BTTPATOEIACB^. 9 



soiDES (Willd. Sp. iii. 1754), paupercula (Gray, Proc. Am. 

 Acad. xvii. 205), KoTHKOCKii, (Gray, Syn. Fl. 102), heebacba, 

 Aeizonica (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. geandidejt- 

 TATA (DC. Prodr. v. 167), amplifolia (Gray, Am. Acad. xv. 

 28), B0OKYMYPOLIA (Greene, Pitt., iii. 31) bbllidifolia (Benth. 

 PL Hartw. 43), oreithales (Greenm., Am. Acad, xxxii, 308) 

 Pazcuarensis (HBK., N. Gen. N. & Sp. iv. 123), geandifolia 

 (Segel, Gartenfl. i. 102), ageeatifolia (DC, Prodr. v. 173), 

 ciLiATA (Less., Linn. vi. 404),glechonophtlla (Less., Ic. 105), 

 CALAMiNTHiBFOLiA (HBK., N. Gen. iv. 129), Donnbll-Smithii 

 (Conlt. Bot. Gaz. xvi. 95), coLLii«rA (DC. 1. c. 164), Espinosa- 

 EUM (Am. Acad. xv. 28), Benthami (Klatt. Leopoldina, xx. 90), 

 dbltoidea (Jacq. Schcenbr. iii. 63), Coahuilbnsis (Gray, Am. 

 Acad. xvii. 205), Guadalupensis (Spreng. Syst. iii. 414). 



On the Pacific slope of the United States we have no typical 

 Kyestenia ; 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. ocoidbntalis (Hook. Fl. i. 

 305). Among Mexican species of this habit are K. kobllijEFO- 

 LIA (Greene, Pitt. iii. 31), bebvipes (DC. Prodr. v. 168) and 

 some of the following here proposed as new. 



K. THYESIFLORA. 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 B. A. Goldman, and always distributed 

 for £. occidentalie var. Arizonicum; which is a strange proposition. 



