APPENDIX. 461 



9. N. DiCHOTOMA, Eulz & Pav. Piibesconoe more or less viscid ; corolla scarcely exceeding tlio 

 calyx; capsule rather sliort-oWong ; seeds i-i" long, oval-oblong, coarsely pitted.— Mexico to Bolivia. 

 Var. ANGUSTJFOLIA, Gray. Leaves linear-lanceolate.— New Mexico and S. Colorado. 



10. N. LATiFOLiA, Gray. Leaves all sleuder-petioled ; seeds nearly smooth.— S. W. Mexico. 



- • ' Perennial or perhaps annual, with a somewhat woody hasf, and a very soft pubescence ; 

 leaves not exceeding i' in length ; seeds very small. Mexican. 



11. N. KUPICOLA, Bonpl., and 12. N. oeiganifolia, HBK. 



* * * * Perennial, somewhat shrubby at base ; pubescence hispid or silky-oauescent ; leaves and 

 flowers larger. 



13. N. HIESUTA, Mart. & Gal. S. W. Mexico. 



14. N. SEEiCEA, Willd. Mexico. 



15. N. LoBBii, Gray. Pubescent with a webby wool ; leaves lanceolate, attenuate to a scarcely 

 petioled base ; flowers crowded in sessile axillary and terminal clusters ; sepals narrow, not dilated 

 upward..— Sierras of California. 



MERTENSIA. 



Revised by Dr. Geay in Amer. Jour, of Science, Vol. XXXIII, p. 339, (1862.) 

 § 1. Filaments slender, much longer than the anthers ; corolla-tube several times longer than the 

 deeply 5-oleft calyx, the limb very slightly lobed, the throat without folds. 



1. M. Vieginica, DC. From W. New York to Wisconsin and Iowa and southward to S. Carolina 

 and Tennessee.' Arctic coast, (Af. Drummondii, Don.) 



J 2. Filaments more or less narrower and longer than the anthers ; limb of the coroUa lobed. 



2. M. MAEITIMA, Don. Corolla-tube shorter than the limb, about equaling the sub-.5-parted calyx, 

 the folds conspicuous.- From Greenland to Behring Strait and southward on the coast to Cape Cod and 

 Washington Territory. N. Europe and Asia ; Japan. 



§ 3. Filaments more dilated, as broad as the anthers or broader, and more or less shorter ; corolla- 

 limb 5-cleft. 



* Calyx not cleft below the middle. 

 3 M. Feistdleei, Gray. Stem and lower side of the leaves smootli, the upper surface aud the pedi- 

 cels finely appressed hispid ; cauline leaves oblong-lanceolate ; racemes few-flowered ; corolla-tube 

 scarcely longer than the limb and the broad-lanceolate lobes of the hirsute calyx, with a hairy ring on 

 the inside above the base ; disk more or less 2-lobed. — New Mexico, (Fendler.) 

 * * Calyx 5-parted or sometimes deeply 5-cleft. 

 {a.) Corolla-tube 2-3 times longer than the upper dilated portion, (the limb.) 



4. M. OBLONGIFOLIA, DC. Low ; cauline leaves oblong or spatulate-lanceolate, mostly obtuse ; 

 calyx-segments lanceolate or linear, acute, 2-3 times shorter than the corolla-tube, which is naked 

 within. See page 238. 



(6.) Corolla-tube not more than a half longer than the limb. 

 (1.) Tallj 1-3° high; cauline leaves ovate or dvate-lanoeolate,'very sharply acuminate or acute, 

 costate-veined ; corolla J' long or a little more. 



5. M. PANIOULATA, Don. Hirsute, roughish or glabrate ; calyx-segments lanceolate or lanceolate- 

 linear, acute, hirsute or hispid-ciliate, slightly or a half shorter than the corolla-tube, which is sparingly 

 hairy within. See page 239. 



6. M. SiBiEiCA, Don. Glauoesoeut, subpubescent or glabrous; calyx-segments oblong or oblong- 

 linear, ciliolate, 2-4 times shorter than the corolla-tube, which is sparingly hairy or nearly glabrous 

 within. — These species are probably not distinct. See page 239. 



(2.) Low ; cauline leaves obtuse or acutish, scarcely veined ; corolla 3 4" long. 



7. M. ALPINA, Don. A span to nearly 1° high, glabrous or hirsute ; leaves spatulate-oblong, lance- 

 olate or the uppermost oblong-ovate, rather smaU and mostly acute, calyx-segments ovate- or oblong- 

 lanceolate and obtusish, or linear-lanceolate and acute, ciliate, a little shorter than the corolla-tube, 

 which equals the limb and is usually hairy within ; anthers inserted in the throat.- Rocky Mountains of 

 Colorado. 



8. M. BKEVISTYLA, S. Watsou. More hirsute ; leaves obtuse, corolla-tube usually shorter than the 

 limb, naked within ; anthers wholly included in the tube ; style very short. — See page 239. 



