424 BOTANICAL GAZETTE [DECEMBER 
in swamps; Calamagrostis purpurascens follows the creeks throughout 
the spruce zone on Long’s Peak and the region of Clear Creek Canyon; 
C. canadensis acuminata is only exceptionally alpine, and thrives best 
in the swamps of the aspen zone; Deschampsia caespitosa is most 
frequent and typically developed in the swamps of the aspen zone, 
TABLE I 
ses 
n J P 
S)2l/¢lglalal3l® 
Alpine Gramineae from Colorado Ste L® ei) ee ee 
- ~|/B8)/2/R |/Al/ 4] eige 
EI BP Roh st os a ee 
A{/S/e 1S) a] a] o |e 
eee eerenns Fe es mi ate ee : “ 
Agcosbs varians Trin. ....;............... op + ae, BE oe os 
Dee WO GS res HEE, Pees . a 
Calamagrostis purpurascens R. Br......... aa ee ie Bp = 
C. canadensis acuminata Vas.............. = Noa Se oh, ce 
hampsia caespitosa Beauv............ + “4G 2 e 
Trisetum subspicatum Beauv.............. > +} + fe : 
Avena Mortoniana Scribn................. + Sets cay (i s re 
Poa rupicola (Vas.) Nash................. P Bie Ee Ee ‘ 
Be MRE il cs = ge ee 3. 
~ ee Wee ee fee es + : 
P. Fendleriana (Stend.).......--........., oe ae - 
me Sib ELT 
wa eoremanting Vas... 233... Coe. Gh ee ee . 
Festuca ovina L...... Se ee Mie hue ks +i+ +p} + A 
¥. ovina supina Hack... .o65.... - wn ale ge e 
Agropyrum violaceum Lge................ Ree San gs ar -* 
A. Scribneri Vas........ es +] + +].. © ee 
* A + indicates the presence of the species, dots its absence. 
but it is also very common near the snowbanks at high elevations; 
Trisetum subs picatum does not descend much farther than pac’ the 
timberline; Poa rupicola descends to the aspen zone on James F 
and near Central City, but only seldom; Festuca ovina was ae 
in the aspen zone near Central City, and in the spruce zone on *"" 
Massive and Long’s Peak. : 
The distribution of these alpine species on the Pacific and Atlantic 
coasts is shown in Table II. : 
It will be seen from this list that of the 20 alpine species from 
Colorado 13 occur also on the Pacific coast, and 7 on the Atlantic, 
where they are either alpine or arctic, with the exception of Des _ 
sia calycina, Only 9 of these occur also in the Old World. Table 
