442 DESCRIPTIONS OF NEW SPECIES 
ours a stout perennial, with large deeply penetrating roots; very smooth and sometimes glaucous ; 
the panicle spreading, not racemose. Flowers as large and showy as those of Cichorium Intybus. 
Nearly allied to the preceding, which, however, appears to have different leaves, but with the fruit 
very similar, 
+ t Flowers blue or white; achenium shortly acuminate. 
Mulgedium acuminatum. Sonchus acuminatus, W1tup. Achenium pale and 
spotted, with a tumid margin and two or three strie on either side. 
Mulgedium * divaricatum; branch leaves sessile, somewhat runcinately pin- 
‘natifid with wide and shallow denticulated segments; panicle divaricate, naked ; 
involucrum subcampanulate, caliculate; achenium with a short, conformable 
rostrum, transversely rugulose, with about three elevated central strie on either 
side; pappus white. 
.. Has. Louisiana. (Mr. Trudeau.) The flower appears to have been blue or white; segments 
of the caliculum lanceolate. Bractes of the very divaricate panicle minute, distant, and subulate. 
Apparently a very distinct and genuine species of the present genus. 
§ LevcomeLa.— With the pappus gray; florets nearly half way tubular; anthers 
bisetose at the base. Achenium transversely rugose, merely attenuated at the 
- summit, with three ribs on one side and four or five on the other; flowers white, 
nith a tinge of purple. 
Mulgedium leucopheum, Decanpv., Vol. VII., p. 250. 
* GALATHENIUM. 
(Lactuca and Mulgedium species of authors.) 
Wei ceninit but with the achenium elliptic and flatly compressed, transversely 
rugulose, with a broad and thin opaque margin, the centre on either side 
marked with one to three slender strie; the rostrum distinct, abrupt, shorter 
than the achenium, ending in a circular disk with a pubescent margin. 
Sat oe white, slender and slightly scabrous, in several series —North Ame- 
~~ rican plants, usually perennial, with the habit of Lactuca or Sonchus; the 
“were yellow or blue; the achenium black—(The name from yaralnvos, 
milky, in allusion to the milky properties of the plants, and also their alli- 
ance with Lactuca.) 
