EUPATORIACES, 9 
sorpEs (Willd. Sp. iii. 1754), PAUPERCULA (Gray, Proc. Am. 
Acad. xvii. 205), RotHrockil, (Gray, Syn. Fl. 102), HERBACEA, 
ARIZONICA (Greene, Pitt. iv. 279, 280). 
This typical group has many representatives beyond our bor- 
ders in Mexico, Central and even South America, some herba- 
ceous, others shrubby, of which I cite but few. K. GRANDIDEN- 
TATA (DC. Prodr. v. 167), AMPLIFOLIA (Gray, Am. Acad. xv. 
28), EVONYMYFOLIA (Greene, Pitt., iii. 31) BELLIDIFOLIA (Benth. 
Pl. Hartw. 43), OREITHALES (Greenm., Am. Acad. xxxii, 308) 
PazcuaRENSis (HBK., N. Gen. N. & Sp. iv. 123), GRANDIFOLIA 
(Regel, Gartenfl. i. 102), AGERATIFOLIA (DC., Prodr. v. 173), 
CILIATA (Less., Linn. vi. 404), @LECHONOPHYLLA (Less., lc. 105), 
CALAMINTHZFOLIA (HBK., N. Gen. iv. 129), DONNELL-SMITHII 
(Conlt. Bot. Gaz. xvi. 95), corLINA (DC. 1. c. 164), ESPINOSA- 
RUM (Am. Acad. xv. 28), BENTHAMI (Klatt. Leopoldina, xx. 90), 
DELTOIDEA (Jacq. Scheenbr. iil. 63), COAHUILENSIS (Gray, Am. 
Acad. xvii. 205), GUADALUPENSIS (Spreng. Syst. iii. 414). 
On the Pacific slope of the United States we have no typical 
KYRSTENIA ; though a distinctively Mexican group of species 
with tufted stems from a woody base, alternate leaves, thyrsoid- 
panicled heads, and involucres not quite as simple, is represented 
in the mountains of California and northward by a single rather 
handsome pink-flowered species, K. occ1pENTALIS (Hook. FI. i. 
305). Among Mexican species of this habit are K. K@LLI#FO- 
LIA (Greene, Pitt. iii. 31), BREvIPES (DC. Prodr. v. 168) and 
some of the following here proposed as new. 
K. THYRSIFLORA. Stems stout, erect, herbaceous, 2 feet high 
or more, simple up to the contracted and somewhat thyrsiform 
inflorescence and very leafy, all the leaves alternate, pale but 
cinereous-scaberulous rather than glaucescent: leaves ovate and 
scarcely acute, or lance-ovate and acute, ascending on short 
petioles, distinctly or obscurely serrate-toothed: pedicels and 
biserial bracts of involucre densely scabro-puberulent : corollas 
white, with slender tube, short-funnelform throat and long 
spreading lobes: achenes not strongly angled, glabrous. 
Chihuahua, Mexico, chiefly southward in the State; collected 
by Palmer, Pringle and E. A. Goldman, and always distributed 
for Æ. occidentale var. Arizonicum,; which is a strange proposition. 
