152 COROLLTFLOR^ 



24. Chrysocoma (Goldylocks). — Involucre a single row of loosely 

 spreading scales ; receptacle honeycombed ; fruit flattened, silky ; 

 pappus hairy, rough. (Name from the Greek, chrysos, gold, and 

 come, hair.) 



25. DiOTis (Cotton-weed). — Pappus ; corolla with two ears at 

 the base, which remain and crown tlie fruit. (Name from the Greek, 

 Ms, double, and ous, otos, an ear, from the structure of the fruit.) 



26. Tanacetum (Tansy). — Involucre cup-shaped, imbricated ; re- 

 ceptacle naked ; fruit crowned with a chaffy border. (Name altered 

 from the Greek, athanafon, everlasting). 



' 27. Artemisia (Wormwood). — Pappus ; involucre roundish, 

 imbricated, containing but few flowers. (Named after Artemis, 

 the Diana of the Greeks.) 



28. Antennaria (Everlasting). — Stamens and pistils on separate 

 plants ; pappus hairy, that of the barren flowers thickened or 

 feathery upwards ; involucre coloured, rigid. (Name from the 

 antenncB of an insect, which the pappus of the barren flower re- 

 sembles.) 



29. Gnaphalium (Cudweed). — Involucre roundish, dry, imbri- 

 cated, often coloured ; receptacle naked ; pappus hairy. (Name 

 from the Greek, gnaphalion, soft down, with which the leaves are 

 covered.) 



30. Filago. — Invohwre tapering upwards, imbricated, of a few 

 long, pointed scales ; receptacle chaffy in the circumference ; pappus 

 hairy ; florets tew, the outer ones bearing pistils only. (Name from 

 the Latin, filum, a thread, the whole plant being clothed with white, 

 thread-like hairs or down.) 



31. Petasites (Butter-bur). — Invohwre a single row of narrow 

 scales ; receptacle naked ; stamens and pistils, for the most part, 

 on different plants. (Name from the Greek, petasos, a covering for 

 the head, from the large size of the leaves.) 



IV. Radiatj?. — Daisy Group 



32. Tussilago (Colt's-foot). — Involucre a single row of narrow 

 scales ; receptacle naked ; florets of the ray narrow, in several rows ; 

 of the disk few, all yellow. (Name from the Latin, tussis, a cough, 

 from the use to which it is applied.) 



33. Erigeron (Flea-bane). — Involucre imbricated with narrow 

 scales ; receptacle naked ; florets of the ray in many rows, very 

 narrow, different in colour from those of the disk. (Name in Greek, 

 signifying growing old at an early season, from the early appearance 

 of the grey seed- down.) 



