*Arabis Drummondii, Gray, Proc. Am. Acad. vi, 187. On fertile hillsides in the mountains; not frequent. Union Pass, August 10, 1894 (No. 875); Centennial Hills, June 7, 1895 (No. 1248).

Arabis hirsuta, (L.) Scop. Fl. Carn. Ed. 2, ii, 30 (1772),

In sandy valleys, sometimes among the sage brush; frequent. Laramie Hills, June 7, 1894 (No. 181); Union Pass, August 13, 1894 (No. 1074); Pole Creek, July 1, 1895 (No. 1394).

Arabis Holbollii, Hornem. Fl. Dan. t. 1879 (1827).

On a dry, stony sandbar of the Laramie River, Cummins, July 30, 1895 (No. 1551).

Arabis Holbollii Fendleri, Wats. Syn. Fl. i, 164 (1895).

Noted only in the sand beds of the stony foothills of the Laramie range; May 16, 1894 (No. 32).

Arabis Lemmoni, Wats. Proc. Am. Acad. xxii, 467 (1887).
Among the sage brush on the plains; infrequent.

Laramie, May, 23, 1894 (No. 56).

Arabis Lyalli, Watson, Proc. Am. Acad. xi, 122.

Alpine; Teton Mountains, August 21, 1894 (No. 1007).

Arabis Nuttallii, Robinson, Syn. Fl. i, 160 (1895).

In valleys but on dry ground.

Horse Creek, June 9, 1894 (No. 218); Pole Creek, June 28, 1895 (No. 1359).

Arabis perfoliata, Lam. Encycl. i, 219 (1788).

Rare; noted but once; Laramie Peak, August 7, 1895 (No. 1628).

Thelypodium integrifolium, Endl. in Walp. Rep. i, 172 (1842).
Very frequent, especially on saline plains.

Lusk, July 21, 1894 (No. 574); Dubois, August 9, 1894 (No. 747); Laramie, August 10, 1895 (No. 1663).

* Determinations in this genus by Dr. B. L. Robinson.

Thelypodium sagittatum, Endl. 1. c.

Widely distributed, but only scattering plants.

Wheatland, June 18, 1891; Pole Creek, June 2, 1894 (No. 112); Bacon Creek, August 15, 1894 (No. 922). Sisymbrium virgatum, Nutt. in T. & G. Fl. i, 93.

On sandy ground among the sage brush.

Laramie Plains, June 9, 1895 (No. 1299).

Draba nemorosa, L. Sp. Pl. 643 (1753).

Frequent in wet loam soil in valleys; variable, some of our specimens are the variety hebecarpa, Lindb.

Pole Creek, June 2, 1894 (No. 153); Union Pass, August 11, 1894 (No. 854); Centennial Valley, June 9, 1895 (No. 1254); at other times and places.

Arenaria Nuttallii, Pax in Engler, Jahresb. xviii, 30.

Infrequent; noted only at Garfield Peak, July 29, 1894 (No. 675). Astragalus bodini, Sheld.

Very abundant in meadow lands in the Centennial Valley; August 25, 1895 (No. 1855).

Astragalus leucopis, Torr. Mex. Bound. Surv. 56, t. 16.

Rare; specimens from the eastern part of the state by B. C. Buffum in 1892.

Astragalus Parryi, Gray, Am. Journ. Sci. ii, 33.

Frequent on gravelly hillsides; Pole Creek, June 2, 1894 (No. 101); Centennial Valley, June 9, 1895 (No. 1298).

CORRECTIONS:

On page 63, line 3 from bottom, read Engelmann's Spruce for Douglas Spruce.

In the Astragali some of the names as given in the list of Pteridophyta and Spermaphyta, which it was intended to give as synonyms, were inadvertently omitted.

The succeeding list includes the new species, varieties and names

Androsace septentrionalis subumbellata, n. var...

Mertensia lanceolata viridis, n. var...

149

158

The following have recently been published as new from this state :

Chrysothamnus collinus, Greene, Pitt. iii, part 13, 24 (1896).

122

Chrysothamnus linifolius, Greene, 1. c..

123

Allocarya Nelsonii, Greene..

156

Eriogonum subalpinum, Greene, Pitt. iii, part 13, 18 (1896)..

