348 COMrOSIT.ii:. Balsumor/uza. 



1. B. Hookeri, Nutt. Canescent with fine mostly soft and close pubescence: 

 leaves usiiully oiico or twice ])innately parted or divided, lanceolate in outline, a 

 span to a loot long, s|)reading ; the divisions crowded, comuumly incised : scapes 

 naked or 2-leaved near the base, equalling or surijussing the leuvos in length, bear- 

 ing a single head : scales of the involucre linear or lanceolate, acuminate, ran-ly 

 some of the outermost broailer and loliaceous. — Hdiopsis (() baUamorhUa & tere- 

 binthacea, Ilo(jk. Itulsamorhiza Hookeri, terebinthacea, hirsuta, & incaiia, Nutt. in 

 Trans. Am. Phil. SStjc. n. ser. vii. 34 1). 



Hills near Oiikliiml, Kellogg. Near Suiioinii, ^ii/o'/ow (wrongly named B. mncrophylla). On 

 the eastuni sidu of the SiiTiu Neviula, Jiloomei; Anderson, Leinmon. CoiuiiKin on tho plains of 

 Novudii, Oregon, kc. li. lursula is a form with more hirsute pubesceni'e : 1!. incaua, a variety 

 remarkable for its soft and white wool : />'. liicbiiUluia'.a, with roughish |iiiliesceiu:e, has some 

 of the leaves merely iueised or sharply toothed, others pinnately-iiarted or piiuiatilid. 



2. B. sagittata, JSIutt. ISilvery-canescent with dense mostly appressed soft 

 wool : leaves entire, cordate-sagittate or sometimes deltoid-hastate, 4 to 9 inches long, 

 on still longer petioles, all radical, or one or two small lanceolate jjetiolate bracts on 

 the scape, which bears a single or sometimes 2 or 3 heads : involucre mostly very 

 woolly. — Buphthaimuni sayittatum, Pursh. Es])eletia sagittata & heliant/ioides, 

 Nutt. in Jour. Acad. Philad. vii. 38. Balsamorhiza (Artorhiza) sagittata & heli- 

 anthoides, Nutt. in Trans. Am. Phil. Soc. 1. c. 



Eastern side of the Sierra Nevada, on the Iwrders of the Stafp, &c. (Jndnson, Bloomer, Wat- 

 son) ; thenee to and beyond the Koeky AU)uutains from Colorado to hluho and Dakotah. 



3. B. deltoidea, Nutt. Green and more or less pubescent, or almost glabrous : 

 leaves deltoid-cordate or more broadly and deeply cordate, more or less serrate, occa- 

 sionally entire, 3 to 9 inches long and on longer petioles, all radical, or 2 or 3 small 

 ones or bracts on the scape : heads solitary or rarely a pair : scales of the involucre 

 lanceolate or linear, obtuse. — B. glabrescens, Benth. PI. Hartw., is only a smoothi.sh 

 form, with leaves entire. 



Mcjist ground, fiom Tejon and Ojai to Humboldt Co. and Oregon. Akenes flat, those of the 

 disk eompressed ; of the ray obeompressed, as they are in all these species. 



4. B. Bolanderi, (Jray. (Jlabrous or glabrate, somewliat glutinous; a span to 

 a foot high, witli mostly scales instead of leaves from the rootstock : leaves about 3, 

 alternate along the stout stem, cordate or ovate, entire, 3 or 4 inches long, on 

 moderately long petioles : head solitary, short-peduncled ; outer scales of the invo- 

 lucre oval or ovate-lanceolate, acuminate or acute, foliaceous ; the inner ones nar- 

 row and very villous, resembling the chaff of the receptacle. — Proc. Am. Acad, 

 vii. 356. 



Auburn (Bolavdcr), and on the Upper Saciamento, Fremont, Bach. Head largo. Akencs flat, 

 of the disk compressed, of the ray obeompressed. 



45. WYETHIA, Nutt. 



Head many-flowered, hcterogamous, with fertile ray-flowers and perfect disk- 

 flowers. Involucre hemispherical or campanulate, of 2 or 3 series of scales ; the 

 outermost foliaceous and often enlarged, the innermost mostly smaller and chaffy. 

 Koceptacle Hat or m^arly so ; the rigid linear or lanceolate chaff subtending the disk- 

 flowers flattish or partially folded around the akenes. Kays elongated : disk-corollas 

 cylindrical, 5-toothed, glabrous or nearly so. Branches of the style in perfect 

 flowers produced into subulate-fdiform hispid appendages. Akenes prismatic-quad- 

 rangular, or those of the disk laterally compressed, and with obtuse or acutish 

 angles, nervose, their broad summit continued into a persistent and firm chaffy-cori- 

 aceous crown or cup, which is uno(iually cleft into 5 or more lobes or teeth, or is 



