OF ARTS AND SCIENCES. 141 



often a single prominent calyx-tootli ; stylopodiuni soniewliiit more 

 prominent, and (in the still immatnre fruit) the vittae obscure and seed 

 not grooved beneath the dorsal ones. 



AxGKLiCA TOMKXTOSA. Very stout, hoary-tomentose throughout 

 or the stem glabrous : leaves (piiuate and ])ipiMiiate, the leaflets tiiick, 

 ovate, acute, very ol)li(jue at base, unequally serrate with acntish teeth, 

 the lower sometimes lobed, two to four inches long : umbels naked, 

 often dense ; rays one to three inches long : fruit broad-elliptical (three 

 lines long by two or more broad), the lateral wings thin and the dorsal 

 acutish : seed thin, flat on the face, channelled on the back under the 

 solitary vittaj. — In the Coast Ranges from San Fi-ancisco to Men- 

 docino County ; the only species near the coast. 



Cymopteuus GLOiiOSUS. Nearly acaulescent : leaves clustered 

 upon the very short stem, smooth and glaucous, pinnate or bipinnate 

 with broadly oblong pinnatifid segments, the ultimate divisions oblong, 

 obtuse, entire or toothed : involucre and involucels apparently none, 

 and the rays and pedicels obsolete, the flowers and fruit being in dense 

 globose heads a half to an inch in diameter: flowers white : fruit three 

 to four lines long, the thin flat wings a line broad, narrower at base : 

 vittoe solitary in the intervals, two on the commissure ; seed slightly 

 concave on the face. — Northern Nevada, collected in the valleys near 

 Carson City by Stretch and Watson, and in the Goshoot Mountains by 

 Beckwith. Referred to by Dr. Torrey in Whipple's Report under C. 

 montanus as an abnormal form, and made a variety of the same species 

 in Bot. King's Rep. 124, the fruit of the two having been confounded 

 and the real fruit not examined. 



Peuckdanuh IIallii. * Glabrous, shortly caulescent, the elongated 



* Tlie western Xorth American species of this confused and rather difficult 

 genus form a group usually readily recognizable. They are foinid frequenting 

 hillsides or dry valleys, low-siemmed or acaulescent, with thick fleshy roots, the 

 stems rarely solitary, involucres wanting; stylophore nearly obsolete, and disk 

 not dilated. The following characters may serve to distinguish them. 



§ 1. Leaves not finely dissected (rarely bipinnate), tlie segments large or broad 

 or elongated : flowers yellow : calyx-teeth mostly obsolete : fruit glabrous. 



* Acaulescent, glabrous : fruit oblong to ovate. 



•*- Leaves biternate or ternate-quinate ; leaflets orbicular to lanceolate : involu- 

 cels none. 



1. P. LEiocARPDM, Nutt. Often stout and tall: leaflets thickish, narrowly 

 lanceolate to ovate, acute, 1 or 2 inches long, entire or often few-toothed at the 

 apex : rays usually few, elongated : fruit oblong, narrower below, 4 or 5 lines 



