MACLOSKIE I COMPOSITE. 829 



ANTHEMIS COTULA Linn. 



Glabrous, glandular, fetid annual. Leaves finely dissected into sub- 

 filiform spreading segments. Ray-flowers 10-18, white, neutral. 



(Eur., naturalized in N. and S. Amer.) ; Patagon., at Rawson by mouth 

 of Rio Chubut (Dusen). Near RR. Gallegos and Sta. Cruz. 



49. ACHILLEA Linn. Yarrow. 



Herbs, with erect, leafy stem, the leaves alternate, finely dissected or pin- 

 natifid, or serrate ; and terminal corymbs of small heads, with yellow 

 disks and white or pink rays. Involucral scales few-seriate, imbricating, 

 smaller outwards. Receptacle with subtending chaff. Anthers basi-obtuse. 

 Style-branches truncate. Achenes oblong to obovate. Pappus none. 



Species 80, in N. Temperate regions, especially of Old World. 



A. MILLEFOLIUM Linn. 



Leaves finely dissected into narrow, pinnatifid segments, tomentose or 

 glabrous. Involucre ovoid. 



(N. Temp, regions of both Hemispheres, also in S. Austral, and N. 

 Zeal.); Magellan (Dusen). 



50. COTULA Linn. 



Low, cespitose or creeping herbs, with alternate, pinnately divided or 

 toothed leaves ; and rather small, heterogamous, disciform heads. Invo- 

 lucre broad, 2-seriate. Receptacle naked. Corollas of outer flowers con- 

 ical or none; of disk 4-merous. Anthers basi-obtuse. Style-branches 

 truncate or obtuse. Achenes compressed. Pappus none, or auriculiform. 



Species 40, in temperate and warmer parts of Old World ; also with 

 the section Leptinella, including 18 species, in the Southern Hemisphere. 



(LEPTINELLA, subgenus.) 



Receptacle at length conical ; the female flowers several-seriate, the 

 achenes 2-costate or 2-winged. 



Species 18, in Australia, New Zeal, and Chatham I. and the following 

 which are most of them, common to Australia and Western America. 



i. C. AOENOIDES (Hook. & Arn. sub Leptinella}. 

 Stoloniferous, subvillous. Leaves spatulate, pinnatifid, with oval seg- 

 ments, here and there incise-toothed ; the lower smaller, the upper greater 



