OF ARTS AND SCIENCES : MAY 13, 1873. 643 



this species to its discoverer, Dr. J. M. Bigelow, because the genus 

 was named for the veteran botanist Dr. Jacob Bigelow. 



17. B. pulchella. Undique glabra; foliis viridibus anguste 

 linearibus uninerviis margine nunc serrulato-scabris, ramealibus subu- 

 latis ; involucri squamis lanceolatis acutatis eximie carinatis fere cori- 

 aceis apice viridibus ; pappi setis rigidulis. — Linosyris pulchella Gray, 

 PI. Wright. 1, p. 96, & Bot. Whippl. p. 43; Torr. in Sitgreaves' 

 Rep. t. 4. — New Mexico, near the Rio Grande, etc. Heads nearly 

 three quarters of an inch when in fruit and the pappus well devel- 

 oped, somewhat the largest of this section. 



h— ■*- Fruticulosa, ramis spithamaeis simplicioribus e basi decum- 

 bente. 



18. B. depressa. Glabra, scabrido-caesia ; foliis lanceolatis seu 

 oblanceolatis mucronato-acutis brevibus (semipollicaribus) rigidis ; in- 

 volucri squamis elongato-lanceolatis sensim acuminatis laevibus charta- 

 ceis concoloribus ; pappi setis rigidulis. — Ghrysothamnus. depressus Nutt. 

 PI. Gamb. p. 171. Linosyris depressa Torr. in Sitgreaves' Rep. p. 

 161. Mountains of the northern part of New Mexico: not "in the 

 sierra of Upper California, as stated by Nuttall : Dr. Gambell's speci- 

 men is ticketed " Rocky Mountains." Dr. Parry collected it in 1867 

 in the Sangre de Christo Mountains, and recently Mrs. A. P. Thomp- 

 son sent it from Kanab, Utah. Heads few in a terminal cluster, 8 

 lines long when fully developed. 



* * Achenia sericeo-pubescentia : capitula numerosa, minora (haud 

 ultra semipollicaria) : involucri squamae minus numerosa : pappus 

 corollam raro adaequans. 



+- Involucri squamae caudato-acuminatae. 



19. B. cerdminosa. Fruticosa, fastigiato-ramosissima, bi-tripedalis, 

 •tenuissime lanuginosa, mox glabrata saspeque resinoso-glutinosa ; foliis 

 filiformibus vel angustissime linearibus marginibus involutis, rameali- 

 bus saepius hamato-recurvis ; capitulis corymbuloso-fasciculatis ; invo- 

 lucro glutinoso, squamis lanceolatis carinatis praeter parinam viridulam 

 in acumen aristiforme recurvum eximie productam pallidis ; corollae 

 lobis lineari-lanceolatis ; pappo haud copioso. — Linosyris ceruminosa 

 Durand & Hilgard in Jour. Acad. Philad. n. ser. 3 (PL Heerm.) p. 

 40, & Pacif. R. R. Exped. 5, p. 9, t. 6. — Interior of California, at 

 Tejon Pass, Dr. Heermann. 



+- -i- Involucri squama? apice obtuso incrassato viridi. 



