CATALOGUE. I79 



Amida hiesuta, Nutt. Hirsute with both short appressed and long 

 spreading hairs, as well as more or less beset with stalked glands ; stem 

 10-18' high, leafy; leaves about 2' long, 1-2" broad; heads somewhat 

 corymbed at the top of the stem.— Said to be a stouter plant than A. gracilis, 

 and with broader and more carinate involucral scales, but there is probably 

 but one species, and that should properly be reduced to Madia, where Hooker 

 originally put it. Saskatchewan to Oregon and Colorado, (Parry in 1864, 

 and 364 Vasey.) Parley's Park in theWahsatch; 6,000 feet elevation; 

 July. (626.) 



Maeuta Cotula, DC. A European weed, now naturalized throughout 

 the United States ; also in Canada and parts of South America. Eoadsides 

 in Central Nevada; 5,000 feet elevation. (627.) 



Achillea Millefolium, L. Throughout North America, Europe, and 

 Northern Asia ; Mount Davidson, (Bloomer!) Truckee Valley, and on the 

 Havallah, East Humboldt, and Clover Mountains, Nevada, from the base to 

 the peaks, and common in the Wahsatch and Uintas; 4-10,000 feet alti- 

 tude. (628.) 



Var. EOSEA, T. & G., was found along stream-banks in and near Parley's 

 Park, Utah, but was not seen in Nevada. (629.) 



Mateicaeia discoidea, DC. California to Alaska and Eastern Asia. 

 Naturalized near St. Louis, and introduced into Europe. Foot-hills of the 

 Trinity Mountains, Nevada, and in Jordan Valley, Utah ; May. Prof Brewer 

 states that this is a great remedy for fever and ague with the native Cali- 

 fornians. (630.) 



Tanacetum candm. Suifruticose, minutely tomentose-canescent; stems 

 8-10' high, branched below, leafy to the top ; leaves 6-12" long, l-lj" wide, 

 sessile, linear-obovate, simple or 3-cleft at the apex ; heads congested in 

 small terminal corymbs, sub-globose ; involucre cup-shaped, of about 12 oval 

 or ovate scarious-margined concave scales in two rows; receptacle conical ; 

 florets about 100, all apparently fertile (T) ; 4-8 of the outer ones pistillate 

 only, and with the truncated corolla contracted and pubescent at the top, the 



' amida, Ndtt. Heads 2-6-flo-wered ; rays often none, but sometimes one or two, pistillate and 

 fertile, with a Tery small cuneate S-lobed corolla ; tlie other flowers tiihular, perfect and fertile ; corolla 

 slightly expanded upwards, pubescent, 5-toothed. Involucre ohovate-oblong, few-hracted, the scales 

 concave, carinate, as many as the flowers, and each enclosing an aoheuium. Eeceptacle small, naked. 

 Achenia ohlong-ohovate, incurved, compressed, slightly angled on the sides, smooth and black, without 

 pappus. — Slender hirsute annuals of Western North America, with the habit and most of the charac- 

 ters of Madia; leaves sessile, linear, entire; heads in small terminal or axillary clusters. 