174

In the succeeding lists such plants are given as have been reported by others from this state but are as yet unrepresented in our herbarium. It is intended to exclude all names that are merely synonyms of those of our own list, but even with greatest care I fear some will get in. Some, while not synonyms, are names of plants that very doubtfully belong to this region at all. On the other hand these lists, undoubtedly, do not represent all that have been reported from this state, but are intended to be complete with respect to the literature at hand. Such references as could not somewhat satisfactorily be verified are excluded, probably too many.

FROM TORREY'S REPORT ON THE PLANTS OF FREMONT'S EXPEDITION, 1842.

Astragalus tridactylicus, Gray, as Phaca digitata, Torr. Little Sandy, August 8.

Potentilla Pennsylvanica glabrata, Watson, as P. sericea glabrata, Lehm. Sweetwater River, August 4-15.

Sedum rhodiola, DC. Wind River Mountains, August 12-17.

Symphoricarpos vulgaris, Michx. Wind River Mountains, August 13-14. Aster Novæ-Angliæ, L. Wind River Mountains, August 18.

Aster andinus, Nutt. Wind River Mountains, August 16.

Erigeron salsuginosus glacialis, Gray, as Aster glacialis, Nutt. Wind River Mountains, August 16.

Solidago nemoralis incana, Gray, as S. incana, T. & G. Sweetwater River.

Helianthus petiolaris, Nutt. Laramie Hills, July 26.

Helianthus Maximiliana, Schrader. Laramie Hills, July 26.

Hymenopappus corymbosus, T. & G. Upper Platte, August 26.

Vaccinum myrtilloides, Hook. Wind River Mountains, August 15.

Dodecatheon Meadia latilobum, Gray, as D. dentatum, Hook., Wind

River Mountains, August 13-16.

Phlox muscoides, Nutt. Wind River Mountains, August 15.

Gentiana arctophila, Griseb. Sweetwater River, August 4.

Gentiana linearis, Frol. as G. pneumonanthe, L. Laramie River, July 12.

Habenaria leucophæa, Gray, as Plantanthera leucophæa, Lindl. Lara

mie (Black) Hills, July 27.

Spiranthes cernua, Rich. Sweetwater River, August 6.

FROM COULTER'S REPORT ON THE BOTANY OF THE HAYDEN SURVEY, 1872.

Clematis alpina occidentalis, Gray, Teton Mountains, July.

Ranunculus Nelsonii, Gray, Yellowstone Lake.

Aquilegia flavescens, Wats. Yellowstone Lake, August.

Delphinium Menziesii, DC. Teton Mountains, July.

Aconitum Fischeri, Wats. as A. nasutum, Hook. Yellowstone Lake,

August.

Nuphar advena, Ait. Yellowstone Park, August.

Dicentra uniflora, Kellogg. Teton Mountains, August.

Cardamine oligosperma, Nutt. Teton Mountains, July.

Draba aurea, Vahl. Teton Mountains, July.

Draba nivalis, Lilj. as D. Stellata, Jacq. Teton Mountains, July.

Lychnis Drummondii, Wats. Yellowstone Park, July.

Arenaria pungens, Nutt. Teton Mountains, July.

Arenaria verna, L. Teton Mountains, July.

Arenaria laterifolia, L. Teton Mountains, July.

Sagina Linnæi, Presl. Yellowstone Park, August.
Claytonia linearis, Hook. Clark's Fork, August.
Spraguea umbellata, Torr. Yellowstone Park, August.
Dryas octopetala, L. Teton Mountains, July.

Ivesia Gordoni, Gray, Teton Mountains, July.

Saxifraga oppositifolia, L. Teton Mountains, July.

Tellima parviflora, Hook. Teton Canon, Wyo. (?), July.
Heuchera cylindrica, Dougl. Yellowstone Park, August.
Ribes bracteosum. Dougl. Teton Canon, Wyo. (?) August.
Sedum rhodiola, DC. Teton Mountains, July.

Linnæa borealis, Gronov. Yellowstone Park, August.
Townsendia scapigera Eaton, Teton Mountains, July (?).

Solidago serotina, Ait. as S. gigantea, Ait. Yellowstone Park, August (?).
Rudbeckia occidentalis, Nutt. Teton Mountains, July.

Crepis Andersoni, Gray, Yellowstone Park, August.

Crepis nana, Richards, Teton Mountains, July.