OF ARTS AND SCIENCES. 279 



katchewan aud the mouutaius of New Mexico : along its western range 

 seemingly confluent with 



C. LANCEOLATA, Pursh. The cauline leaves of this are sessile, and 

 vary from oblong to lanceolate, aud the petals are emargiuate or obcor- 

 date. Pursh's N. W. Coast and Siberian specimeus, referred to this, 

 probably are of G. arctica. 



C. UMBELLATA, Watsou, Bot, King Exp. 43, t. 6, f. 4, 5, & Bot. 

 Calif, i. 77. The corm is usually obversely napiform : radical leaves 

 not seen ; cauline obovate and long-petioled. Known only from Ne- 

 vada, near Virginia City ( Watson, Mann), and from Stein Mountain, 

 E. Oregon, where recently collected by Howell. 



* * Caudicose, a rosulate cluster of radical leaves, surrounding scapi- 

 form flowering stems, directly from the veiy thick crown or perpen- 

 dicular caudex, which is prolonged below into the fleshy tap-root : 

 wing-margined petioles of radical leaves scarious-dilated and as it 

 were sheathing at base : no sarmentose shoots or offsets : inflores- 

 cence racemiform or subcymose, with or without some small scari- 

 ous bracts : petals white or pale rose-color. 

 C. MEGARRHiZA, Parry, in Watson, Bibl. Ind. 118. C. arctica, var. 

 megarrhiza, Gray, Am. Jour. Sci. xxxiii. 406, & Proc. Acad. Philad. 

 1863, 59. This commonly bears two or three small alternate leaves 

 or foliaceous bracts (spatulate-lanceolate or narrower and tapering at 

 base) near the flowers, at least in the Colorado Rocky Mountains. 

 In the mountains of Oregon, it nearly approaches the next. 



C. ARCTICA, M. F. Adams. Distinguished from the preceding by 

 the short racemiform cyme much surpassing the radical leaves, the 

 cauline leaves ovate or broadly oblong and sessile by a broad base ; 

 from the next by the broad and obtuse leaves. It is the C. Joanneana, 

 Roem. & Schult. Syst. v. 434, a name happily two years later than 

 that of Adams. It extends from the Alaskan shores and islands to 

 adjacent Asia, and even to Altai. 



C. TUBEROSA, Pall. May pass into the preceding, but has narrower 

 and acute leaves, from lanceolate-obovate even to linear-lanceolate. It 

 is the C. acutifolia as well as the C. tuherosa of Pallas, as published 

 by RcEmer & Scliultes from Willdenow's manuscript notes ; the latter 

 name to be preferred, the more so because the former has been used 

 by Ledebour for a figure of the C. arctica. The most narrow-leaved 

 form is C. Eschscholtzii, Cham, in Linntea. This is mainly Asiatic, but 

 comes near to us on Arakamtchetchene Island near Bering Strait, by 

 Wright, and at Plover Bay by Rothrock ; aud Muir collected it some- 

 where in Arctic Alaska. 



