384 LXXVIII. COMPOSITÆ. (J. D. Hooker.) [ Zoegia, 
04*. ZOEGIA, Linn. 
Slender erect branched annuals. eaves, radical pinnatifid, cauline entire, 
Heads long-peduncled, heterogamous; flowers purple, outer l-seriate, neuter ; 
disk-fl. 2, fertile, tube slender, limb 5-fid to or below the middle,  Znvolucre 
ovoid or globose; bracts membranous, oo-seriate, outer shorter pectinately 
. ciliate, inner entire tips ciliate violet; receptacle densely bristly. Filaments 
glabrous; anther-bases sagittate, auricles minute connate. Style entire or 
emarginate. Achenes obovoid, compressed, shining, obscurely ribbed, basal 
areole lateral, top truncate crowned with 1—4 concentric ridges; pappus double 
or triple, outermost, if present, of short chaffy scales, middle one of long smooth 
bristles, inner of short bristles.—Disrris. 2-4, Mediterranean and Oriental. 
1. Z. purpurea, Fresen.; Boiss. Fl. Orient. iii. 698 ; 8-12 in., glabrous or 
Se saber very slender, invol. bracts deeply perais ciliate, inner with long 
air points, outer pappus of oblong chaffy scales, middle white longer than the 
glabrous achene, inner short subulate. Z. aristata, DC. Prodr. vi. 562. 
Norru West Inpia; between Kashmir and Wuzuristan, Stewart.—Disrrin. 
Westward to Persia, Arabia and Egypt. 
The specimens are small and withered, but I think referable to Z. purpurea. The 
outer chaffy pappus of this species is nowhere described, A very elegant plant, with 
bright purple tips to the invol. bracts. ; 
05. CENTAUREA, Zinn. 
Herbs, often rigid. Leaves radical and alternate, entire toothed or pinnatifid. 
Heads solitary corymbose or panicled, heterogamous (rarely homogamous), 
urple, violet, blue, white or yellow; outer-fl. l-s»riate, neuter; disk-fl. 9, 
fertile, tube slender, limb straight or oblique 5-fid to the middle or lower, of 
neuter fl. often larger with a spreading limb, Involucre ovoid or globose ; 
bracts oo -seriate, imbricate, appressed, margins scarious or coriaceous, or ending 
in a simple or palmately divided spine or a pectinate appendage ; receptacle flat, 
densely bristly. Anther-bases sagittate; auricles connate, tails long or short 
entire or lacerate. ` Style-arms with a thickened hairy basal ring, erect and con- 
nate or shortly spreading. Achenes oblong or obovoid, compressed or obtusely 
4-angled, often shining, basal areole oblique or lateral; pappus very various, 
bristles rigid or paleaceous, ©-seriate, entire serrulate Lon or feathery, 
rarely 0.—DrsrRIB. Species about 320, European and W. Asiatic, with a few 
N. & S. American and one Australian. 
The Centaureas are immigrants from the west into India, and except perhaps C. 
iberica and C. phyllocephala, are visitors rather than even denizens. 
l. C. Cyanus, Linn.; Boiss. Fl. Orient. iii. 634; annual or biennial, 
erect, slender, cottony, leaves narrow radical entire or lyrate-pinnatifid cauline 
linear, heads ovoid, invol. bracts oblong obtuse cottony, tip broad with brown 
scarious toothed margins which are decurrent on the sides of the bract teeth 
triangular, ray-flowers large spreading blue, achenes grey silky longer than the 
middle row of pappus-hairs. DC. Prodr. vi. 578; Clarke Comp. Ind. 242. 
C. lanata, Roxb. Fl. Ind. ii. 644. 
In corn fields and cultivated places of N.W. Ixp14; sporadie.—Disrrm. The 
Caucasus and westward to the Atlantie. 
The common corn-cockle of England. 
* The genus Zoegia is omitted in the conspectus of genera, p. 225, where its 
diagnostic character would be achenes with concentric ridges below the top. It is 
doubtful whether it was found within the British border, 
