9OO PATAGONIAN EXPEDITIONS: BOTANY. 



ments. Scape little exceeding the subulate leaves, webby above, \-headed. 

 Involucral scales moderately large, numerous, oblong-linear, obtuse, 

 basally floccose, truncate, without setae. Ligules twice as long. Fruit? 

 (Argentina.) 



HYPOCHCERIS PHILIPPII GLABRESCENS O. Ktze. 

 Involucral scales broader, glabrescent, the lower ovate. 

 Patagon (M. & T.). 



13. H. TENERIFOLIA. (Remy, sub Achyrophorus.} 

 Stem nearly simple, over 30 cm., glabrous, except at the apex. Rad- 

 ical leaves of lance-linear outline, attenuate to a long petiole, weak, pin- 

 natifid, with narrow, oblique lobes ; cauline subentire. Involucral outer 

 scales obtuse, pilose with reddish exterior; inner membranaceous- 

 margined. Valdivia; Chiloe ; S. Fuegia (Dusen). 



14. H. TENUIFOLIA (DC. Prodr. sub Achyrophorus, 1838) Gris. 



Glabrous or subarachnoid. Stem simple. Leaves grass-like, radical, 

 filiform to linear-lanceolate, entire or sinuate, or pinnatifid, segments 

 linear. Scape i -headed. Involucre ovate-campanulate ; its scales linear 

 to linear-lanceolate, acuminate, webby and basally hispid. Variable. 



S. Patagon., Magellan ; Elizabeth I. (See note under H. coronopifolia. 

 Accepting Spegazzini's view, we have H. tenuifolia DC. as the species, 

 with varieties coronopifolia and variegata.} 



81. TARAXACUM Hall. (1768. Linn, sub Leontodon 1753.) 

 Herbs, with milky juice and radical, toothed to runcinate-pirinatifid 

 leaves. Scapes leafless, with i, rarely 2-3 heads, which are midsize to 

 large, yellow. Involucre campanulate to oblong, with i -seriate, erect 

 scales (changing in fruit), and several-seriate, shorter outer scales, usually 

 recurved. Achenes oblong, 4-5-angled, apically muricate and rostrate, 

 supporting the copious, slender, capillary pappus. 



Species 40, in north-temperate and cold climate ; few in south-temper- 

 ate, rarely in the tropics. (Fig. of fruit in Eng. & Prantl, iv, 5, p. 367, D.) 



i. T. IBARI Phil. 



Glabrous, with runcinate leaves (narrower than of T. taraxacum]. Scape 

 scarcely exceeding the leaves. Scales of involucre imbricate, all appressed, 



