888 PATAGONIAN EXPEDITIONS: BOTANY. 



3. Leaves pinnatifid. 



c. Lobes 5 pairs, entire, with a terminal 3-lobed. candidissima. 



c2. Lobes 6-8, imbricate. Scapes in pairs. Flowers dark-purple. hoffmanni. 



64. Leaves pinnatisect ; segments 7 pairs, 3-lobed. Flowers purple. purpurea. 



b$. Woolly and green. Leaves pinnatisect, the lobes 3-lobed, decussate-imbricate. Flowers 

 white to pink. scrobiculata. 



i. LASIORRHIZA ACHILL>EIFOLIA (Hook. & Arn., sub Leuceria]. 



Stem slender, 15-20 cm. high, dichotomously branching, puberulous. 

 Leaves remote, bipinnatifid, the segments small, ovate, obtuse, their axils 

 and rachis rather woolly. Invohicre campanulate, its scales linear-oblong, 

 obtuse, tuberulous. Ligules oblong. 



Patagon., at Puerto Deseado. 



2. L. ANTHEMIDIFOLIA (Phil., sub. Leitceria] O. Ktze. 



Low perennial to 25 cm. high, branching from the base, rather gla- 

 brous, glandular. Leaves of linear outline, bipinnatifid,' the segments 

 linear, entire or incised, acute. Lowest leaves long petioled, the upper 

 sessile and gradually simpler, lastly linear bracts. Heads with rather 

 long peduncles ; involucral scales dorsally and apically glandular ; the 

 inner with scarious sides. 



Patagon., near Lago Pinto. 



3. L. CANDIDISSIMA (Gill. & Don., sub. Leuceria]. 



Stemless, with snowy wool. Leaves incised pinnatifid ; the lobes, 5 

 pairs, ovate-oblong, acute, entire, and a terminal 3-lobed part. Scape 

 nearly naked, i -headed. 



(Chili; Argent); S. Patagon., by head of Rio Chico (J. B. Hatcher, 

 Feb. 9, 1897); Fuegia. (Fuegian specimens are lower, with fewer lobes of 

 leaves and less deeply cut ; often like L. hahni, having some entire rad 1 

 ical leaves. Speg.) 



4. L. FUEGINA (DC., sub Chabrcea] O. Ktze. 



Stemless, arachnoid-woolly. Leaves erect, the lowest pinnatifid, but 

 most oblanceolate, attenuate to a long petiole, entire. Pedtmcles radical, 

 nearly leafless, i -headed. Involucral scales rather obtuse. Ligules pink. 

 Near L. candidissima}. 



(Chili) ; Patagon. ; E. and N. Fuegia ; Magellan (Dusen). 



