OP ARTS AND SCIENCES. 275 



1861, 492; Gray, Proc. Am. Acad. x. 59, & Syn. Fl. ii. 195. E. 

 heliotropioides, Torr. Bot. Mex. Bound. 140, pro parte, excl. syn. 

 Amsinckice spec, Benth. PI. Hartw. no. 157. — Hispida, e caule 

 steplus erecto solute ramosa ; spicis folioso-bracteatis, fructiferis laxi- 

 floris ; nuculis (f lin. longis) opacis obtuse papillatis lateribus rotun- 

 datis, areola insertionis triangular! ampla excavata. — As this species 

 extends well into Mexico, and accords with both Lebmann's and 

 Kunth's accounts (published in the same year), the specific name 

 under which the former found it in Willdenow's herbarium is here 

 restored. [This identification is confirmed by Dr. Eichler, through 

 a reference to the original specimens of Humboldt in the Berlin 

 herbarium.] 



«-f -H- ++++++ ++ CrehrihracteatcB, parvula?, pube tenui : nucule ova- 

 to-lanceoIatfB, acuminatre (semilineam longce), baud angulata^, aut 

 Iccves nitidulje. aut minutim papilloso-scabrje et opacte, sulco an- 

 gustissimo inferne parum latiori tota longitudine gynobasi filiformi 

 seu tenuiter columnari adfixre : stylus srepius incrassatus : sepala lato- 

 lanceolata, fructifera lineam longa, baud setosa, costa obscura : spicge 

 breves, condensatoe, congestJB, bracteis foliosis flores superantibus. 



K. MTCRANTHA. Eritrickium micranthiim, Torr. Bot. Mex. Bound. 

 141. Pube brevi griseo-hirsuta, limbo corolla? vix lineam lato. 



Var. LEPIDA. Eritrickium micranthum^ var. lepidum. Gray, Syn. 

 Fl. ii. 193. Magis hispidula, limbo corolliB ad lin. 2i diametro. — The 

 two forms are confluent. The nutlets of both at full maturity are more 

 commonly covered with minute papilla}, but sometimes they retain 

 their smoothness. 



* * PiPTOCALTX, i.e. calyx (5-fidus, villoso-hispidus) supra basim fruc- 

 tum fulcrantem demum circumscissus et secedens : anthera? mucro- 

 nulatae : fructus Euttjpicarum, nuculis ovato-acuminatis la^vihus vel 

 puncticulatis angulis lateralibus acutis sulco ventrali tenui basi diva- 

 ricato-furcato tota fere longitudine Jiviiobasi subulatoe adfixis : herba 

 depresso-ramosissima, condensata ; foliis brevibus linearibus ; spicis 

 etiam fructiferis brevibus glomeratis crebre folioso-bracteatis ; co- 

 rollis parvis. — Piptocalyx, Torr. 



K. CIRCUMSCTSSA. Lithospermum circitmscissum, Hook. & Arn. Bot. 

 Beech. 370. Piptocalyx circumscissus, Torr. in Wilkes Exped. xvii. 

 414, t. 12, B. Eritrickium circumscissum, Gray, Proc, Am. Acad. x. 

 58, Bot. Calif, i. 572, Syn. Fl. ii. 193. — Extends through the arid 

 districts from Wyoming to AVashiugton Territory, and south to 

 Arizona. 



