206 english botany. 



Group C— POLIOSA. 



Stem leafy, without a basal rosette, corymbosely or paniculato- 

 corymbosely branched at the apex. Lower stem-leaves narrowed 

 at the base ; middle ones sessile or semi-amplexicaul ; uppermost 

 ones amplexicaul or semi-amplexicaul or sessile; all paler and 

 frequently slightly glaucous beneath, with the network formed by 

 the ultimate veins more or less conspicuous. Phyllaries numerous, 

 imbricated in several rows, dark, with pale margins, sparingly hairy, 

 sometimes with a few gland-tipped hairs, none of them squarrose 

 at the points. Achenes chestnut when ripe. 



SPECIES XXXII— HI ERACIUM COR YMBOSUM. Fries. 



Plate DCCCLY. 



Bah. Man. Brit. Bot. ed. v. p. 208. Fries, Epic. p. 123. 



H. rigidum, Bach. Mod. Hier. p. 76. Hooh. & Am. Brit. Fl. ed. viii. p. 322 (non 

 Hartm.). 



Stem very leafy, corymbosely or paniculato - corymbosely 

 branched at the apex, sub-glabrous, or sparingly clothed with 

 woolly hairs below and a little stellate down above ; peduncles 

 rather densely clothed with stellate down, but with few or no 

 gland-tipped hairs. Leaves dispersed over the whole stem ; the 

 lowest ones oblanceolate, narrowed towards the base, sub-petiolate, 

 with very short broadly-winged petioles ; intermediate ones rhom- 

 boidal - elliptical or -oval-elliptical, attenuated towards the base, 

 semi-amplexicaul or sessile, acuminate ; uppermost ones lanceolate 

 or ovate-lanceolate, rounded and semi-amplexicaul at the base, acu- 

 minate or attenuated towards the apex ; all more or less strongly 

 serrate-dentate in the middle with the teeth rather remote and 

 very acute, glabrous above, pale and slightly glaucous beneath, with 

 the network formed by the ultimate veins rather conspicuous, sub- 

 glabrous, frequently with distant short hairs on the veins and 

 margins. Anthodes moderately large, numerous, in a compound 

 corymb or short panicle terminated by a corymb, with rather 

 slender spreading-ascending peduncles generally furnished with a 

 few minute bracts which usually do not pass gradually into the 

 outer phyllaries. Pericline hemispherical at the base ; phyllaries 

 rather numerous, obtuse, the inner ones much broader than the 

 others, dark-olive with paler margins ; all sparingly sprinkled along 

 the middle line with short whitish hairs and a few gland-tipped 



