436 Anthemideae 



59. COTULA L. 



Low annual or perennial herbs with alternate lobed or 

 dissected leaves, and slender peduncled discoid short- 

 hemispheric heads. Involucral bracts in about 2 series, 

 greenish. Receptacle naked, flat or nearly so. Marginal 

 flowers pistillate and apetalous. Disk-flowers 4-toothed, 

 fertile or sterile. Achenes pedicellate, compressed, 

 spongy-margined or narrowly winged. Pappus none. 



1. C. cororiopifolia L. Perennial, usually subaquatic, some- 

 what succulent and glabrous; stems clustered, stoutish, decum- 

 bent, 25-30 cm. long; leaves linear-lanceolate, lacinjate-pinnatifid 

 or the upper entire, clasping or sheathing at the base ; heads 

 much depressed, 8-12 mm. broad; apetalous flowers in 1 row, 

 their achenes with a thick spongy wing; disk-flowers yellow, 

 their achenes with wing reduced. 



Common in wet places along streams and marshes, especially toward the 

 coast. Flowering nearly throughout the year. 



2. C. australis Hook. Annual, slender and diffusely branched, 

 pubescent with soft spreading hairs, not at all succulent, 5-12 cm. 

 long ; leaves 1-2-pinnately divided into linear lobes ; heads 2-3 

 mm. broad ; involucral bracts brownish-tipped, scarious-margined ; 

 apetalous flowers in 2-3 rows, pedicellate, their achenes minutely 

 hispid on both faces, the margins smooth. 



In waste places along streets, not common. January-March. 



60. ARTEMISIA L. 



Mostly aromatic and bitter herbs or shrubs with 

 alternate leaves and panicled spikes or racemes of small 

 discoid heads. Involucral bracts imbricated in few 

 series, the outer gradually shorter. Receptacle flat, 

 convex or hemispheric, naked or pubescent, not chaffy. 

 Marginal flowers pistillate and fertile, their corollas 2-3- 

 toothed. Central flowers perfect, sterile or fertile, or 

 flowers all perfect and fertile. Anthers often tipped at 

 apex with subulate appendages. Achenes obovoid or 

 oblong, 2-ribbed or striate, rounded or truncate at the 



