“ay 
A) tn 4 pli ma 
142 BOTANICAL GAZETTE. [ June, 
petiolatum, from which it differs in its low, diffuse Mie 
habit, short petioled radical leaves, broad entire nee bee A 
and bractlets, all similar and conspicuously longer than 
head, and short styles. 
and branching above: leaves unequally spinulose-serrate, 
attenuate below: involucral bracts and_bractlets ber 
thick and rigid, spinose and spiny-toothed, much Bee 
than the head: calyx-lobes lanceolate, acuminate-cuspidate, 
Antonio river, July, 1880 (G. R. Vasey 222, distributed as 
LE. petiolatum : ae Chico (Mrs. R. M. Ants S. We 
Oregon, near Medford (Howell, a much reduced fie. : 
This species is remarkable for its narrow, very spiny ge d 
and bractlets, much more rigid than in £. armatum 
Spiny-toothed. The calyx-lobes also have stronger cuspidate 
tips than in that species. : ce 
ryngium articulatum Hook. Erect, 1 or 2 feet high, mor 
. * m- — M 
or less branching throughout: radical and lower ste 
: <<) eek ed 
leaves reduced to very long (sometimes a foot long) joint 
: re 
_- petioles, with or without a small lanceolate blade (from enti 
to laciniately toothed): involucral bracts linear, cusp 
tipped and spiny-toothed (about half-inch long), nee he 
the head ; bractlets tri-cuspidate, the middle one muc 
: ase d, ville 
. petiolatum, var. juncifolium Gray, Proc. Am. Acad. 
385.—Swamps aaa oe co ows, Washington Lone? 
Falcon Valley ( Suksdorf); Oregon (Nuttall, Hall 200, 
ell, Henderson J; Californi 
Austin). N 
prominent ; but it is simply owing to the immaturity of 
paps. This is the western representative of the easte 
Irginianum group.! ty 
Pencedanum Martindalei, 1, sp. Resembling P. Halu 
E. 
- lections ca 
'The following s ; among Florida ¢o 
. abele _ oe seals es by & member of this group, turns up nie above: lower 
mum,n.sp. Erect, 2 or 3 feet high, somewhat brane : ; 
es narrowly ene to 4 inches long), mostly entire, on lone Astolous ly Fa oe 
> serrulate : invdine 8); Upper ones coming sessile, elonga pa sb: 
8, and ve ng rigi sty] B kish E aot er he beg Teen ( ’ of 4 
ackson ville (Curtis). “Distre rage racks. marshes, Fiori "acifering trom all spesiel 2° 
that group in its Sate bration 88 E. prealtum Gray, but ’ 
