Leptobryum pyriforme, Schimp. Syn. Musc. Eur. 390 (1876). Centennial Valley, August 18, 1895 (No. 1717).

Webera albicans, Schimp. Coroll. 67.

Pole Creek, near Table Mountain, July 1, 1895 (No. 1285). Webera elongata, Schwægr. Spec. Musc. 48.

Centennial Valley; August 18, 1895 (No. 1723 in part). Webera sp.

Specimens sterile, but different from the preceding.

Centennial Valley, August 19, 1895 (No. 1745).

Bryum cæspiticium, L. Sp. Pl. ii, 1121 (1753).

Head of Pole Creek, May 18, 1895 (No. 1211 in part).
Bryum cirrhatum, Hoppe & Hornsch. Fl. 90 (1819). var. ?
Cummins, July 30, 1895 (No. 1538 in part).

Bryum intermedium, Brid. Musc. Recent Suppl. iv, 120.
Centennial Valley, June 8, 1895 (No. 1263).
Bryum pseudotriquetrum, Schwægr. Suppl. i, 2, 110.
Centennial Valley, June 8, 1895 (No. 1259).

Mnium subglobosum, Bruch. & Schimp. Bryol. Eur. t, 388.
Centennial Valley, August 19, 1895 (No. 1744).
Timmia Austriaca, Hedw. Sp. Musc. 176, t. 42 (1801).
Laramie Peak, August 8, 1895 (No. 1645).

Polytrichum juniperinum alpinum, Schimp. Syn. 447.
La Plata Mines, August 24, 1895 (No. 1830).

Polytrichum piliferum, Schreb. Spicil. Fl. Lips. 74.
La Plata mines, August 21, 1895 (No. 1769).
Climacium Americanum, Brid. Musc. Recent Suppl. ii, 45.
Centennial Valley, August 19, 1895 (No. 1724).

Pseudoleskea oliogoclada, Vindb.

Centennial Valley, August 18, 1895 (No. 1734).

Thuidium Blandovii, Bruch. & Schimp. Bryol. Eur. t. 486. Centennial Valley, August 19, 1895 (No. 1746 in part). Brachythecium acutum, Sulliv. Icon Musc. Suppl. 99, t. 75. Centennial Valley, August 17, 1895 (No. 1698).

Brachythecium rivulare, Bruch & Schimp. Bryol. Eur. t. 543.
Laramie Peak, August 7, 1895 (No. 1622).

Hypnum commutatum, Hedw. Musc. Frond. iv, 68, t. 24.
Gros Ventre River, August 16, 1894 (No. 1088).

Hypnum plicatile, Lesq. & James. Man. Moss. N. A. 394.
Cummins, July 29, 1895 (No. 1507).

MARCHANTIACEÆ.

Marchantia polymorpha, L.

Frequent on wet banks; Green River, August 25, 1894 (No. 1005). Centennial Valley, August 18, 1895 (No. 1748).

ALGE.

Among Diatom

The Algæ have received no attention so far as specific determination is concerned. In the collection of material for class use in the laboratory it has been found that quite a large number of genera are represented, some of them by a number of species. these Spirogyra, Zygnema and Vaucheria may be named. acea are everywhere but the Desmidiacea are not so well represented. Among the larger forms the two following are conspicuous in the ponds at the city springs :

Chara fœtida, A. Br.

It forms a dense growth over the bottom of the ponds, in places reaching a foot or more in height.

Batrachospermum gelatinosum, (L.) A. F. Woods, Rep. Bot. Surv. Neb. iii, 6 (1894).

Adherent to stones in running water.

Chara sp.

A rather unusual Chara was collected in a pool in the mouth of an extinct geyser pan on Warm Spring Creek. It is in the hands of Mr. J. W. Blankinship for determination; August 9, 1894 (No. 796).

FUNGI.

The following Fungi have been determined by Mr. J. B. Ellis. They include only incidental "pickups" in the field. Those of economic importance that we have had to deal with on the Experiment Farm are not included.

Acidium abundans, Pk.

Cummins, July 29, 1895 (No. 1498). On Symphoricarpos eriophilus.

Ecidium monoicum, Pk.

Laramie Hills, May 23, 1894 (No. 50). On Sisymbrium linifolium. Æcidium Enothera, Mont.

Pole Creek, June 2, 1894 (No. 133). On Enothera brachycarpa. Uromyces Junci, (Schw.) Tul.

Laramie, December, 1895 (No. 1207). On Juncus sp.

Erysiphe cichoracearum, DC.

Cummins, July 29, 1895 (No. 1516). On Hydrophyllum occidentale.

Melampsora farinosa, (Pers ) Schroet.

Cummins, July 29, 1895 (No. 1520); Centennial Valley, August 25, 1895 (No. 1864). Frequent on various Willows. Phragmidium subcorticum, Schrank,

Cummins July 29, 1895 (No. 1499). On Rosa blanda (?). Ramularia sidalcea, E. & E.

Cummins, July 29, 1895 (No. 1468). On Sidalcea candida. Mr. Ellis writes of this as follows; "I have seen it but once before. It was from British Columbia, sent by Dr. Macoun."

LICHENES.

The following are a few of our commoner Lichens: Claydonia pyxidata, Fr.

Centennial Valley, August 18, 1895 (No.

Centennial Hills, August 17, 1895 (No. 1699).
Pole Creek, July 1, 1895 (No. 1387).
Laramie, July 23, 1895 (No. 1429).
Laramie Peak, August 8, 1895 (No. 1644).
Cummins, July 29, 1895 (No. 1508).

1749).
Evernia vulpina, Ack.
Parmelia conspersa, Ehrh.
Parmelia molliuscula, Ack.
Peltigera aphthosa, Hoffm.
Peltigera canina, Hoffm.
Rinodina turfacea, Korb.
1713).

Centennial Hills, August 17, 1895 (No.

Appendix to List of Species.

*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.