224 MR. A. W. HILL ON THE 
Huayna-Potosi, Franz-Joseph Glacier, 4900-5200 m., К. Germann, 15 (Herb. 
Mus. Hamburg.) ! | 
Under the name Malva parnassuefolia, Weddell includes the variety 
B. lobulata, * crenis foliorum majoribus, lobuliformis,” one of the types 
of which is D'Orbigny's plant from Potosi, Bolivia, which bears the 
number 1355 and is also the type of Nototriche incisa, Turez. This plant 
proves to be identical with the type of Walpers's Sida nubigena, collected by 
Meyen near the southern end of Lake Titicaca. Weddell retained the 
species Malva nubigena and placed it in a special section (Chlor. And. ii. 
р. 276) “Flores involucello destituti," with his Malva oriastrum. He, 
however, suspects that an involucre may be present ; and this has been found 
to be the case in many specimens, though the involucral bracts tend to be 
either aborted or caducous. Malvastrum nubigena is thus properly placed in 
the genus, and does not occupy the anomalous position to which it was 
assigned by Weddell. The range of M. nubigena is very far removed from 
that of M. parnassiæfolium, and it appears that they are not closely related. 
The earpels of M. nubigena are entirely glabrous and the leaves are deeply 
lobed. This species shows fairly close affinity with M. Fiebrigii, Ulbrich, 
from 5. Bolivia and N. Argentina. 
M. nubigena 15 а somewhat variable species depending on the size and 
habitat of the individuals. ‘Those collected by Mandon growing in grass 
have very elongated petioles and peduncles and the leaf-lobulæ are finger- 
like. The arrangement of the stamens in this species is peculiar. АП the 
free portions of the filaments spring from the staminal tube at the same place 
and are of about the same length, giving the whole group of stamens the 
appearance of a small brush. 
9. MarnvasrRUM Hautaan, №. Ulbrich in Engl. Bot. Jahrb. xlii. (1908) 
p. 114. 
BorivrA: near La Paz, Раіса, Illimani, 4000 m., R. Hauthal, 347! 
3600-4800 m., №. Hauthal, 311 (Herb. Berol.) ! 
The leaves are deeply and irregularly lobed after the manner of M. nubigena, 
the lobule being obtuse or subacute ; the whole plant is hairy, the upper 
surface of the leaves being furnished with scattered hairs, the lower surface 
deusely stellate tomentose. The calyx is covered by a dense felt of long 
hairs springing from its base, and the involucral bracts are filiform. The 
rhizome in this species has a thickness of 1:5 em. in diameter and exceeds 
18 em. in length. In general appearance this species shows resemblance to 
M. Englerianum (ef. Ulbrich, l. e. p. 115), but differs particularly in the fruit 
characters : in that species the leaves bear hairs only on the veins and margins 
and the involucral bracts are broader and fringed with bristles. 
