386 COMPOSITE. 



mit. Perennial and some of them apparently biennial or annual herbs, all of the 

 Caliibrniaii Sierra Nevada, glandular-pubescent, and some also woolly ; with alter- 

 nate pinnately lobed or toothed leaves, and large heads of yellow flowers, or the 

 rays in one species purple. 



An interesting genus, dedicated to the discoverer of the first species, the late Dr. G. "W. Hulse, 

 formerly of Louisiana, who made some collections in California. 



* Stems elongated and bearing several racemose or* corymbose heads : scales of the 



involucre linear and acuminate. 



1. H. Calif ornica, Torr. & Gray. Tall, viscid-pubescent : heads 3 to 7 on an 

 apparently naked stem or peduncle, subtended by ovate lanceolate bracts (half an 

 inch long) : rays yellow : scales of the pappus rounded-cuneate, the truncate apex 

 denticulate. Bot. Mex. Bound. 98. 



Mountains east of San Diego, in bushy places, Parry. Base of stem and leaves still unknown. 

 Rays half an inch long, furnished with sterile filaments. Akenes a quarter of an inch long. 



2. H. heterochroma, Gray. Two feet high or more, viscid-pubescent, leafy to 

 the top : leaves oblong, thin, coarsely and sharply toothed ; the uppermost subtend- 

 ing the 4 or 5 racemose heads ovate and partly clasping ; lowest narrowed to the 

 sessile base : corollas hirsute : rays very numerous, purple : scales of the pappus 

 erose-denticulate, two of them oblong, the alternate two much shorter. Proc. Am. 

 Acad. vii. 369. 



Yosemite Valley, on granite debris, Bolander. Involucre fully half an inch high. Rays 40 or 

 50 ; the small ligule only 2 or 3 lines long, sparsely hirsute : tubes of all the corollas very hir- 

 sute ; those of the disk apparently tipped with purple when old. Akenes 3^ lines long. 



* * Stems or branches leafy and terminated by a solitary head. 



3. H. brevifolia, Gray, 1. c. A foot high, glandular-pubescent : stem simple 

 or with slender simple branches : leaves narrowly oblong or the lower spatulate, 

 repand-toothed, obtuse, sessile : head rather small and narrow : scales of the invo- 

 lucre linear, barely in two series: rays only 10 or 12, light yellow : scales of the 

 pappus nearly entire, oblong, the alternate ones rather shorter. 



In the Mariposa Sequoia grove, Bolander. Leaves an inch and a half or less in length. Invo- 

 lucre half an inch high. Rays 3 or 4 lines long. Akenes 3 or 4 lines long. The habit of the 

 plant is more like that of the foregoing species ; but the stem or branches with only terminal 

 heads. 



4. H. algida, Gray. A span to a foot high, glandular-pubescent, and when 

 young more or less villous or woolly : stem stout and simple (or several from a 

 thickish rootstock or root), very leafy below : leaves ligulate or linear-spatulate, 

 coarsely toothed or incisely almost pinnatifid, sessile ;' the lower crowded and with 

 entire scarious spathaceous bases partly sheathing the base of the stem ; the upper 

 sparser and gradually reduced to linear bracts : head large and broad : involucre 

 woolly, its linear-attenuate scales numerous in at least 3 series, loose : rays 50 to 60, 

 yellow : pappus of very broad and short strongly fimbriate-lacerate scales. Proc. 

 Am. Acad. vi. 547. 



High Sierra Nevada, on rocks, &c., at and above 10,000 feet ; Mount Dana and Wood's Peak, 

 Brewer, Bolander. Mount Lyell, J. Muir. Above Sierra Valley, Lcmmon. Lowest leaves 3 to 

 6 inches long, a quarter to half an inch wide. Heads almost an inch high, with rays half an 

 inch long. Akenes 3 lines long : pappus not longer than the hairs of the akene, the scales some- 

 times concreted. Plant, according to Dr. Bolander, " very odoriferous with the copious balsamic 

 secretion." 



* * * Stems depressed or largely subterranean (in volcanic scoria), leafy at summit, 



terminated by a solitary head : peduncle sometimes scape-like. 



5. H. nana, Gray. Glandular-pubescent : leaves pinnatifid or incised, and 

 with a rather long margined petiole : peduncle an inch or two long : scales of the 



