97 
gined petiole; stem-leaves narrow'er and sessile: heads peduncled’ 
globose (about 6 lines in diameter), with involucre of triangular- 
lanceolate (broader at base) entire rigid thick-margined bracts 
(sometimes an inch long) much longer than the head ; bractlets 
the same and fully as prominent: fruit with lanceolate acuminate 
calyx-lobes longer than the short styles. — E. fetiolatum var, 
annatum Watson, Bot. Calif, i. 255. 
California, from San Diego (Orcuti), San Luis Obispo {Palmer 155, in 
part), through the central part of the state (numerous collectors) to Hum- 
boldt {Kellogg t€* Harford 1142) and Butte counties (Mrs. R. M. Austin). 
Distributed by Orcutt, Pringle, and Mrs. Austin as E- petiolatuyd 
Hook., from which it differs in its diffuse branching habit, short petioled 
radical leaves, broad entire rigid bracts and bractlets, all similar and con- 
spicuously longer than the head, and short styles. 
10. E. Vaseyi C. & R. Bot. Gazette, xiii. 142. Stems a 
foot or less high (sometimes reduced to 2 or 3 inches), several 
from a common root and branching above: leaves oblanceolate, 
unequally spinulose-serrate, attenuate below: involucre of narrow 
thick and rigid spinose and spiny-toothed bracts (sometimes an 
inch long) much longer than the head; bractlets the same: fruit 
with lanceolate acuminate-cuspidate calyx-lobes longer than the 
short stvles. 
In wet ground, California, San Antonio River, July, 1880 (G. R. Vaseg 
222, distributed as E. petiolaium), near Chico, Butte county (Airs. R. AI. 
Austin), near Merced, Merced county (Redfield 2477), near Mt. Shasta 
(F. H. Miller, in 1886); S. W. Oregon, near Medford (Howell, a much re- 
duced form), also by the Wilkes’ Expedition. 
This species is remarkable for its narrow very spiny bracts and bract- 
lets (often blue), much more rigid than in E. armahim, and spiny toothed. 
The calyx-lobes also have stronger cuspidate tips than in that species. 
11. E. petiolatum Hook, FI. Bor. -Am. i. 259. Erect, 1 
to 5 feet high, branching above (or from the base in low forms): 
radical leaves oblanceolate, spinosely and unequally serrate, attenu- 
ate in an elongated fistulous petiole (submerged leaves only of the 
terete jointed petiole); stem leaves mostly sessile: heads peduncled, 
globose (6 lines in diameter), with involucre of linear-lanceolate 
spinosely-tipped and toothed bracts (sometimes an inch long) longer 
than the head : bractlets lanceolate, cuspidate-tipped, but little longer 
than the flowers, scarious-winged below: fruit with calyx-lobes 
4 
