46 Flora of tlie Malayan Peninsida. 



Heads -4 to "6 in. in diam., on slender erect solitary peduncles 3 to 8 in. 

 long. Cypsclas brown ; pappus shining, white. DC. Prod. V. 679 ; 

 Wall. Cat. 3197; Clarke Comp. Ind. 142; Hook. fil. Fl. Br. Ind. III. 

 311 ; Prain Bengal Plants, 618. 



In cultivated and waste places : an introduction. 



21. Centipeda, Lour. 



Annual or perennial herbs. Leaves alternate, entire or toothed. 

 Heads small, axillary, sessile or racemose, heterogamous, disciform, 

 yellow. Outer florets ? , in many rows, fertile, their corollas minute, 

 obscurely lobed. Disk-florets ^ , few, fertile, their corollas with short 

 tube and campanulate 4-fid limb. Involucre hemispheric, its bracts in 

 2 series, spreading in fruit ; receptacle naked. Anthers obtuse and 

 entire at the base. Style-arms of ? flower short, truncate. Cypsclas 

 4-angled, the apices obtuse, the angles hairy ; the hairs sometimes 

 hooked; pappus none. — Disteib. 43 species, Asiatic, Australian, and 

 ;South American. 



Centipeda okbicularis. Lour. Fl. Cochinch. III. 493. An annual 

 prostrate herb with numerous thin rooting stems, glabrous or sparsely 

 tomentose. Leaves obovate-oblong or cuneate, "2 to "5 in. long, sparsely 

 toothed. Heads *1 to -15 in. in diam., globose, solitary, axillary, sub- 

 sessile. Florets, $ minute, numerous, tubular, minutely 3-toothed ; 

 § 10 to 12, 4-toothed. Cypselas with simple hairs. Hook. fil. Fl. 

 Br. Ind. III. 317 ; Prain Bengal Plants, 620. C. minuta, Benth. in 

 Bth. & Hook. fil. Gen. PI. 11. 230 ; Clarke Comp. Ind. 151. Myriogyne 

 minuta, Less. ; DC. Prod. VI. 139. Cotula stemutatoria. Wall. Cat. 

 3259. C. minima, Willd. Sp. PI. III. 2170. Diclirocephala Schmidii, 

 Wight Ic. 1610. Artemisia stemutatoria, Roxb. Fl. Ind. III. 423. 

 A. minima, Linn. Sp. PI. 849. SpliceromorphcRa centipeda, DC. 

 I.e. 140. 



In all the provinces : by the sides of roads in cultivated ground, 

 not common. 



22. Artemisia, Linn. 



Herbs or shrubs, usually fragrant. Leaves alternate, 1- to 3-pinna- 

 tisect, serrate or entire. Heads small, numerous, racemose or panicled, 

 solitary or in fascicles (never corymbose), heterogamous or homogamous, 

 disciform. Outer florets ? , in a single series, fertile, very slender, 

 2- to 3-toothed. Disk-florets i , fertile or sterile, the limb 5-fid. Invo- 

 lucre ovoid, sub-globose or hemispheric ; bracts in few series, the outer 

 shorter, their margins scarious ; receptacle flat or convex, naked or 

 hairy. Anthers with entire obtuse bases. Style-arms of the ^ florets 

 with truncate, usually penicillate, tips. Cypselas very minute, oblong, 

 256 



