246 ; Utah Plants. [ZOE 
PEUCEDANUM LaPIDosuM. Loosely czespitose from long branch- 
ing roots which spread several feet under ground, the tops of whose 
branches bear the stems; top of root covered with the remains of 
old leaves; stems 1 to 4 inches long, sheathed with one to two stri- 
ate-veined, scarious, inch-long bracts; on the top of these stems is 
petioles 1 inch long, lowest ones greatly enlarged at base and stri- 
ate-veined; peduncles arising from amongst the leaves; there is 
often a very short node like the lower part of the stem above the 
first tuft of leaves from which the longest (6 to 8 inches) peduncles 
arise; flowers white, very small; petals nearly round, involucre 
none; involucels of several linear, not scarious, rather long bracts; 
rays nearly equal, '% inch long, several; pedicels 2 lines long; fruit 
oblong-oval, emarginate or retuse at both ends, 3 to 4 lines long 
and 2 to 2% lines wide; wings rather thick, 1% as broad as the body; 
intermediate ribs winged at base and tip but not in the middle of the 
fruit; oil-tube one in each interval, large, 8 to 10 on the commis- 
sure, these latter tubes sinuous, often interrupted and clustered next 
Allied to Pseudocymopterus, C. & R., but I doubt the validity of 
that genus. 
CyMOPTERUS DECIPIENS. Near to C. glomeratus, flowers golden- 
yellow; leaves similarly divided, but the segments are less divided, 
blunt or barely acute and oblong, while those of g/omeratus are. 
narrow and acute; involucres none or of several long linear bracts; 
involucels similar, but the larger central ones entire or with a single 
tooth very rarely, those of g/omeratus are otten palmately lobed ; 
rays often an inch long, but pedicels very short; carpels similar to 
glomeratus, but the wings very thick and spongy in the middle, with 
an abruptly contracted thin edge and also very thin next the seed, 
the broad edge. This ranks close to C. glomeratus, but differs in 
the ry. spongy wings of the fruit, ease leaves and yellow 
ers. The oil tubes are the same as in C. glomeratus. It grows 
