome weed, agriculturally confidered, the beauty of its flowers has recommended it to the, 
garden, in which it is now regularly fown, as an ornamental plant, with other annuals, and appears with a 
great diverfity of colours. i 
A fine blue for colouring is faid to have been extracted from the bloffoms of this plant; we fhould ftrongly 
füfpe& the durability of colour fo obtained: the blue ufed by my artifls in colouring its outermoft petals is 
called azure blue, and may be had, by fuch as find a difficulty in obtaining good colours, of Mr. WirriAM 
Graves, Newington, Surrey, principal colourer of this work, whofe unwearied care to do juftice to his 
employer, has contributed not a little to advance the reputation both of the Flora Londinenfis and Botanical 
Magazine. - 
