CATALOGUE. 161 



Wyethta amplexicaulis, Nutt — Utah. 



Wyethia Arizonica, Gray. — 2-3° high, roughish hirsute ; heads 2-4 ; 

 leaves broadly lanceolate ; upper ones sessile ; lower ones petioled, a foot 

 or more long ; scales of the involucre oblong or lanceolate, cinereous pubes- 

 cent, ciliate; ligules 12, 10-14" long; achenia acutely angled, laterally 

 compressed, 1-2- (or the outer ones often 3-4-) awned. — Willow Spring, 

 Arizona (222). — Plate IX. Branch, natural size. Figure 1. Section 

 through receptacle showing ray-flower and disk -flower in position, the lat- 

 ter subtended by its chaff; somewhat enlarged. 2. Chaff of disk-flower. 

 3. Disk-flower. 4. Style and stigma of disk-flower. 5. Mature achenium 

 of disk-flower. 6. Style and stigma of ray-flower. 7. Mature achenium 

 of ray. Except where otherwise specified, all enlarged about 10 diameters. 



Viguiera* laxa, DC, var. brevipes, Gray (PI. Lindh. 2, 228). — The 

 loosely branching stem herbaceous, strigose-puberulent ; leaves with short 

 petioles, ovate or deltoid, plainly reticulated on the under surface, irregu- 

 larly serrate, scabrous on both surfaces ; petioles villose, especially on the 

 upper surface ; scales of the involucre in two series, lanceolate, pubescent, 

 and nerved on the back, acute ; chaff lanceolate, membranaceous ; recep- 

 tacle convex ; achenia flattened and densely covered with an appressed 

 pubescence. — Camp Bowie, Ariz. (501); also collected by Loew in Central 

 Arizona. 



Viguiera reticulata, Watson (Amer. Naturalist, 7, 301). — "White- 

 tomentose ; stems herbaceous ; leaves subopposite, coriaceous and rigid, 

 broad-ovate, 1-2 inches long, cordate at base, acute, entire, short-petioled, 

 strongly reticulated beneath ; bracts small, lanceolate ; heads 4-5 together, 

 in short close corymbs ; involucral scales imbricated in 3-4 or more series, 

 lanceolate, thick, appressed or the tips spreading ; rays entire ; receptacle 

 shortly conical ; chaff acutish ; achenia silky pubescent, the pappus-awns 

 subulate at base; scales lacerate." — Telescope Mountain, Southeastern Cali- 

 fornia. Will probably also appear in Nevada and Arizona. Not having 

 access to a specimen of this species, I have availed myself of the above 



* Viguiera, H. B. et K. — " Head, flowers, &c. as in Helianilius, but usually of smaller size ; imbricated 

 involucre less herbaceous ; receptacle inclined to be conical ; and, especially the pappus less deciduous 

 or even persistent, consisting of 2 or more scarious chaffy scales on each side between the awns." — 

 Gray, in Fl. Cal. 1, p. 354. 

 11 BOT 



