5° BOTANICAL GAZETTE [JANUARY 
and short filaments: style deeply cleft, the branches straight and with 
the entire dorsal surface stigmatic; immature achene 2™™ long, obo- 
void, finely pubescent. 
Rather rare on the summit of Mt. Pinos, Ventura county, California, July 
1g02. Type specimen, no. 4145, in Herb. Stanford University. 
This beautiful deep blue or purple-flowered Machaeranthera, like many other 
purely alpine — has the habit of apparently forcing its growth along crevices 
of rocky summits 
Chi yndthanieie corymbosus, n. sp.—Shrubby, o.5-1™ high, 
numerously branched, forming well rounded bushes; wood dry, soft, 
yellowish, with thin shredded bark : leaves on second year old branches 
of varying lengths, much shorter than on younger twigs, usually fas- 
cicled, soft pubescent on both sides, dry and becoming recurved; 
those on the upper branches mostly of the same length, 1o—15°™ 
long, ascending, not fascicled, narrowly linear or oblanceolate, with 
a short sparse pubescence, the surface more or less glandular, obscurely 
punctiform: heads glomerated in rounded corymbs, 2—3°™ across, at 
ends of branches: peduncles 6™™ long or longer, they as well as the 
subtending bracts sparsely lanate pubescent, usually monocephalous: 
involucral bracts persistent, broad and mainly in two imbricate 
series; lower ones triangular, short and pubescent; upper ones 5™™ 
long, nearly glabrous and almost shining, broadly linear-obtuse, with 
narrow hyaline margins: heads about 7™™ high, cylindric or sub- 
turbinate, 1o-flowered: ray flowers few, 8™™ long including the 
ciliate pubescent achene 2™™ long: pappus uniserial, 3™™ long, 
finely scabrous, whitish and copious: tubular part of the corolla 
shorter than the expanded portion, pubescent; ligule broadly elliptic, 
yellow, thin, apex much folding over, bluntly toothed: style cleft: 
corolla of fertile disk flowers tubular, 5™™ long, 5-segmented: fila- 
ments 3™™ long; anthers 2™™ long, linear, with triangularly con- 
stricted apices. 
Near Lancaster, Los —_ ety, California, June r902. Type specimen, 
part ofthe day this deser-loving plant = 
