16 Contributions from the Gray Herbarium 
leaves, and size of corollas; while the appendages in the corolla- 
throat vary from glabrous to more or less densely long-pubescent. 
The specimens examined all come from adjoining counties in central 
Colorado and it has seemed impossible to correlate any of these 
characters, or to find other concomitant characters. Therefore I 
have come to the conclusion that these apparent differences are 
superficial and possess here no taxonomic value. For instance, the 
collection from Douglas Co., by Mrs. S. B. Walker (cited both 
under the species and the var. myosotifolia), consists of two plants 
mounted on one sheet, one of which is glabrous, the other pubes- 
cent, but otherwise they are as similar as the proverbial peas; and 
I suspect that the “ species ’”’ and the ‘‘ variety ’’ grew on the same 
hillside. Dr. Cockerell, of the University of Colorado, has an 
interesting and plausible theory in regard to this. He writes me, 
‘My present view is that M. secundorum is M. lanceolata plus 
hairs — they very probably are Mendelian opposites and essen- 
a) one species.”’ ! 
M. Cusick Piper, Bull. Torr. Club xxix. 643 (1902). — 
Southeastern Oregon. — Stein’s Mts., “June 18, 1901, Cusick, no. 
258 be, Blhemt Divide, May 3, 1896, Leiberg, no. 2178. 
25. M. ik ta, spec. nov., erecta 2-3 dm. alta a; radice crassa 
fusiformi sublignosa; caulibus vitor agp ina foliis utrinque sub- 
villosis, radicalibus 1.5-2.5 dm. longis, laminis ovatis obtusis basi 
cuneatis 6-12 cm. longis 2.54.5 cm. latis, petiolis 6-12 cm. longis; 
foliis caulinis oblongis vel oblongo-lanceolatis basi attenuatis apice 
obtusis; floribus terminalibus c¢ ongestis, junioribus nutantibus; 
calyce villoso, lobis lanceolatis acutis 4-5 mm. longis; corolla fere 
tubulosa, tubo intus inne sine et nag circa 10 mm. longo 3-3.5 
mm. diametro, limbo 4-5 mm. lato circa 5 mm. longo; corollae 
appendianie villosis: Pondacae et dg? vix inclusis. — Ipano: in 
clumps, ee open ‘slopes, Dry Buck, Boise Co. May 10, 1911, 
Macbride, no. 856 (Tyre, R. Mt. Herb., Coryre, Ging Herb.). 
This species was distributed as M. Cusickii Piper. Then Dr. 
Rydberg expressed the opinion (in a letter) that he would refer it 
to M. amoena A. Nels. (M. Bakeri Greene, var. amoena A. Nels.). 
After a careful examination of the corolla I cannot agree with this 
1 As the present paper was goin ress Professor T. D. A. Cockerell 
kindly informed me of a striking variation Whi which he proposes as M. LAN 
Lata (Pursh) DC., var. aperta iter ar. nov., corolla multo apertiore circa 
ape 
10 mm. diametro, tubo brevissimo: cis lobis tub llae tibus. — 
Boulder, Coloeaas, April 27, 1916, alte Phili pag bese soa gy of Colo.; 
Costes: Gown Whe It seems entirely possible that this is only a terato- 
