34 [260] tees of Plants of the Rocky Mountains. 
. and the — of the pollinia Me attenuated and weak. Thus 
engaged and becomes recurved, or even before, the Lap are f= etiag 
topple over and fall upon the phe stigma a * That dila- 
— is the Orchis dilatata of Pursh ssured. wered 
ed 
by Line toa probably quite different species from Unalaschka) should 
be co 
os ne Fats castaneus, Sm.; an alpine form. 
_. 359. Juncus triglumis, L. With the last. 
— 860. Juncus areticus, var. gracilis, Hook. ? Alpine; too young. 
iesii. ex Hook. 
if 
392. Luzula spicata, DC, var., approaching LZ. Peruviana, Alpine, 
— 863. Poa alpina, L.? “ At the foot of the snow banks; July. 
we 364. Munroa squarrosa, Torr. Crypsis, Nutt. Deep sand beds, east 
of Denver. 
¥ 365. Calamagrostis sylvatica, Trin. “Dry bottoms of Clear Creek}, 
uly. 
368. A purple variety of the above {nearly C. purpurascens, R. Br. )» 
in an older state. “ Alpine; August. 
866. Muhlenbergia gracilis, Trin. Calycodon montanum, Nutt. Pl. 
Gamb., ex Thurber. 
Pes Ra Aira cespitosa, var. arctica, Trin. Deschampsia brevifolia, R. Br. 
0 
. Buchlie eo Engelm.; both sexes of the Buffalo-Grass, 
“Phi of the Plat 
. Boutelona profi 
eons Eriocoma cuspidata, NM utt. noe ipa membranacea, Pursh, 
372. Aira cespitosa, L. “ Alpine ridges,” 
_~ 373. Festuca rubra, L, Too young: “alpine ridges,” 
974, PoajosaHenke, °° |? "8% 
375. Poa nemoralis, L., or one of the species referable to 
pine ridges.” 
e from t - have: 
here unusually situated; and I have found an abundance of pollen-t 
duced, before the flower had o pe Yet the arrangements’ f v7 eee val fie 
pollinia by insects are as perfect as in the en rea 
pogo SS ag e pollen-packets fall away at an e sgeales 3 the faite 
: pares ae the usual manner, plant requires, and’ will well seward, a 
