CATALOGUE. 181 



about 25-flowerccl, sessile or on very short pedicels, and not higher than 

 the topmost leaf, campanulate ; scales of the involucre acute, faintly 

 ciliolate, slightly mucronate, the inner ones much longer, the outer ovate; 

 achenia gland ular-puberulent. — Arizona. 



Ckepis glauca, T. & G Fruit needed to decide, but probably this. — 

 Willow Spring, Arizona (218). 



Crepis runcinata, T. & G — San Luis Valley, Colorado (664). 



Crepis occidentalis, Nutt., var. gracilis, Eaton. — Nevada and Utah. 



Crepis acuminata, Nutt. — Nevada. 



Malacothrix Fendleri, Gray (PL Wright. 2, p. 104). — "Dwarf, 

 glabrous; stems many, diffuse, from a delicate root; younger leaves spar- 

 ingly arachnoid, radical runcinate-pinnatifid dentate or the lobes cuspidate 

 mucronate, the cauline few, linear, the highest entire; achenia almost 

 cylindrical. Many-ribbed [15-ribbed]; the apex manifestly cupulate, 

 the cupule entire; pappus of a single persistent bristle, with a few smaller 

 caducous ones." I have not the specimen in my collection. — Bowlder, 

 Colo. (466). 



Malacothrix sonchoides, T. & G — Similar to the above, except that 

 "the entire pappus is deciduous in a ring", the summit of the achenia is not 

 contracted, and of the 15 ribs some are stronger than the others, and the 

 crown-like border of the akene is 15-denticulate. — Nevada and Utah. 



Tkoximon aurantiacum, Hook., var. Parryi, Gray. (Macrorhyncus 

 troximoides, T. & G.) — Colorado (66, 668), Nevada, and Utah. Including 

 here as a mere form (so considered by Dr. Gray), Troximon parviflorum, 

 Nutt,, from South Park, Colorado (665, 666). 



Pyrriiopappus Rothkockii, Gray (Proc. Amer. Acad, xi, p. 80). — Slender; 

 over a foot high, from a fusiform root, simple or leafy and branching below ; 

 one-few-headed; linear leaves entire or toward the base somewhat fringed- 

 pinnatilid or dentate; peduncle slender, almost naked ; head narrow, about 

 20-flowered ; the few exterior scales of the involucre subulate, appressed; 

 achenia rugulose, above scabrous ; mature pappus dirty white. — Fisch's 

 Ranch, Southern Arizona, at 5,000 feet altitude (699).— Plate XIV. Nat- 

 ural size. 1. Flower, enlarged about 5 diameters 2. Style and stigma, 

 about 15 diameters. .'!. Young head closed, about 4 diameters. 4 Ache- 



