84 Trans. Acad, Sci. of St. Louis, 



The figure of the ament does not accord with the description^ 

 being neither sessile, dense, nor oblong-cjlindric. It is, how- 

 ever, in the numerous specimens from the Rocky Mts. that the 

 greatest variation is found. To facilitate comparison the 

 characters of both are given below in parallel columns. 



S. chlorophylla (Rocky Mt8.). S. phylicifolia (Europe). 



Mature leaves rarely more than Mature leaves often three inches 



two inches long, usually shorter, or more in length, constantly and 



mostly narrowed at both ends, entire prominently crenate-serrulate, most- 



or rarely slightly crenulate, shining ly dull green above, obovate or ob- 



above; aments sessile or the fertile lanceolate, obtuse or acute; aments 



on very short peduncles, bractless or pedunculate, leafy -bracteate, ob-^ 



with a few small bracts, very dense, lanceolate, or cylindrical, elongated, 



thick, subglobose to oblong cylin- becoming loose in fruit, 1-2 in. long; 



drical, not becoming loose in fruit, peduncles i-i in. long; capsules 



l-U in. long, i-| in. wide; capsules 4-5 lines long, conic -rostrate. 



Though the stigmas of S. chlorophylla are usually noted as 

 entire, they are either notched or bifid in some Rocky Mt. 

 specimens. This species is found also in the Cascade and 

 Wahsatch Mts. and may be sought in the Sierra Nevada and 

 other coastward mountains. 



I think that for the present it will be well to retain the 

 name S. chlorophylla for the western mountain form. It is 

 certainly suflSciently distinct to rank as a good variety — per- 

 haps as a separate species. 



Specimens examined. —Baker, Earle, and Tracy, 586, PI. So. Colo. 

 1898. — Crandall, Fl. Colo., West of Cameron Pass, July 5, 1894. — Engel- 

 mann, Rocky Mt. Fl., Below Berthoud's Pass, Colo. Aug. 10, 1874, No. 5, 

 Berthoud's Pass, Colo. 1881. — Hayden, Raynold's Exped., Wind. R. Mts.> 

 June 1, 1860. — Nelson, 2 (?2P,Fl.Wyo. 1894, 2 74i, Flo. Wyo. 1895; 2081, 

 Fl. Wyo., S. phylicifolia, 1896. — Pammel, 217, PI. No. Colo. 1896; 21 8, 

 220, PI. Wyo. 1897. —Parry, 344, Rocky Mt. Fl., S. discolor, 1861; 6, Colo. 

 1864. — Reppert, F., 2, Berthoude's Pass, Colo. 1898. 



S. MONICA, Bebb. 



S. Monica Bebb, Bot. Calif. 2 : 90. 1880. —Bebb, Bot. Gaz. 16 : 107. 1891. 



This very obscure and doubtful species would seem either 

 to have a restricted range in the higher mountains of Califor- 

 nia or to be only a form of S. chlorophylla. Mr. Bebb sug- 

 gested the latter possibility in his later paper, though he had 

 seen no other material than the ** poor stunted, battered 

 specimens " on which he had founded the species. After ex- 



