366 AUTUMN FLOWERS AND FRUITS. 



receptacle excavated like lioney-comb ; fruit compressed, 

 four-cornered, furrowed transversely. 



ft Pappus pilose in many rows, unequal, the second row 

 longest, equal to or shorter than the fruit. 



(35) Centaurea — involucre imbricated, the scales leafy, sca- 



rious, or spiny in various ways ; receptacle paleaceous, the 

 scales jagged ; fruit inserted obliquely at the base. 



*** Florets all ligulate ; style not swollen (Cichoraceae). 

 t Pappus sessile, in one row. 



(36) 'Crepis — involucre double, the outer row short ; receptacle 



naked ; fruit terete, not ribbed, narrowed upwards or 

 beaked ; pappus of simple hairs, which are usually white. 



(37) Hieracium — involucre imbricated ; receptacle naked, or 



with a few short hairs ; fruit terete, ribbed, truncate and 

 margined above ; pappus of stiff tawny hairs. 



tf Pappus sessile, in many rows. 



(38) Sonchus — involucre oblong, imbricated, ovate at the base ; 



receptacle naked ; pappus short, hairy ; fruit compressed, 

 striated longitudinally. 



15. Ericaceous Plants. Ericace^. 



(39) Arbutus — calyx five-parted ; corolla globose or ovate-cam- 



panulate, with a small contracted border ; stamens ten, with 

 flattened filaments ; anthers furnished with two reflexed 

 awns ; berry globose, granular. 



16. Primulaceous Plants. Primulace^. 



(40) Cyclamen — calyx campanulate, five-cleft ; corolla with the 



tube ovate, the limb five-parted and reflexed ; stamens in- 

 serted in the base of the tube ; fruit globose, coriaceous, 

 or rather fleshy, many-seeded. 



