OF ARTS AND SCIENCES : MAY 13, 1873. 641 



which it resembles, except in the woody stem, and the unequal more 

 copious bristles of the pappus. The alveoli of the receptacle are 

 produced into subulate teeth. 



§ 3. Chrysothamnopsis. Involucrum 5 - 15-florum, cylindraceum ; 

 squamis lanceolatis acurainatis siccis (plerumque chartaceis nee 

 herbaceo appendiculatis vel notatis) spiraliter imbricatis: corollas 

 limbus angusto-infundibuliformis breviter 5-lobus : appendices 

 styli subutato-filiformes Ghrysothamni : achenia angusta, elon- 

 gata, sericeo-pubescentia : pappi setas tenues subaequales : folia 

 angusta, subtrinervia, integerrima. (Transitus ad Aplopappum 

 per A. Macronema.) 



13. B. Bolanderi. Suffruticosa, humilis, subviscosa ; ramis lana 

 valde implexa adpressissima dealbatis ; foliis spa'thulato-linearibus ob- 

 lanceolatisve acutatis baud rigidis (circiter pollicaribus) ; capitulis 

 subcorymboso- vel subracemoso-congestis plerisque folio seu bractea 

 folioso stipatis ; involucro 7-11-floro; squamis circa 10 lanceolatis 

 sensim acuminatis nudis: alveoli receptaculi paleaceo-dentiformibus. — 

 Linosyris Bolanderi Gray, Proc. Am. Acad. 7, p. 354. — Mono Pass 

 in the Sierra Nevada, California. The narrow heads are three 

 quarters of an inch long. This species is so obviously and closely 

 related to Aplopappus Macronema {Macronema discoidea Nutt.), that 

 it might be better to refer that plant to this genus, the line, wherever 

 drawn, being almost arbitrary. Bolander found both at Mono Pass, 

 and at nearly the same elevation. 



14. B. Howardii. Suffruticosa, humilis, ramosissima, pi. m. lanata, 

 mox glabrescens ; foliis linearibus rigidis (1 - 2-pollicaribus) uninerviis, 

 superioribus capitula pauciuscula subcongesta fulcrantibus paulloque 

 superantibus ; involucro 5-floro, squamis 12—15 oblongo-lanceolatis 

 primum arachnoideis aut sensim aut extimis subito caudato-acuminatis ; 

 corolla? tubo parce villosulo. — Linosyris Howardii Parry in Proc. Am. 

 Acad. 6, p. 541. — Var. Nevadensis. Rigidior ; foliis latioribus 

 sursum pi. m. dilatatis nunc obsolete trinerviis ; involucri magis arach- 

 noidei subviscosL squamis subcoriaceis, siccis apice recurvis. — L. How- 

 ardii var. Nevadensis Gray, 1. c. — Gravelly soil in the " parks " of 

 Colorado, extending to the Sierra Nevada, where it is chiefly the var. 

 Nevadensis. Receptacle paleaceous-dentate, almost as in the preced- 

 ing. The scales of the involucre, more numerous than in the preced- 



VOL. VIII. 81 



